RU2660524C1 - Absorbent article having slots whose positions are different for the front waist portion and the rear waist portion - Google Patents

Abstract

FIELD: hygiene.

SUBSTANCE: invention relates to absorbent sanitary products. Absorbent article includes front and back exterior parts disposed along the transverse direction, and a side end portion of the front outer part connected to the lateral end portion of the rear outer part. Each of the front and back exterior parts includes a sheet that does not respond to contact with the user's skin, located not on the side in contact with the user's skin, a contactable sheet with the user's skin located on the side in contact with the wearer's skin and an elastic thread located between said sheets, which have a plurality of linear slots formed in a row. Rear slots are not in the vertical position, in which the front slots are formed in a row. Front slits are not in an upright position, in which the rear slots are formed in a row.

EFFECT: increase strength of the material and reduce the humidity and temperature inside the absorbent article.

9 cl, 14 dwg

Description

FIELD OF TECHNOLOGY

[0001]

The present invention relates to absorbent articles.

BACKGROUND

[0002]

Absorbent articles, such as disposable diapers, are made as a combination of the body of the outer layer and the absorbent body. The body of the outer layer usually consists of a layered product with an inner outer part and an outer outer part. For such absorbent products, users require a quality fit similar to underwear. While ordinary disposable diapers were made of paper or fabric, super absorbent polymer, non-woven material, etc .; their effectiveness in meeting this requirement is now far superior to fabric diapers.

[0003]

Non-woven material has the following advantages: if the non-woven material is made by random bonding, its strength and stretching are not unidirectional; suitable for mass production and inexpensive; easily combined with many materials; their thickness and the intervals between them are easy to change; etc. But non-woven material has several drawbacks: its strength is less than woven fabric; and it is impenetrable. To overcome such shortcomings, the following measures are often taken: increasing the thickness of the material itself in order to increase the strength of the material of the absorbent pad made of non-woven material; or overlaying one on another of a plurality of sheets of material in the thickness direction. However, in an absorbent article whose material strength is improved as mentioned above, air permeability is reduced. Conversely, in order to increase the breathability of the absorbent article, if one or more slots are formed in the lateral direction, the strength of the material of the absorbent article is reduced. That is, breathability counteracts the strength of the material.

[0004]

From this point of view, it is desirable that the absorbent article has slots formed on the surface of the absorbent article to allow air to flow through the slots, and thereby increase the strength of the material, while trying to reduce the humidity and temperature inside the absorbent article.

[0005]

For example, in PTL 1, a diaper 10, which is worn without fasteners, is described in which grooved portions 38 are formed. As shown in FIG. 13, a diaper 10 put on without fasteners is formed using an outer body 11 consisting of a front portion 21 and a rear portion 23. The outer body 11 is formed with: an outer laminate 33 (first sheet material) a surface side not in contact with the skin; and an inner laminate 31 (second sheet material) a surface side in contact with the skin, which are layered and bonded together. The outer laminate 33 and the inner laminate 31 are made of non-woven material and the like. The outer laminate 33 partially has a plurality of side elongated groove portions 38 that are each formed in the width direction (X direction) of the diaper 10 worn without fasteners. A plurality of groove portions 38 located in the height direction (Y direction) comprise the groove region 71. The groove portions 38 each is formed as narrow in the transverse direction, long cut in the first sheet material serving as the outer laminate 33.

LIST OF LINKS

Patent Literature

[0006]

[PTL 1] Japanese Patent Application Publication No. 2014-221122

SUMMARY OF THE INVENTION

Technical challenge

[0007]

However, in the diaper 10 of PTL 1 that is fastened without fasteners, the vertical positions (positions in the Y direction) in which the slots 38 are formed in the front 21 correspond to the vertical positions in which the slots 38 are formed in the rear 23. Accordingly, as seen from the side through the waistband part, in the positions in which the slots 38 are formed in the front part 21, there are also slots 38 in the rear part 23. In some vertical positions, the number of sheets of material is less than sheets of material in other vertical positions. This can lead to the rupture of the absorbent product by the force applied to the lateral rupture of the absorbent product, the force is generated, in particular, when the user pulls the absorbent product with both hands.

The solution of the problem

[0008]

In order to solve the above problem, an aspect of the present invention relates to an absorbent article including a front outer part and a rear outer part, each of which has slots formed thereon, vertical positions of the slots are different for the front outer part and the rear outer part.

[0009]

In other words, the main aspect of the present invention to achieve the above aspect is an absorbent article having a vertical direction, a transverse direction and a thickness direction that are perpendicular to each other,

an absorbent article including.

front outer part, which is located along the transverse direction; and

rear outer part, which is located along the transverse direction,

front outer part and rear outer part each include:

a sheet that is not amenable to contact with the skin of the user;

contactable skin sheet; and

an elastic thread existing between the sheet not amenable to contact interaction with the skin of the user and the sheet susceptible to contact interaction with the skin of the user,

at least the non-contactable sheet of the skin of the user of the front outer part has a plurality of linear front slots formed in a row,

at least a sheet that is not amenable to contact with the skin of the user, the rear outer part has many linear rear slots formed in a row,

the rear slots are absent in a vertical position in which the front slots are formed in a row,

the front slots are absent in a vertical position in which the rear slots are formed in a row.

Beneficial effects of the invention

[0010]

According to the absorbent article of the present invention, the possibility of rupture of the absorbent article can be reduced.

[0011]

Other tasks and their solutions, which are disclosed herein, will be apparent from the following description of embodiments and accompanying drawings and the like.

BRIEF DESCRIPTION OF THE DRAWINGS

[0012]

FIG. 1 is a perspective view of an absorbent article 100, such as a three-piece disposable diaper, in accordance with the present invention.

FIG. 2 is a schematic plan view of an absorbent article 100 in an unfolded state when viewed from the side of a user's skin.

FIG. 3A is a cross-section along the axis AA or CC of FIG. 2.

FIG. 3B is a cross-section along axis BB of FIG. 3.

FIG. 4 is a cross section along axis VI-VI of FIG. 2.

FIG. 5 shows the relative position of the elastic parts 140 and the slots 150 of the front outer part 104 and the elastic parts 140 and the slots 150 of the rear outer part 106.

FIG. 6 shows another example of the manner in which slots 150 are formed in the front outer part 104 and the rear outer part 106.

FIG. 7 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 8 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 9 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 10 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 11 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 12 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

FIG. 13 is a perspective view of a prior art diaper 10 worn without fasteners.

DESCRIPTION OF EMBODIMENTS

[0013]

Although the present invention is subject to various modifications and alternatives, specific embodiments thereof are shown by way of example in the drawings and are described in detail herein. You must understand, however, that the description in this document of these specific embodiments is not intended to limit the invention to the particular forms disclosed, but rather the invention encompasses all modifications, equivalents, and alternatives that fall within the spirit and scope of the present invention as defined by the appended claims.

[0014]

At least the following aspects will be understood in the present description with reference to the accompanying drawings.

[0015]

An absorbent article having a vertical direction, a transverse direction and a thickness direction that are perpendicular to each other,

an absorbent product, including:

front outer part, which is located along the transverse direction; and

rear outer part, which is located along the transverse direction,

a lateral end portion of a front outer part connected to a lateral end portion of a rear outer part,

front outer part and rear outer part each include:

a sheet that is not amenable to contact with the skin of the user;

contactable skin sheet; and

an elastic thread existing between the sheet not amenable to contact interaction with the skin of the user and the sheet susceptible to contact interaction with the skin of the user,

at least the non-contactable sheet of the skin of the user of the front outer part has a plurality of linear front slots formed in a row,

at least a sheet that is not amenable to contact with the skin of the user, the rear outer part has many linear rear slots formed in a row,

the rear slots are absent in a vertical position in which the front slots are formed in a row,

the front slots are absent in a vertical position in which the rear slots are formed in a row.

[0016]

In such an absorbent article, the front slots and the rear slots are formed in vertical positions that are different from each other. Accordingly, the strength of the material can be ensured even if air permeability is maintained by forming slots in the front outer part and in the rear outer part.

[0017]

In the above absorbent article, it is desirable that

the configuration of the absorbent product satisfies at least one of the conditions:

the elastic thread of the rear outer part is present in a vertical position in which the front slots are formed in a row; and

the elastic thread of the front outer part is present in a vertical position in which the rear slots are formed in a row.

[0018]

In positions where there are slits of any part of the front outer part and the rear outer part, there is an elastic thread of the other part. Thus, the elastic thread of the other part functions as reinforcing parts for the areas of one part where the slots are formed. In such an absorbent article, the strength of the material can be further increased.

[0019]

In the above absorbent article, it is desirable that

the vertical spacing of any of the front slots formed in a row and the rear slots formed in a row varies depending on the vertical position of any of the front slots and the rear slots,

the vertical spacing between the elastic yarns varies depending on the vertical position of the elastic yarn, and

the elastic threads are arranged so that one elastic thread is located between two vertically close front slots or between two vertically close rear slots.

[0020]

If the pitch of the elastic parts varies depending on the vertical position, the distance between vertically close slots varies, and the elastic parts are arranged such that one elastic thread is located between two vertically close slots. In such an absorbent article, the strength of the material can be increased, and in addition, individual slots can be opened safely.

[0021]

In the above absorbent article, it is desirable that

front outer part and rear outer part each include:

an inner overlapping region that overlaps the vertically and transversely absorbent core;

a lower side region that overlaps the vertically absorbent core and does not overlap the transverse absorbent core;

the upper lateral region, which does not overlap either vertically or transversely absorbing the main part; and

an inner upper region that does not overlap the vertically absorbent core, and which overlaps the transverse absorbent core; and

the sum of the lengths of the front slots in the upper side region per unit of vertical length and in the inner upper region per unit of vertical length is less than the sum of the lengths of the front slots in the lower side region per unit length,

or

the sum of the lengths of the rear slots in the upper side region per unit of vertical length and in the inner upper region per unit of vertical length is less than the sum of the lengths of the rear slots in the lower side region per unit length.

[0022]

The areas that the absorbent body vertically overlaps have a high degree of rigidity against the force tending to tear the absorbent product laterally. Accordingly, in such an absorbent article, the air passage can be provided by forming a large number of slots in those areas that the absorbent body overlaps vertically. In addition, the strength of the material can provide at the same time as ensuring the passage of air by forming fewer slots in areas that the absorbent body does not overlap vertically.

[0023]

In the above absorbent article, it is desirable that

the sum of the lengths of the front slots of the front outer part was less than the sum of the lengths of the rear slots of the rear outer part.

[0024]

In such an absorbent article, it is possible to increase comfort during use by allowing air to pass by forming more slots on the back side, where the user tends to sweat more.

[0025]

In the above absorbent article, it is desirable that

front outer part and rear outer part each include:

an inner overlapping region that overlaps the vertically and transversely absorbent core;

a lower side region that overlaps the vertically absorbent core and does not overlap the transverse absorbent core;

the upper lateral region, which does not overlap either vertically or transversely absorbing the main part; and

an inner upper region that does not overlap the vertically absorbent core, and which overlaps the transverse absorbent core; and

a slot is not formed in the inner upper region of the front outer part.

[0026]

The portion of the front outer part between the absorbent body and the waist opening of the absorbent article, especially the inner upper region, is a portion that is likely to be torn in the transverse direction when the absorbent article is pulled by the user. Although the same applies to the rear outer part, there is a need to ensure breathability in the corresponding portion of the rear outer part because users of the absorbent article tend to sweat more on the rear side. Furthermore, when the user bends forward and his / her back is bent, the user can move more easily if the slots are formed in the rear outer part. In such an absorbent article, the absence of formation of slits in the inner upper region of the front outer part makes it possible to reduce the possibility of tearing and can ensure the strength of its material.

[0027]

In the above absorbent article, it is desirable that

a slot was not formed in the inner upper region and the upper lateral region of the front outer part.

[0028]

Portions of the front outer part that are located between the absorbent body and the waist opening and in which the front outer part does not overlap the vertically absorbent body, that is, the inner upper region and the upper side region of the front outer part, are areas that are likely to be torn along the transverse direction when the absorbent article is pulled by the user. Although the same applies to the rear outer part, there is a need to ensure breathability in the corresponding portion of the rear outer part because users of the absorbent article tend to sweat more on the rear side. Furthermore, when the user bends forward and his / her back is bent, the user can move more easily if the slots are formed in the rear outer part. In such an absorbent article, the absence of the formation of slits in the inner upper region and the upper lateral region of the front outer part makes it possible to reduce the possibility of tearing and can ensure the strength of its material.

[0029]

In the above absorbent article, it is desirable that

in at least one part of the front outer part and the rear outer part, the end portion of the sheet not contactable by the skin of the user is turned back to the side of the sheet contactable by the skin of the user and attached to the sheet contacted by the skin of the skin side user skin.

[0030]

In such an absorbent article, the strength of a portion that is likely to be torn along the transverse direction when the user pulls the absorbent article can be increased by increasing the number of layers constituting this portion.

[0031]

In the above absorbent article, it is desirable that

at least one part of the front outer part and the rear outer part has a reinforcing sheet on the skin of the user of the end portion of the sheet that is susceptible to contact with the skin relative to the vertical direction.

[0032]

In such an absorbent article, the strength of a portion that is likely to be torn along the transverse direction when the user pulls the absorbent article can be increased by increasing the number of layers constituting this portion.

The present embodiment

In FIG. 1 is a perspective view of an absorbent article 100, such as a three-piece disposable diaper, in accordance with the present invention.

[0033]

In FIG. 2 is a schematic top view of an absorbent article 100 in an unfolded state when viewed not from the user's skin.

[0034]

As shown in FIG. 1 and 2, the absorbent article 100 has a vertical direction, a transverse direction, and a thickness direction that are perpendicular to each other. The absorbent article 100 has an absorbent body 102 for covering the groin of the wearer and absorbing liquids such as excreta, a front outer part 104 for covering the front of the wearer, and a rear outer part 106 for covering the back of the wearer.

[0035]

The absorbent body 102 is arranged so that its vertical direction extends in the vertical direction. The front outer part 104 is positioned so that its vertical direction extends in the transverse direction, and is superimposed and attached to the longitudinal end portion of the absorbent body 102 not from the non-skin side relative to the thickness direction. The rear outer part 106, which is a separate part having a larger area than the front outer part 104, is positioned so that its longitudinal direction extends in the transverse direction and is superimposed and attached to the other longitudinal end portion of the absorbent body 102 not from the contacting side with skin relative to the direction of thickness.

[0036]

As shown in FIG. 2, showing the expanded state, the front and rear outer parts 104, 106 are located side by side parallel to each other with a distance between them, and in this state, the absorbent body 102 extends between these parts, as well as the end portions 102ea and 102eb of the absorbent body 102 relative to the vertical direction, they are connected and attached to the nearest parts, that is, the front and rear outer parts 104, 106, respectively, thereby forming an H-shaped external shape in horizontal projection. From the above-described state, the absorbent body 102 is folded half along the mainly central part 102ax, which serves as the folding position relative to the vertical direction thereof. Then, when the front and rear outer parts 104, 106, opposite each other in this double folded state, are connected to each other at portions 104e and 106e (side end portions 104e and 106e) that come into contact with the sides of the user, the front and rear the outer parts 104, 106 are joined together to form an annular shape, and thus, an absorbent article 100 is obtained in a wearable state in which a waist opening AP _wc and a pair of leg openings AP _tc are formed as shown in FIG. one.

[0037]

Various types of connecting structures can be used to connect the front and rear outer parts 104, 106 together. For example, if a non-detachable connecting structure formed by layering is used, for example, an absorbent article 100 such as panties can be manufactured, while if a detachable connecting structure with a fastening tape which is not shown or something similar is used, an absorbent can be manufactured product 100 of the open type. In the present example, the first connecting structure is used, and thus the absorbent article 100 is an absorbent article such as a coward.

[0038]

As shown in FIG. 2 and 3B, the absorbent body 102 includes an absorbent core 108, which is made by forming liquid-absorbing fibers, such as cellulosic fibers, in a predetermined shape, such as an hourglass shape, when viewed from above, the upper surface sheet piece 110 that covers an absorbent core 108 on the skin side, and a rear surface sheet piece 112 that covers the absorbent core 108 not on the skin side, so as to form the outer part of the absorbent core 102. The absorbent core 108 may contain particulate absorbent material, such as a super absorbent polymer, or may contain fluid absorbent material other than fluid absorbent fibers, and particulate absorbent fluid. In addition, the absorbent core 108 may also be coated with a moisture-permeable sheet, such as sanitary paper, which is not shown.

[0039]

The upper surface sheet member 110 is a moisture permeable nonwoven material having a larger area than the absorbent core 108. The rear surface sheet member 112 is also a sheet having a larger area than the absorbent core 108, and, for example, the sheet member 112 may have a two-layer structure, in which a moisture-tight sealed sheet 112a made of polyethylene, polypropylene and the like, and an outer sheet 112b made of non-woven material and the like are glued together. In the state where the absorbent core 108 is located between the rear surface and upper surface sheet parts 112, 110, the moisture tight seal sheet 112a, the rear surface sheet part 112 and the upper surface sheet part 110 are glued together like a frame in portions extending outside four sides of the absorbent core 108 , and thus, an absorbent body 102 is formed.

[0040]

As shown in FIG. 1, 2, and 3B, LCG barrier cuffs and LG foot cuffs can also be formed using the outer sheet 112b. LCG barrier cuffs refer to sealed sections of the LCG wall that are present to lag behind the corresponding lateral end sections of the upper surface sheet metal part 110, and LG foot cuffs relate to stretching LG sections that are formed along the corresponding leg openings AP _{tc of the} absorbent article 100. Cross dimension the outer sheet 112b is made substantially larger than the size of the sealed sheet 112a, that is, the outer sheet 112b extends much further outward along the transverse direction from the two sides meticulous sheet 112a. The portions 112bf extending outside the sealed sheet 112a are turned back toward the central side with respect to the transverse direction, at the folding positions that define the respective lateral end portions 102es of the absorbent body 102. Elastic parts 114, such as elastic threads, are fastened in close proximity to the corresponding folding positions along a vertical direction in a vertically deployed state, and thus the leg cuffs LG are formed. The backward-turned portions 112bg further extend toward the central side with respect to the transverse direction, and are attached to the corresponding side end portions of the upper surface sheet metal 110 at positions where the back-turned portions 112bg cover the lateral end portions of the upper surface sheet metal 110. These portions are attached to the side end portions function as base end portions of LCG _{b of the} corresponding LCG barrier cuffs. The portions extending further in the direction of the respective leading ends with respect to the transverse direction than the base end portions of the LCG _b constitute the free end portions of the LCG _f and can rise from the upper surface sheet part 110. Elastic parts 116, such as elastic threads extending in the vertical direction, attached to the leading end portions of the respective free end portions of the LCG _f in a state in which the elastic parts 116 are vertically extended. Accordingly, when the elastic parts 116 are cut vertically, the absorbent body 102 is vertically bent so that the side of the upper surface sheet part 110 is located on the inner circumferential side, and when the absorbent body 102 is bent, thus, the contraction force exerted by the elastic parts 116 causes vertical reduction and lifting the free end portions of the LCG _f from the upper parts of the surface sheet 110, and thus, free end portions of the LCG _f function as a barrier s LCG cuff.

[0041]

A moisture-permeable sheet, such as sanitary paper, can also be placed, as a second sheet, between the upper surface sheet metal 110 and the absorbent core 108 or between the rear surface sheet metal 112 and the absorbent core 108.

[0042]

Both the front and rear outer parts 104, 106 can be formed using a sheet metal part made of a flexible sheet, such as a non-woven material, and have a substantially rectangular shape when viewed in horizontal view. As shown in FIG. 3A and 3B, the front and rear outer parts 104, 106 are formed using a skin contact sheet 118 and a skin contact sheet 120 that are made of nonwoven fabric, one above the other and both are joined together. The sheets 118, 120 which are not susceptible to contact with the skin of the user and which cannot be contacted with the skin of the user need not be the same size, and, for example, such a configuration as shown in FIG. 4, which is a cross section along axis VI-VI of FIG. 2. In other words, a configuration can be applied in which the vertical size of the non-contactable skin sheet 118 and the non-contactable skin sheet 120 are different, so that the non-contacting sheet 118 of the non-side skin of the user contacting the skin with respect to the direction of thickness extends further vertically in the outer direction from the sheet 120 amenable to contact with the skin of the user. In this case, as shown in FIG. 4, portions 118f of the skin contact sheet 118 that extend further vertically outwardly from the sheet 120 are turned back toward the vertical center along the folding positions that are closest to the vertical end edges of the skin contact sheet 120 of the user . In addition, the backward-curved portions 118g are laid on the contact sheet 120 and are connected to the skin of the user. The backward-turned portions 118g can also be turned backward so that the vertical end portions 102ea and 102eb of the absorbent body 102 are partially covered by the corresponding back-turned portions 118g from the skin side of the user of the absorbent body 102.

[0043]

As shown in FIG. 1 and 2, the front and rear outer parts 104, 106 respectively have inner overlapping regions 132be and 132re, which the absorbent body 102 overlaps vertically and transversely, the lower side regions 134be and 134re, which the absorbent body 102 overlaps vertically from the side, the upper side regions 136be and 136re, which the absorbent body 102 does not overlap either vertically or transversely, and the inner upper regions 138be and 138re, which the absorbent body 102 does not overlap vertically, but not laterally.

[0044]

In the front and rear outer parts 104, 106, the end portions 102ea and 102eb of the absorbent body 102 with respect to the vertical direction are covered by respective inner overlapping areas 132be and 132re from the side not in contact with the skin of the absorbent main part 102, and the inner overlapping areas 132be and 132re of the front and the rear outer parts 104, 106 are respectively superimposed on and connected to the respective end portions 102ea and 102eb.

The absorbent body 102 is superimposed on the inner overlapping regions 132be and 132re of the front and rear outer parts 104, 106, respectively, without overlapping the absorbent body 102 on the inner upper regions 138be and 138re. Thus, the inner upper regions 138be and 138re of the front and rear outer parts 104, 106, respectively, each constitute a tape-shaped portion that the absorbent body 102 does not vertically overlap along the entire lateral length of this ribbon-shaped portion. These inner upper regions 138be and 138re serve as portions of the waist opening AP _{wc of the} absorbent article 100, and elastic parts 140 are located in the inner upper regions 138be and 138re so as to extend continuously mainly along the entire lateral length of the inner upper regions 138be and 138re. In addition, with respect to the vertical dimensions L _be and L _{re of the} respective inner upper regions 138be and 138re, in which the absorbent body 102 does not overlap, the size of the rear outer part 106 is made larger than the size of the front outer part 104 (L _re > L _be ), and in general, the position of the absorbent body 102 is shifted toward the side of the front outer part 104, and not toward the side of the rear outer part 106. Thus, uniform absorption of liquids such as excreta is guaranteed. Alternatively, the ratio of the sizes L _be and L _re may be the inverse (L _re <L _be ), or the sizes L _be and L _re may be equal to each other (L _re = L _be ).

[0045]

In the absorbent article 100 in accordance with the present invention, a plurality of elastic parts 140, such as elastic threads extending in the transverse direction, are provided between the skin contact sheet 118 and the skin 120 that is not contacted by the skin of the user. The elastic parts 140 are attached to one or both sheets 118, 120 which are not susceptible to contact with the skin of the user and which are contacted with the skin of the user in adhesive areas formed by the deposition (coating) of an adhesive, such as hot-melt adhesive, with a given weight of the coating layer (weight per unit area), in a state in which the elastic parts 140 are elongated laterally. Adhesion areas can be formed by deposition of adhesive on sheets 118, 120 which is not susceptible to contact with the skin of the user and is susceptible to contact with the skin of the user or deposition of adhesive on the elastic parts 140, or both.

[0046]

As shown in FIG. 2, in each of the front and rear outer parts 104, 106, a pair of internal adhesive regions 142 is formed, overlapping the elastic parts 140 on the lateral inner sides of the vertical end portions 102ea or 102eb of the absorbent body 102. In each internal adhesive region 142, the entire region is coated with adhesive, using a coating method, such as a helical coating, a test seam coating, or a full surface coating using a coating device.

[0047]

In the absorbent article 100 in accordance with the present invention, the lateral contraction force is controlled by cutting at least a portion of the elastic parts 140.

[0048]

Elastic parts 140 that are laterally extended are cut off by a cutting tool or the like between a pair of internal bonding regions 142, for example, on a center line CL. However, the position where the elastic parts 140 are cut off is not limited to the center line CL; the elastic parts 140 may be cut at a position offset from the center line CL, or may be cut at a plurality of positions between two groups of the elastic part 114 for the leg cuff LG and the elastic parts 116 for the barrier cuff LCG. In addition, the elastic parts 140 are optionally cut in a single cutting process (cutting process) and can also be cut using a variety of cutting processes. The elastic parts 140 that have been cut are pulled back from their positions when the elastic parts 140 are cut to the lateral outer sides of the elastic leg parts 114 for the LG leg cuffs and the elastic part 116 for the LCG barrier cuffs. Hereinafter, this operation is called “trimming”.

[0049]

The tensile ratios in the areas in the elastic parts 140 located in areas that overlap the absorbent body 102 (the areas where the elastic parts 140 are trimmed) have a higher tensile coefficient than the elastic parts 140 in other areas or other elastic parts. The above configuration is applied because the low tensile coefficient of the elastic parts 140 can lead to insufficient trimming. “Stretch factor” refers to the extent to which each elastic part is stretched when attached to a sheet or the like in a stretched state, and the greater the coefficient of stretch of the elastic part, the greater the contractile force that the elastic part can exhibit. For example, there is a risk that if the tensile coefficient is small, the elastic parts 140 cannot be sufficiently reduced after cutting on the center line CL, and thus the portion of the elastic parts 140 may remain on the lateral inner sides of the elastic parts 114 for the LG cuffs and the elastic parts 116 for barrier cuffs LCG. To solve this problem, the tensile coefficient of the elastic parts 140 in the areas covered by the absorbent body 102 is made larger than the coefficient of other elastic parts and the like, thereby allowing these elastic parts 140 to be properly reduced due to cropping. Thus, it is possible to eliminate the occurrence of a situation in which some elastic parts 140, which contract laterally, remain on the lateral inner sides of the elastic parts 114 for the leg cuffs LG and the elastic parts 116 for the barrier cuffs LCG.

[0050]

Trimming the elastic parts 140 while simultaneously accurately controlling the position at which the elastic parts 140 are shortened as described above allows you to precisely adjust the tension around the waist, which in turn can provide a better fit for the absorbent article 100. In addition, as a result of trimming, the elastic parts 114 for the legs the LG cuffs and the elastic parts 116 for the LCG barrier cuffs no longer intersect the elastic parts 140, and thus they are no longer likely to exert a reduction force on the elastic parts 140 and borot. Therefore, when wearing the absorbent article 100, the user can easily move his legs and the like.

[0051]

Returning to FIG. 1 and 2, in the front and rear outer parts 104, 106 formed by superposing sheets 118, 120 which are not contactable by the skin of the user and which are contacted by the skin of the user on top of each other, a plurality of transverse elongated slots 150 of the absorbent article 100 are formed in the lower the side regions 134be and 134re and the upper side regions 136be and 136re. The slots 150 are formed so that the plurality of slots 150 are in line with each other at predetermined intervals (slot step) along the transverse direction of the absorbent article 100. With reference to FIG. 2, for example, in the lower lateral regions 134be and 134re, four slots 150, each of which has a length (length of the slot) of 3 [mm], are formed in each row with a slot pitch of 8 [mm]. In the upper lateral regions 136be and 136re, five slots 150 having a length of 2 [mm] are formed in each row with a slot pitch of 8 [mm]. A plurality of rows of slots 150 are formed at predetermined vertical intervals in accordance with the vertical intervals of the elastic parts 140. Typically, slots 150 are sections, each of which is formed by making a narrow cut in at least one of the sheets 118, 120 which is not susceptible to contact with the skin of the user and amenable to contact with the skin of the user. It is desirable that the linear slots 150 have a length of 5 mm to 15 mm. With a slit length of 5 [mm] or more, slots 150 are easily recognized, and with a slit length of 15 [mm] or less, the wrapping (twisting) of the material can be prevented. The slots 150 may be linear slots or may be cut sections having a certain width. When the strength of the parts is taken into account, linear slots are preferred. The slots 150 may be formed in at least one of the front or rear outer parts 104, 106, or may similarly be formed in the front and rear outer parts 104, 106. In addition, the slots 150 may be formed in at least one of the sheets 118, 120 non-contactable with the skin of the user, amenable to contact with the skin of the user, or can likewise be formed on sheets 118, 120 which is not contactable with the skin of the user and amenable to contact interaction with the skin of the user.

[0052]

As shown in FIG. 2, the lower side regions 134be and 134re and the upper side regions 136be and 136re in which the slots are formed have a width W in the transverse direction and are located on opposite sides of the inner overlapping regions 132be and 132re and the inner upper regions 138be and 138re , the inner overlapping region 132be or 132re and the inner upper region 138be or 138re have a transverse width M. In the above regions having a width W, slots 150 are formed within the inner regions having a width W ₁ (hereinafter, these regions and are referred to as “opposing slots SSA”), excluding the lateral outer portions W ₂ adjacent to the corresponding connecting base portions of the lateral sealed areas, within the distance W ₂ from the corresponding lateral end portions 104 e and 106 e of the front and rear outer parts 104, 106. In addition , the upper side regions 136be and 136re and the inner upper regions 138be and 138re have a vertical length H ₁ from the vertical end portions of the front and rear outer parts 104, 106, respectively, the end portions form a waist hole AP _{wc of the} absorbent article 100. The lower side regions 134be and 134re and the inner overlapping regions 132be and 132re have a vertical length H ₂ from the vertical end portions of the front and rear outer parts 104, 106, respectively, the end portions form the foot openings AP _{tc of the} absorbent article 100. Other in words, the vertical length H of the front and rear outer parts 104, 106 is defined as H = H ₁ + H ₂ . In portions of the inner overlapping regions 132be and 132re that have a vertical length H ₂ from the respective end portions on the side of the foot openings AP _tc , portions within the distance H ₂₀ from those respective end portions are subjected to the above-described trimming process, and thus, elastic parts 140 are not present a portion that overlaps the absorbent core 108. The lower side regions 134be and 134re relatively long slits 150 are formed in areas within the distance H from the corresponding ₂₀ Vertical ial end portions of the front and rear outer parts 104, 106, the end portions forming leg openings AP _tc of the absorbent article 100. In other portions of the lower side regions 134be and 134re, which have a vertical length H ₂₁ are formed relatively short slits 150. The vertical length H ₂ the lower side regions 134be and 134re and the inner overlapping regions 132be and 132re is defined as H ₂ = H ₂₀ + H ₂₁ . In the upper lateral regions 136be and 136re, relatively short slots 150 are formed.

[0053]

The inner overlapping regions 132be and 132re and the inner upper regions 138be and 138re, which have a transverse width M, constitute regions in which no slots 150 are formed (hereinafter, these regions are referred to as "areas without NSA slots"). In addition, the lateral outer portions W ₂ adjacent to said laterally sealed regions constitute regions without slots for the entire vertical length H of the front and rear outer parts 104, 106.

[0054]

As described above, the opposing regions of the SSA slots of the front and rear outer parts 104, 106 are arranged so as to be aligned in the transverse direction, that is, in the lateral direction at a distance from areas without NSA slots between them. In areas without NSA slots, the absorbent body 102 vertically and transversely overlaps the front and rear outer parts 104, 106, and thus areas without NSA slots constitute areas having a high degree of stiffness against transverse shear forces in the vertical and transverse directions. The transverse length M of the regions without NSA slots of the front and rear outer parts 104, 106 can be set appropriately taking into account the effects of the opposing regions of the SSA slots and the connecting force between the sheets 118, 120 which is not susceptible to contact with the skin of the user and which is not contacted with the skin of the user.

[0055]

In areas where the sheets 118, 120 which are not contactable by the skin of the user and which are contactable by the skin of the user are superimposed on one another, two sheet parts are connected to each other and combined into a single part that has the ability to stretch in the direction around the waist, that is, the transverse direction of the absorbent article 100. Opposite regions of the slots SSA of the sheet 118 which is not amenable to contact with the skin of the user are connected to the inner laminate 31 and dissolved stretchability. In the opposite areas of the SSA slots, sheets 118, 120 which are not contactable by the skin of the user and which are contactable by the skin of the user are connected to each other by a surface-to-surface contact method along a vertical length H and have the ability to stretch. The tensile ability can be further increased by placing elastic parts 140 between the sheets 118, 120 which are not amenable to contact interaction with the skin of the user and amenable to contact interaction with the skin of the user. In this case, the elastic parts 140 are held between the sheets 118, 120 which are not susceptible to contact with the skin of the wearer and which are susceptible to contact with the skin of the wearer in a stretched state, and thus have the ability to stretch. Alternatively, both or one of the sheets 118, 120 which is not contactable by the skin of the user and which is contactable by the skin of the user may consist of a stretching material.

[0056]

In opposing areas of the SSA slots, a lateral contraction of the front and rear outer parts 104, 106, which are stretchable, widens the gap between the two edges making up each slot 150, and the widened gaps serve as air passage openings in the front and rear outer parts 104, 106. In addition, when the user wears the absorbent article 100, the front and rear outer parts 104, 106 are stretched or contracted due to body movement or the like, the air passage openings open or close. I am in accordance with the movement, thus contributing to the removal of moisture from the inner side of the absorbent article 100 and further increasing breathability. In addition, with a plurality of slots 150, opposed areas of the SSA slots of the sheet 118 of the non-contacting skin of the user are deformed more easily than areas without NSA slots, and have excellent flexibility. Further, due to the ability to stretch, each slit 150 is twisted, creating fine wrinkles, and thus the waist region becomes soft.

[0057]

A plurality of elastic parts 140 are positioned, connected, and fastened between non-contacting sheets of the skin 118, 120 and contacting the skin of the user at vertical intervals in a state in which the elastic parts 140 are laterally stretched without affecting the slots 150 that are formed in rows. In other words, the elastic parts 140 are securely held, connected, and fastened between the non-contacting sheets 118, 120 and the contacting skin of the user without exiting through the slots 150. Thus, the elastic parts 140 are integral with the sheet 118 non-contactable with the skin of the user and the sheet 120 amenable to contact with the skin of the user, which form the front and rear outer parts 104, 106 into a single part transmitting ability to contract in the direction around the waist, that is, in the transverse direction. Preferably, the elastic parts 140 are continuously connected to non-contacting sheets of the skin of the user 118 and contacting to the skin of the user by surface-to-surface contact not only in opposing regions of the SSA slots, but also in the inner overlapping regions 132b and 132re and the lateral outer portions of W ₂ using a hot-melt adhesive as described above. Thus, not only the hot-melt adhesive deposited on the elastic parts 140 themselves, but also on the surface of the sheets 118, 120, which is not susceptible to contact with the skin of the user and contact with the skin of the user, facilitates the fastening of the elastic threads, and therefore, the separation of the elastic threads can be prevented .

[0058]

Here, FIG. 5 shows the relative position of the elastic parts 140 and the slots 150 of the front outer part 104 and the elastic parts 140 and the slots 150 of the rear outer part 106.

[0059]

As mentioned above, the absorbent article 100 includes: an absorbent body 102, which has an absorbent core 108; front outer part 104; and a rear outer part 106. The front and rear outer parts 104, 106 each includes a contact sheet 111 that is not responsive to the skin of the user, a sheet 120 that is not contactable to the skin of the user, and elastic parts 140 that are installed between the contact sheet 118, 120 interaction with the skin of the user and amenable to contact interaction with the skin of the user. A plurality of linear slots 150 are transversely formed in rows in at least a sheet 118 which are not susceptible to contact with the skin of the user of the front outer part 104. Moreover, a plurality of linear slots 150 are formed transversely in rows of at least in the sheet 120 of contactable with the skin of the user of the rear outer details 106. A distinctive feature of the absorbent article 100 in accordance with the present embodiment is that which is shown in cross section along the x-axis, the rear outer the hoist 106 does not contain slots 150 in vertical positions in which a plurality of slots 150 are formed in rows in the front outer part 104, and on the other hand, the front outer part 104 does not contain slots 150 in vertical positions in which a plurality of slots 150 are formed in rows in the back outer part 106.

[0060]

With this configuration of the absorbent article 100, in the vertical direction, the slots 150 on the front side are not formed in the same vertical positions as the slots 150 on the rear side. Thus, the strength of the material can be ensured even if breathability is ensured by the formation of slots 150 in the front and rear outer parts 104, 106.

[0061]

In addition, as shown in a cross section along XX, the elastic parts 140 of the rear outer part 106 may be present in those vertical positions in the rear outer part 106 that are the same as the vertical positions in which a plurality of slots 150 are formed in rows in the front outer part 104. In addition, the elastic parts 140 of the front outer part 106 may be present in those vertical positions in the front outer part 104, which are the same as the vertical positions in which a plurality of slots 150 are formed in rows in the back outer part 106.

[0062]

In this configuration of the absorbent article 100, in those positions in which a plurality of slots 150 are formed, either in the front outer part 104 or in the rear outer part 106, elastic parts 140 of the other part are present. Thus, the elastic parts 140 of the other part function as reinforcing parts for areas of one part where slots 150 are formed in rows. Therefore, the strength of the material can be further increased.

[0063]

The vertical intervals of the rows of the above-described slots 150 formed at transverse intervals can vary depending on the vertical position in the absorbent article 100. In this case, it is preferable that the vertical intervals of the elastic parts 140 vary depending on the vertical position and the elastic parts 140 are arranged so so that one elastic element 140 is located between each two rows of slots 150, which are vertically adjacent to each other.

[0064]

In such a configuration of the absorbent article 100, if the pitch of the elastic parts 140 varies depending on the vertical position, the distance between the slots 150 that are vertically adjacent to each other also varies accordingly, and the elastic parts 140 are arranged so that one elastic part 140 is located between each two slots 150, which are vertically adjacent to each other. In this configuration, the strength of the material may increase, and the individual slots 150 can be safely opened.

[0065]

Here, users wearing the absorbent article 100 tend to sweat more on the back side than on the front side. Accordingly, it is desirable to make the density of the slots 150 in the rear outer part 106 greater than the density of the slots 150 in the front outer part 104. Moreover, in the inner overlapping regions 132be and 132re, the materials are superimposed one on top of the other in the thickness direction, and thus the regions formed by the bottom the lateral regions 134be and 134re, which vertically overlap the inner overlapping regions 132be and 132re, have a higher degree of stiffness against stress, which tends to tear the absorbent article 100 across th direction. Accordingly, it is desirable that the density of the slots in the lower side regions 134be and 134re be greater than the density of the slits in the inner upper regions 138be and 138re and the upper side regions 136be and 136re.

[0066]

Therefore, a plurality of slots 150 that are formed as shown in FIG. 2, satisfy {(L ^(be) _bus + L ^(be) _mus ) / H ₁ } <{L ^(be) _bls / H ₂ }, where L ^(be) _bus represents the sum of the lengths of slots 150 in the upper lateral regions 136b of the front of the outer part 104, L ^(be) _mus represents the sum of the lengths of the slots 150 in the inner upper region 138be, and L ^(be) _bls represents the sum of the lengths of the slots 150 in the lower side regions 134be. In other words, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134be per unit length.

[0067]

Further, a plurality of slots 150 that are formed as shown in FIG. 2, satisfy {(L ^(re) _bus + L ^(re) _mus ) / H ₁ } <{L ^(re) _bls / H ₂ }, where L ^(re) _bus represents the sum of the lengths of the slots 150 in the upper lateral regions of the 136re back of the outer part 106, L ^(re) _mus represents the sum of the lengths of the slots 150 in the inner upper region 138re, and L ^(re) _bls represents the sum of the lengths of the slots 150 in the lower side regions 134re. In other words, in the rear outer part 106, the sum of the lengths of the slots 150 in the upper side regions 136re per unit of vertical length and in the inner upper region 138re by a unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134re per unit length.

[0068]

The areas that the absorbent body 102 vertically overlaps have a high degree of stiffness against the force tending to tear the absorbent article 100 laterally. Therefore, air passage can be provided by forming a large number of slots 150 in those areas that the absorbent body 102 vertically overlaps, as mentioned above . In this case, the strength of the material can be ensured simultaneously with the passage of air by forming a smaller number of slots 150 in areas that the absorbent body 102 does not vertically overlap.

[0069]

Further, in the above case, a plurality of slots 150 that are formed as shown in FIG. 2, satisfies {(L ^(be) _bus + L ^(re) _bus ) / H ₁ } <{(L ^(be) _{bls +} L ^(re) _bls ) / H ₂ }. In other words, the value obtained by dividing the total length of the linear slots 150 in the upper side regions 136be and 136re, which the absorbent body 102 does not overlap either vertically or transversely, by the vertical length of the upper side regions 136be and 136re, is less than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps the front and rear outer parts 104, 106, but does not overlap transversely to the vertical length of the lower H ₂ bo ovyh areas 134be and 134re.

[0070]

The purpose of this is that, as described above, since the areas that the absorbent body 102 vertically overlap have a high degree of stiffness against the force tending to tear the absorbent article 100 in the transverse direction, air passage is provided by forming a large number of slots 150 in these areas that the absorbent body 102 vertically overlaps, while the strength of the material can be ensured simultaneously with the passage of air by forming less va slots 150 in the areas that the absorbent body 102 vertically overlaps.

[0071]

A plurality of slots 150 that are formed as shown in FIG. 2 satisfy L ^(be) <L ^(re) , where L ^(be) represents the sum of the lengths of the slots 150 in the front outer part 104, and L ^(re) represents the sum of the lengths of the slots 150 in the rear outer part 106. The formation of the slots 150 in this way makes it possible to allow air to pass by forming more slots 150 on the rear side, where users of the absorbent article 100 tend to sweat more, and improve wearing comfort.

[0072]

Further, it is also possible not to form slots 150 in the inner upper region 138b of the front outer part 104. The portion of the front outer part 104 between the absorbent body 102 and the waist opening AP _{wc of the} absorbent article 100, especially the inner upper region 138be, is a portion that is most likely may be torn in the transverse direction when the absorbent article 100 is pulled by the user. Although this applies to the rear outer part 106, there is a need to ensure breathability in the corresponding portion of the rear outer part 106 because users of the absorbent article 100 tend to sweat more on the back side. In addition, when the user bends forward and his / her back is bent, the user can move more easily if the slots are formed on the rear outer part 106. Accordingly, the absence of the formation of slots 150 in the inner upper region 138b of the front outer part 104 can reduce the possibility of tearing and can provide material strength. It is also possible that slots 150 are not formed in the inner upper region 138be and the upper side regions 136be of the front outer part 104. As described above, the absence of slits in the inner upper region 138be and the upper side regions 136b of the front outer part 104 can reduce the possibility of tearing and can provide strength material.

[0073]

The slots 150 can be formed in various ways by changing the length, spacing and number of slots 150.

[0074]

In FIG. 6 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

[0075]

In FIG. 6, a plurality of slots 150 are formed only in the lower side regions 134be and 134re of the front and rear outer parts 104, 106 and are not formed in the inner upper regions 138be and 138re and the upper side regions 136be and 136re. In each row of slots 150, along the transverse direction of the absorbent article 100, four slots 150 are formed on each side. The slots have a length of 3 [mm] and four slots 150 are formed at intervals of 8 [mm], 12 [mm] and 8 [mm].

[0076]

When a plurality of slots 150 are formed, as shown in FIG. 5, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be by one unit of vertical length is less than the sum of the lengths of the slots 150 in lower lateral areas 134be per unit length.

[0077]

Furthermore, when a plurality of slots 150 are formed, as shown in FIG. 5, in the rear outer part 106, the sum of the lengths of the slots 150 in the upper side regions 136re per unit of vertical length and in the inner upper region 138re per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134re per unit length.

[0078]

Further, when a plurality of slots 150 are formed, as shown in FIG. 6, the value obtained by dividing the total length of the linear slots 150 in the upper lateral regions 136b and 136re, which the absorbent body 102 does not overlap in either the vertical or transverse direction, by the vertical length H _{1 of the} upper lateral regions 136b and 136re, is less than than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps the front and rear outer parts 104, 106, but does not overlap transversely to the vertical length of the lower H ₂ 134be of the side areas and 134re.

[0079]

In FIG. 7 shows yet another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

[0080]

In FIG. 7, a plurality of slots 150 are formed only in the lower side regions 134be and 134re of the front and rear outer parts 104, 106 and are not formed in the inner upper regions 138be and 138re and the upper side regions 136be and 136re. The slots 150 formed in the front and rear outer parts 104, 106, each has a length of 3 [mm]. In the front outer part 104, a plurality of slots 150 are formed such that the closer the vertical position of the rows in which the slots 150 are transversely aligned with the foot hole AP _tc , the closer the slots 150 are in the transverse direction to the absorbent body 102. The slots 150 in the rear outer part 106 are formed in the same way as in the case of FIG. 5. A total of 36 slots 150 are formed in the front outer part 104, and a total of 48 slots 150 are formed in the rear outer part 106.

[0081]

Accordingly, when a plurality of slots 150 are formed, as shown in FIG. 7, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134be per unit length.

[0082]

Furthermore, when a plurality of slots 150 are formed, as shown in FIG. 7, in the rear outer part 106, the sum of the lengths of the slots 150 in the upper side regions 136re per unit of vertical length and in the inner upper region 138re per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134re per unit length.

[0083]

Further, when a plurality of slots 150 are formed, as shown in FIG. 7, the value obtained by dividing the total length of the linear slots 150 in the upper side regions 136b and 136re, which the absorbent body 102 does not overlap in either the vertical or transverse direction, by the vertical length H _{1 of the} upper side regions 136be and 136re, is less than than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps in the front and rear outer parts 104, 106, but does not cross laterally, by the vertical length H _{2 of the} lower their lateral regions 134be and 134re.

[0084]

In the front outer part 104 of FIG. 7, the slots 150 are formed so that the closer the vertical position of the slots 150 is to the leg hole AP _tc , the closer the slots 150 are to the center of the absorbent article 100. Thus, when the absorbent article 100 is put on, the bending stiffness of the absorbent article 100 in the vertical direction decreases in the areas corresponding to the area around the leg / hip joint, and when the legs move, the absorbent article 100 bends easily in the shape of the inguinal region. In addition, the strength of the material in the area that covers the inguinal region is reduced, and thus, the front outer part 104 easily fits under the inguinal region due to the reduction of the elastic parts 140. The ease of fitting makes it difficult to form any space between the front outer part 104 and the front user side, and thus air heated by body heat is unlikely to linger. Also, slots 150 allow air to pass through, and so breathability is improved.

[0085]

In FIG. 8 shows yet another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

[0086]

In FIG. 8, a plurality of slots 150 are formed only in the lower side regions 134be and 134re of the front and rear outer parts 104, 106 and are not formed in the inner upper regions 138be and 138re and the upper side regions 136be and 136re. In FIG. 8, slots 150 formed in the front and rear outer parts 104, 106 are configured as multi-slots 150, in each of which three slots having a length of 3 [mm] are made within a region having a transverse length of 3 [mm] in the transverse direction and a length of 2 [mm] in the vertical direction. In such a configuration, the sheet 118 which is not amenable to contact with the skin of the user between the slots of each multi-slot 150 constitutes a plurality of tape-shaped sections, and these tape-shaped sections are twisted independently, and thus, the resulting holes are more easily recognized visually.

[0087]

When a plurality of multi-cuts 150 are formed, as shown in FIG. 8, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134be per unit length.

[0088]

Furthermore, when a plurality of multi-cuts 150 are formed, as shown in FIG. 8, in the rear outer part 106, the sum of the lengths of the slots 150 in the upper side regions 136re per unit of vertical length and in the inner upper region 138re by a unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134re per unit of length.

[0089]

Further, when a plurality of multi-cuts 150 are formed, as shown in FIG. 8, the value obtained by dividing the total length of the linear slots 150 in the upper lateral regions 136b and 136re, which the absorbent body 102 does not overlap in either the vertical or transverse direction, by the vertical length H _{1 of the} upper lateral regions 136b and 136re, is less than than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps the front and rear outer parts 104, 106, but does not overlap transversely to the vertical length of the lower H ₂ 134be of the side areas and 134re.

[0090]

FIG. 9 shows another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

[0091]

In FIG. 9, a plurality of slots 150 are formed only in the lower side regions 134be and 134re of the front and rear outer parts 104, 106 and are not formed in the inner upper regions 138be and 138re and the upper side regions 136be and 136re. In the lower side regions 134be and 134re, two different patterns are used for arranging the slots 150 in separate rows in which the slots 150 are laterally aligned. For example, in FIG. 6, four slots 150, each 3 [mm] long, are formed at intervals of 8 [mm], 12 [mm] and 8 [mm], with FIG. 9, one of the two patterns is a pattern in which only an even number of slots 150 is formed, and the other pattern is a pattern in which only an odd number of slots 150 is formed. As shown in this drawing, the above two patterns are alternately formed in different vertical positions in the lower side areas 134be and 134re.

[0092]

When a plurality of slots 150 are formed, as shown in FIG. 9, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134be per unit length.

[0093]

Furthermore, when a plurality of slots 150 are formed, as shown in FIG. 9, in the rear outer part 106, the sum of the lengths of the slots 150 in the upper side regions 136re per unit of vertical length and in the inner upper region 138re per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134re per unit length.

[0094]

Further, when a plurality of slots 150 are formed, as shown in FIG. 9, the value obtained by dividing the total length of the linear slots 150 in the upper side regions 136b and 136re, which the absorbent body 102 does not overlap in either the vertical or transverse direction, by the vertical length H _{1 of the} upper side regions 136be and 136re, is less than than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps the front and rear outer parts 104, 106, but does not overlap transversely to the vertical length of the lower H ₂ 134be of the side areas and 134re.

[0095]

In FIG. 10 shows yet another example of the manner in which slots 150 are formed in the front and rear outer parts 104, 106.

[0096]

The location of the slots 150 in FIG. 10 is obtained by replacing the slots 150 in the rear outer part 106 with the location of the slots 150 in FIG. 6 by multi-cuts 150. Similarly to FIG. 8, in FIG. 10, the slots 150 formed in the rear outer part 106 are configured as multi-slots 150, in each of which three slots 3 [mm] long are made in a region having a length of 3 [mm] in the transverse direction and a length of 2 [mm] in the vertical direction . In addition, a plurality of slots 150 or multi-slots 150 are formed only in the lower side regions 134be and 134re of the front and rear outer parts 104, 106 and are not formed in the inner upper regions 138be and 138re and the upper side regions 136be and 136re.

[0097]

Accordingly, a plurality of slots 150 and multi-slots 150 that are formed as shown in FIG. 10 satisfy L ^(be) <L ^(re) , where L ^(be) represents the sum of the lengths of the slots 150 in the front outer part 104, and L ^(re) represents the sum of the lengths of the slots 150 constituting the multi-slots 150 in the rear outer part 106.

[0098]

Further, when a plurality of slots 150 are formed, as shown in FIG. 10, in the front outer part 104, the sum of the lengths of the slots 150 in the upper side regions 136be per unit of vertical length and in the inner upper region 138be per unit of vertical length is less than the sum of the lengths of the slots 150 in the lower side regions 134be per unit length.

[0099]

Furthermore, when a plurality of slots 150 and multi-slots 150 are formed, as shown in FIG. 10, in the rear outer part 106, the sum of the lengths of the slots 150 constituting the multipoles 150, in the upper side regions 136re per unit of vertical length and in the inner upper region 138re per unit of vertical length is less than the sum of the lengths of the slots 150 constituting the multipoles 150 in the lower side areas 134re per unit length.

[0100]

Further, when a plurality of slots 150 and multi-slots 150 are formed, as shown in FIG. 10, the value obtained by dividing the total length of the linear slots 150 in the upper side regions 136be and 136re, which the absorbent body 102 does not overlap in either the vertical or transverse direction, by the vertical length of the upper side regions 136be and 136re, is less than the value obtained by dividing the total length of the linear slots 150 in the lower side regions 134be and 134re, which the absorbent body 102 vertically overlaps in the front and rear outer parts 104, 106, but does not cross laterally, into the vertical length H _{2 of the} lower side regions 134be and 134re.

[0101]

The location of the slots in FIG. 11 is the same as the location of the slots in FIG. 6, but slots 150 each are X-shaped. In addition, the location of the slots in FIG. 12 is the same as the location of the slots in FIG. 6, but slots 150 each have a U-shape.

[0102]

The functioning and effects of the locations of the slots 150 shown in FIG. 11 and 12, the same as the locations of the slots 150 shown in FIG. 6.

[0103]

The above description merely represents the disclosure of specific embodiments of the invention and in no way limits the invention to the embodiments described above. As such, the invention is not limited to the embodiments described above. On the contrary, it should be understood that one skilled in the art can understand alternative embodiments falling within the scope of the invention.

LIST OF REFERENCE NUMBERS

[0104]

100: absorbent article

102: absorbent body,

104: front outer part,

106: rear outer part,

108: absorbent core,

110: upper surface sheet part,

112: lower surface sheet part,

114, 116: elastic part,

118: non-contact sheet with user skin,

120: contactable skin sheet of a user,

132be, 132re: inner overlapping region,

134be, 134re: lower lateral region,

136be, 136re: upper lateral region,

138be, 138re: inner upper region,

140: elastic part (elastic thread),

150: slot.

Claims (44)

1. An absorbent product having a vertical direction, a transverse direction and a thickness direction that are perpendicular to each other, comprising: front outer part, which is located along the transverse direction; and rear outer part, which is located along the transverse direction, a lateral end portion of a front outer part connected to a lateral end portion of a rear outer part, front outer part and rear outer part each include: a sheet that is not amenable to contact with the skin of the user, located not on the side in contact with the skin; a contactable skin sheet located on a skin contacting side; and an elastic thread existing between a sheet not contactable by the skin of the user and a sheet contactable by the skin of the user, at least a sheet that is not amenable to contact with the skin of the user of the front outer part has a plurality of linear front slots formed in a row, at least a sheet that is not amenable to contact with the skin of the user of the rear external part has a plurality of linear rear slots formed in a row, the rear slots are absent in a vertical position in which the front slots are formed in a row, the front slots are absent in a vertical position in which the rear slots are formed in a row. 2. The absorbent product according to claim 1, in which the configuration of the absorbent product satisfies at least one of the conditions: the elastic thread of the rear outer part is present in a vertical position in which the front slots are formed in a row; and the elastic thread of the front outer part is present in a vertical position in which the rear slots are formed in a row. 3. The absorbent product according to claim 1 or 2, in which the vertical spacing of any of the front slots formed in a row and the rear slots formed in a row varies depending on the vertical position of any of the front slots and the rear slots, the vertical spacing between the elastic yarns varies depending on the vertical position of the elastic yarn, and elastic threads are arranged so that one elastic thread is located between two vertically adjacent front slots or between two vertically adjacent rear slots. 4. The absorbent product according to any one of paragraphs. 1-3, in which front outer part and rear outer part each include: an inner overlapping region that overlaps the vertically and transversely absorbent core; a lower side region that overlaps the vertically absorbent core and does not overlap the transverse absorbent core; the upper lateral region, which does not overlap either vertically or transversely absorbing the main part; and an inner upper region that does not overlap the vertically absorbent core and which overlaps the transverse absorbent core; and the sum of the lengths of the front slots in the upper side region per unit of vertical length and in the inner upper region per unit of vertical length is less than the sum of the lengths of the front slots in the lower side region per unit length, or the sum of the lengths of the rear slots in the upper side region per unit of vertical length and in the inner upper region per unit of vertical length is less than the sum of the lengths of the rear slots in the lower side region per unit length. 5. The absorbent product according to any one of paragraphs. 1-4, in which the sum of the lengths of the front slots of the front outer part was less than the sum of the lengths of the rear slots of the rear outer part. 6. The absorbent product according to any one of paragraphs. 1-5, in which front outer part and rear outer part each include: an inner overlapping region that overlaps the vertically and transversely absorbent core; a lower side region that overlaps the vertically absorbent core and does not overlap the transverse absorbent core; the upper lateral region, which does not overlap either vertically or transversely absorbing the main part; and an inner upper region that does not overlap the vertically absorbent core and which overlaps the transverse absorbent core; and a slot is not formed in the inner upper region of the front outer part. 7. The absorbent product according to claim 6, in which in the inner upper region and the upper lateral region of the front outer part, a slot is not formed. 8. The absorbent product according to any one of paragraphs. 1-7, in which in at least one part of the front outer part and the rear outer part, the end portion of the sheet not contactable by the skin of the user is turned back to the side of the sheet contactable by the skin of the user and attached to the sheet contacted by the skin of the user, from the side in contact with the skin. 9. The absorbent product according to any one of paragraphs. 1-7, in which at least one part of the front outer part and the rear outer part has a reinforcing sheet on the side in contact with the skin of the end portion of the sheet that is susceptible to contact with the skin of the user, relative to the vertical direction.

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