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WO2018198843A1 - Corps de type filet - Google Patents

Corps de type filet Download PDF

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Publication number
WO2018198843A1
WO2018198843A1 PCT/JP2018/015630 JP2018015630W WO2018198843A1 WO 2018198843 A1 WO2018198843 A1 WO 2018198843A1 JP 2018015630 W JP2018015630 W JP 2018015630W WO 2018198843 A1 WO2018198843 A1 WO 2018198843A1
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WO
WIPO (PCT)
Prior art keywords
adjacent
monofilaments
adjacent yarn
net
mesh
Prior art date
Application number
PCT/JP2018/015630
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English (en)
Japanese (ja)
Inventor
安立剛士
貝原　祐一
佳孝 國定
Original Assignee
小泉製麻株式会社
萩原工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 小泉製麻株式会社, 萩原工業株式会社 filed Critical 小泉製麻株式会社
Priority to JP2019514397A priority Critical patent/JP6757962B2/ja
Publication of WO2018198843A1 publication Critical patent/WO2018198843A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
    • A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/573—Tensile strength

Definitions

  • the present invention relates to a net-like body that can be used as a fence material installed on the boundary of a site or on the side of a road.
  • This mesh body can prevent beast harm and can prevent climbing of vines such as kuzu.
  • fences are installed at the boundary of the site and on the side of the road to prevent entry, to prevent crosswinds, to prevent snow damage, or to prevent wild animals from entering.
  • This fence has a structure in which a breathable shield is fixed between pillars or inside a frame.
  • Metal fences, metal panels with holes, and metal plates such as narrow metal plates arranged one above the other are used. Many are used. Since metal shielding materials are heavy and hard, the load of installation work is large, and there is a problem that rust is likely to occur along the coast, so it is desired to replace with a synthetic resin net. .
  • a typical synthetic resin net for example, there is an agricultural windproof insect net as described in Patent Document 1.
  • Such a net for agriculture is used for the purpose of insect prevention and bird prevention in house cultivation and tunnel cultivation, and because it is supposed to roll up and down to adjust the air volume, in Russell edition, etc.
  • Agricultural nets are not particularly required to have a high tensile strength. Rather, they are often installed with temporary thin columns, and there is a risk that the columns will fall or bend, so before the columns are collapsed, before they are folded. It can be said that it is preferable to be made with a low tensile strength so that the net is torn.
  • Fence shields are used for a long time and need to be sufficiently resistant to wind and snow, but such agricultural nets are too flexible and are subject to crosswinds. There is a drawback that the net swells greatly and the net protrudes greatly from the boundary of the site, and if snow falls on the net, the net will hang down due to the weight of the snow.
  • metal shields are often used as a shielding material, which has high tensile strength, and is not limited to preventing the invasion of wild animals such as deer and wild boars. Although there is a purpose to prevent this, such agricultural nets cannot be said to have sufficient tensile strength.
  • the mesh sheet for construction is a sheet that is used around the scaffolding of construction work to prevent harm such as falling objects.
  • the mesh sheet for construction is often woven with a texture to prevent the paint from scattering, and when a woven material with a texture like this is used as a shielding material, It is difficult to maintain air permeability because the eyes are clogged and the gap is lost.
  • Some fabrics have a large mesh (mesh), but it is not considered to harden the fabric. Rather, when it comes to the mesh sheet for construction, it is folded when the construction period is over, and another workshop is held. It is suitable to be flexible so that it can be easily installed even in a narrow work place, like a windproof insect net for agriculture, There is a problem such as swelling when subjected to a crosswind, which is not suitable for a shielding material.
  • fences installed on the side of the road or in idle areas should support other trees, not vine weeds such as scrap, yab pepper, hex pods, potatoes, etc.
  • Plants that extend their stems to high places (hereinafter referred to as “vine plants”) are prone to overgrowth with shielding materials, which obstruct road visibility and cause weeds to invade neighboring areas. In addition to the above-mentioned problems, it is also desired to deal with them.
  • the most commonly used method to prevent wild animals from entering farmlands, buildings, roads, etc. is to install fences and fences on the boundary.
  • the fence shielding material not only physically blocks intrusions, but also works to prevent the invasion of wild animals psychologically by working to prevent the animals from approaching artifacts based on alertness to humans.
  • Patent Document 3 As a technique for preventing climbing of vines on the boundary line of farmland, etc., a device for preventing grass from being provided with through holes and slits (Patent Document 3), a sheet for preventing vine winding provided with a light shielding sheet and a translucent sheet (Patent Document 4), there is a shift wrap prevention tool (Patent Document 5) made of a folded material and a sheet material.
  • Patent Document 3 The technique of Patent Document 3 is to easily exert a defense function by attaching a sheet material to a fence.
  • a fence including a shielding material such as a wire mesh and attaching a herbicidal sheet for preventing the extension of the vines on the fence arises, resulting in a large labor and cost burden. There is a problem.
  • Patent document 4 has an effect of preventing tangling of vines by a light-shielding sheet and a light-transmitting sheet, but is a sheet attached to a fence including a shielding material such as a wire net, as in patent document 1.
  • the burden of installation in a place where there is no existing fence is large.
  • Patent Document 5 is attached to a mesh fence in the same manner as Patent Document 1 and Patent Document 2 to prevent curling. Further, the second folded member attached to the fence together with the lower edge of the sheet material has an effect of preventing the upward movement of the shift near the ground. However, it is necessary to consider the size of the folding material and the installation position in order to prevent the second folding material from approaching the fence by going around from below and extending upward from the periphery to approach the fence. is there.
  • an object of the present invention is to supply a net having a certain mesh that can be sufficiently used as a fence shielding material and having sufficient hardness and strength. It is another object of the present invention to provide a net that prevents climbing of vine plants that can be installed independently and prevents animal damage.
  • a net-like body woven using monofilaments made of polyolefin resin for warp and weft yarns is formed by adjoining a plurality of the monofilaments in parallel.
  • a plurality of sets of vertical and horizontal adjacent yarn groups are intermittently arranged to form a shape having a plurality of openings of 4 to 100 mm 2 , and an intersection where the vertical and horizontal adjacent yarn groups intersect is joined integrally.
  • at least a part of the adjacent monofilaments in each of the adjacent yarn groups in the longitudinal or lateral direction are joined and integrated, and the tensile strength of the mesh body is 1,000 N / 5 cm or more in both longitudinal and lateral directions.
  • the network according to the present invention is a substitute for a conventional metal fence or the like, and is lightweight, but has high tensile strength and high hardness. Therefore, the material is a lightweight polyolefin resin, and the yarn used for the mesh is a monofilament having a large fine diameter (fiber diameter) per one.
  • a plurality of monofilaments were adjacently arranged in parallel to form a set of adjacent yarn groups, and at least a part of adjacent monofilaments in each vertical or horizontal adjacent yarn group was joined and integrated.
  • the monofilaments of the adjacent yarn group in the joined and integrated part have a shape in which the cut surface is formed of a plurality of balls.
  • the “part” may mean either a vertical adjacent yarn group or a horizontal adjacent yarn group, and may mean a certain range in the vertical adjacent yarn group or the horizontal adjacent yarn group, Sometimes it means both. Moreover, the case where both the vertical adjacent yarn group and the horizontal adjacent yarn group are meant is also included. “Ball” mainly refers to a circle, but also includes other shapes such as triangles and squares.
  • each opening is 4 to 100 mm 2 .
  • the intersections of the adjacent vertical yarn group and the adjacent horizontal yarn group are joined and integrated, and the tensile strength of the mesh body is 1,000 N / 5 cm or more in both the vertical and horizontal directions.
  • the names of “warp yarn” and “weft yarn” are not limited to “yarn that extends in the vertical direction” and “yarn that extends in the horizontal direction”, but are stretched with an inclination from the vertical direction or the horizontal direction. Yarn is also included.
  • a net-like body in which the monofilament is a monofilament having a core-sheath structure, and the melting point of the outer layer portion is lower than the melting point of the inner layer portion.
  • the melting point of the outer layer part and the melting point of the inner layer part have a difference of 10 degrees or more.
  • the inner layer portion has a higher strength than the outer layer portion.
  • a net-like body is provided in which the adjacent monofilaments in each adjacent yarn group are continuously joined and integrated in the longitudinal direction.
  • adjacent monofilaments in a set of adjacent yarn groups are continuously joined and integrated into a flat single yarn shape.
  • adjacent monofilaments in a set of adjacent yarn groups are similarly joined or integrated, or only partially joined or joined together. Although not excluded in either case, it is desirable that at least a part of them is joined and integrated. In any case, the intersecting points of the adjacent vertical yarn group and the adjacent horizontal yarn group are joined and integrated.
  • a reticulated body is provided.
  • the ups and downs of the other adjacent (horizontal or vertical) adjacent yarn groups are repeated at the intersection of the vertical adjacent yarn group and the horizontal adjacent yarn group.
  • the adjacent yarn group may be different in hardness from the adjacent adjacent yarn group.
  • the horizontal (or vertical) adjacent yarn group having relatively high rigidity maintains a straight shape, and the other adjacent yarn group easily bends, so that it intersects while rising and sinking to the adjacent yarn group having higher rigidity.
  • the adjacent yarn group having the mixed monofilament is the adjacent yarn group that intersects. It will be sandwiched from above and below.
  • the pattern of ups and downs refers to the order of floating (crossing above the intersecting adjacent yarn group) and sinking (crossing below the intersecting adjacent yarn group) or a plurality of sets of adjacent yarn groups where the monofilaments in the same adjacent yarn group intersect or It means the mode of pitch (interval). Some monofilaments in the same adjacent yarn group are raised and lowered in the reverse order to other monofilaments, and some monofilaments are repeatedly raised and lowered with respect to multiple sets of adjacent yarn groups, while other monofilaments are adjacent to a single set. When the ups and downs are repeated for the yarn group, the ups and downs patterns are different.
  • Some monofilaments of adjacent yarn groups cross with a single intersecting adjacent yarn group, intersect in a floating pattern, and the remaining monofilaments of the same adjacent yarn group sink and float with respect to a single intersecting adjacent yarn group When crossing in the reverse pattern of sinking, the crossing adjacent yarn groups is always sandwiched. The same applies to the case where the same number of intersecting adjacent yarn groups intersect in a reverse pattern.
  • adjacent monofilaments in the adjacent yarn group that is ups and downs are not continuously joined and integrated. Only a part of them may be joined or integrated, or they may not be joined and integrated.
  • a net-like body in which the part of the monofilaments repeats ups and downs over a plurality of sets of the other adjacent yarn groups.
  • Some monofilaments of adjacent yarn groups intersect with multiple intersecting adjacent yarn groups for example, in the pattern of float, float, float, sink, sink, sink, and the remaining monofilaments of the same adjacent yarn group are single intersecting adjacent
  • a mode that is positioned and a mode that is not so that is, a mode in which the crossing adjacent yarn groups are divided above and below are mixed, and a mode in which the crossing adjacent yarn groups are sandwiched between the upper and lower portions is sandwiched. It should be noted that although some monofilaments and the remaining monofilaments of the adjacent yarn group float and sink repeatedly with respect to a plurality of adjacent yarn groups that intersect, a plurality of different cases are mixed together.
  • a mesh body is provided in which the opening of the opening is 30 mm or less in both the vertical direction and the horizontal direction.
  • “Aperture” means the distance between yarns forming the opening and the dimension of the gap. “Opening in the vertical direction” represents a distance between yarns in the height direction (adjacent yarn group) in a state where the mesh body is installed.
  • a mesh body is provided in which the opening of the opening is 4 mm or less in both the vertical direction and the horizontal direction.
  • a mesh-like body is provided in which the opening in the vertical direction of the opening is 3 mm or less.
  • a net-like body in which the shape of the opening is a rectangle, the top-to-bottom opening is 3 mm or less, and the left-to-right opening is 4 mm or less.
  • the rectangle includes a square.
  • a mesh body comprising a prevention plate on the outer surface of the mesh body, the prevention plate having a depth of 50 cm or more.
  • the prevention plate prevents access to the nets of animals and surrounding vines by ensuring a certain depth.
  • the prevention plate is joined to the net according to the present invention in a manner of being in contact with the substantially T-shape.
  • the depth of the prevention plate that is, the distance from the joint portion with the mesh body to the opposite outer portion is set to 50 cm or more.
  • the shape of a prevention board is not specifically limited, The shape which can be installed in the form along a mesh body with a fixed depth is preferable.
  • the material of the prevention plate is not particularly limited, but in order to prevent the vine plant from traveling up the upper part of the prevention plate and approaching the net-like body, the vine plant does not have a catch to stretch. A flat, smooth material without gaps or a fine mesh material is preferred.
  • the prevention plate is joined to the mesh body in a manner protruding from the outer surface of the mesh body, and the depth dimension is sufficiently secured, the load burden on the joint portion is large. Larger loads are applied when the weather is strong. In order to be lightweight and less susceptible to wind, it is preferable that the prevention plate be made of the same material as the mesh.
  • a mesh body characterized in that the prevention plate is joined to the mesh body at a distance from the ground, and the height of at least a part of the prevention plate is 1 m or more from the ground.
  • It may be installed in a substantially horizontal state while maintaining a height of 1 m or more from the ground, or may be installed in an inclined manner on the mesh body side or the outer side.
  • a mesh body characterized in that the height of the joint between the prevention plate and the mesh body is 1 m or more from the ground, and the height of the outer portion is 20 cm or less.
  • the shape of the prevention plate from the junction with the mesh body to the outer side is not particularly limited. It may be inclined at the same angle, or may be a polygonal line shape that drops substantially sharply after being kept substantially horizontal, or a combination shape of a linear shape and a curved shape.
  • the polyolefin resin is used as a raw material, a high tensile force can be maintained even if there is some unevenness in the length of the yarn when it becomes a net-like body.
  • the high strength and high rigidity of the mesh can be ensured by using monofilaments for the yarn.
  • a plurality of monofilaments are adjacently arranged in parallel to form a set of adjacent yarn groups, and at least a part of adjacent monofilaments in each adjacent yarn group is joined and integrated, thereby integrating adjacent yarn groups.
  • the formed portion becomes like a flat single thread, and it is possible to obtain high strength and high rigidity and to stabilize the shape of the net-like body.
  • the intersection of the vertical adjacent yarn group and the horizontal adjacent yarn group is joined and integrated, thereby improving the strength by integrating the entire mesh body and the shape of the opening formed by the vertical and horizontal adjacent yarn groups. Changes in size and shape can be prevented. Further, by setting the size of the opening to 100 mm 2 or less, it is possible to maintain the strength of the entire reticulate body and to prevent deflection due to strong winds and snow. Similarly, when the thickness is 4 mm 2 or more, the eyes are not clogged with dust. Moreover, the high strength property of the network based on the structure of this invention can be ensured by making the tensile strength of a network into 1000 N / 5cm or more in both length and width. As described above, the net-like body according to the present invention has high tensile strength, is hard and is not easily deformed, and can sufficiently withstand even when used as a fence shielding material.
  • the monofilament has a core-sheath structure and the inner layer portion is made of a material having a higher melting point than the outer layer portion, when the monofilaments are thermally bonded to each other, it is possible to prevent damage to the strength of the inner layer portion due to thermal bonding.
  • the adjacent monofilaments in the adjacent yarn group are continuously joined and integrated in the longitudinal direction, the monofilaments in the adjacent yarn group are completely integrated. As a result, a net having a higher strength and higher rigidity is obtained.
  • the monofilament with a strong tension of the surrounding yarn approaches the monofilament having a large number of straddles, that is, the yarn that is not easily stretched, and the integration between the monofilaments is promoted, and the size of the opening is increased. Is ensured to be constant.
  • the opening of the opening By making the opening of the opening not more than a certain size, it is possible to prevent damage to the mesh body due to the mouth of the wild animal entering the opening.
  • the windbreak effect can be exhibited by adjusting the mesh opening of the mesh according to the present invention.
  • As a theoretical windproof effect it is possible to reduce the wind speed by about 75% if the aperture is 1 mm, about 50% if the aperture is 2 mm, and 25% if the aperture is 4 mm.
  • the smaller the mesh opening the better the windproof effect.
  • the smaller the mesh size the stronger the wind resistance and the greater the strength of the mesh body, and the higher the risk of clogging with dust. Therefore, by setting the mesh size to 4 mm, it is possible to expect an effective windproof effect within a range where the strength burden is not too strong and the risk of clogging is small.
  • the vine plant stretches upward, it is important not to provide the sheet with a portion that wraps around the tip of the vine plant or that acts as a scaffold.
  • the opening in the top-to-bottom direction By setting the opening in the top-to-bottom direction to 3 mm or less, it is possible to eliminate room for winding and handling for extending upward.
  • seat which concerns on this invention has sufficient tensile strength, it is possible to install easily the sheet
  • the vine plant rooted under the return plate goes around the return plate and approaches the mesh body, or the vine plant rooted outside the return plate crosses the upper side of the return plate and crosses the mesh body. There is a risk of approaching. By securing a depth of 50 cm or more, it is possible to prevent these vines from approaching the mesh body. It also prevents wild animals from approaching and hinders attempts to jump over the mesh.
  • the point of the protective fence against wild animals is that you cannot think that you can jump over.
  • the return plate with a height of 1 m or more from the ground is located at the same height as the line of sight or above the line of sight, so it becomes a sufficient obstacle to make it impossible to think that it can jump into wild animals, and attempts to jump over the mesh sheet Can be blocked. Therefore, the situation where a deer or a wild boar steps on a return plate and destroys it can be prevented.
  • the prevention plate is made of the same material as the mesh body, such as a material with voids, if the plant touches the ground and lays, the tip will pass through the net when the plant germinates, and the opening will be spread or destroyed. There is a risk of growing from there and stretching. Even when the opening is not spread out, if the buds of the plants come out from the mesh, they may become a foothold for the vine plant that goes around from the outside and approaches the mesh. If the prevention plate is placed away from the ground, the plant must extend upward without a foothold in order to approach the prevention plate.
  • FIG. 1 is an overall view of an installed mesh according to the present invention. It is a figure of the upper part of the mesh body installed in the slope concerning this invention. It is a figure from the horizontal direction of the installed mesh body which concerns on this invention. It is an enlarged view of the net-like body installed on the slope according to the present invention. It is a side surface conceptual diagram of the mesh body provided with the prevention board which concerns on this invention. It is a front conceptual diagram of the net-like body provided with the prevention board concerning the present invention. It is a side surface conceptual diagram of another aspect of the net-like body provided with the prevention board which concerns on this invention.
  • the network of the present invention is made of a woven fabric using monofilaments made of polyolefin resin for warp and weft.
  • the yarn itself needs to have high strength and hardness in order to give the fabric high tensile strength and hardness. Therefore, in the present invention, monofilaments having a large fine diameter per one are used as the yarn of the woven fabric.
  • the monofilament is a single yarn-like yarn obtained by drawing a resin extruded from a circular or irregular nozzle.
  • This yarn can also have a core-sheath structure in which different resin components are used in the inner layer and the outer layer by co-extrusion during the extrusion process.
  • a polyolefin resin is used for the monofilament in order to make the woven fabric lightweight and to have high tensile strength and hardness.
  • the polyolefin resin polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-alkyl acrylate copolymer, ethylene-propylene random copolymer, etc. may be used singly or in combination.
  • those mainly composed of polypropylene or high-density polyethylene are preferred. From the viewpoint of excellent weather resistance and hardly causing property changes even in winter, those mainly composed of high-density polyethylene having a low glass transition point. Is more preferable.
  • the reason why the polyolefin resin is used in the present invention is one of the reasons that the specific gravity is light among the general-purpose resins, but another reason for using the polyolefin resin in the present invention is that the polyolefin monofilament pulls the yarn.
  • the material after elongating the elongation at which the tensile strength becomes maximum, the material has a characteristic of continuing to grow and breaking while maintaining the tensile strength. Polyester monofilaments commonly used as fibers break when a yarn is pulled, when the elongation reaches a maximum tensile strength.
  • a monofilament with a core-sheath structure is adopted. Is preferred.
  • a monofilament having a core-sheath structure by disposing a polyolefin resin having a melting point lower than that of the inner layer in the outer layer, only the outer layer can be melted and the yarns can be thermally bonded without impairing the strength of the yarn.
  • the inner layer it is preferable to use polypropylene or high-density polyethylene that can easily obtain high strength.
  • the inner layer and the outer layer need to be sufficiently bonded.
  • the surface layer is more preferably made of the polyethylene raw material.
  • a difference in melting point between the outer layer and the inner layer may be at least 10 ° C.
  • the surface layer is preferably made of low-density polyethylene.
  • the monofilament of the present invention can be selected to have a circular shape or a modified cross-sectional shape depending on the shape of the nozzle, but a circular cross-sectional shape is preferable to a modified cross-sectional shape.
  • the reason why the monofilament having a circular cross section is preferable is that it has a shape that is easy to stretch and that strength is easily obtained, and that the yarn is not easily twisted when it is made into a woven fabric. For example, when weaving with a thread with a flat cross-section, there will be places where the yarn is twisted during the weaving process, but if the yarn is twisted, the twisted portion of the yarn will be easily cut and the expected strength will be achieved. In addition, it is difficult to bond the yarn around the twisted portion, so that it is difficult to bond even when trying to join and integrate.
  • the fineness of the monofilament of the present invention is not particularly limited, and it can be said that the larger one is stronger and harder per yarn, but considering the ease of weaving, it is preferably in the range of 500 dt to 2,500 dt. More preferably, it is in the range of 800 dt to 2,000 dt.
  • the strength of the monofilament of the present invention is not particularly limited, but it can be said that a higher one is preferable. However, in order to obtain high strength, it is necessary to stretch at a large stretch ratio. If stretched excessively, the elongation is impaired, and if the scratch has entered, it becomes easy to cut, and if the elongation is extremely small, the fabric In this case, the load becomes weak against an unbalanced load, and the yarn breaks apart due to uneven length of the yarn, making it difficult to obtain high tensile strength as a woven fabric.
  • the monofilament strength is preferably 4 to 15 cN / dt, and the elongation at break of the monofilament is in the range of 8 to 30%. It is preferable.
  • the monofilament obtained as described above is woven into a mesh using warp and weft.
  • the warp yarn and the weft yarn are woven by arranging a plurality of monofilaments adjacent to each other in parallel to form an adjacent yarn group, and arranging a plurality of sets of adjacent yarn groups intermittently.
  • the adjacent yarn group of the present invention is a yarn group in which a plurality of monofilaments are arranged side by side when the fabric is viewed from the plane, that is, in a state adjacent to each other in parallel. .
  • a plurality of monofilaments are gathered, so that even if the fineness of each monofilament is not so large, the woven fabric is strong and difficult to break.
  • a method of using a twisted yarn in which a plurality of monofilaments are pre-twisted can be considered if only a plurality of filaments are assembled.
  • individual monofilaments are arranged in a spirally twisted state.
  • the outer layers are thermally bonded to each other.
  • the contacts of each other are joined and integrated.
  • the adjacent yarn group since the adjacent yarn group is used, at least a part of not only the intersection of the warp yarn and the weft yarn but also the monofilaments adjacent to each other in the adjacent yarn group are bonded. This stabilizes the mesh shape and makes the mesh body harder than bonding only the intersections.
  • the woven structure is not particularly limited, but it is preferable that the adjacent filament groups in at least one of the warp and the weft all repeat the same ups and downs of the monofilaments in one set.
  • this adjacent yarn group is referred to as a “drawing adjacent yarn group”.
  • the adjacent yarn group by using the adjacent yarn group, unevenness in length of individual yarns can be suppressed, but the fabric of the present invention floats and sinks across the monofilament. For this reason, the lengths of the individual yarns are likely to be uneven, and the strength of the individual yarns is likely to be uneven.
  • the drawing adjacent yarn group is used, the individual monofilaments in one set of the drawing adjacent yarn group have almost no yarn length unevenness due to ups and downs. Therefore, the tensile properties of individual monofilaments can be fully reflected in the fabric.
  • the outer layer of individual monofilaments of the assembling adjacent yarn group is melted using a monofilament having a core-sheath structure in which a polyolefin resin having a melting point lower than that of the inner layer is disposed on the outer layer, the outer layers are thermally bonded to each other, and the monofilaments are elongated. Join and integrate continuously in the direction.
  • a set of assembling adjacent yarn groups looks like a single flat yarn, which not only exhibits high strength but also becomes very hard.
  • the adjacent yarn group intersecting in the vertical direction repeats ups and downs across the contiguous adjacent yarn group.
  • the contiguous adjacent yarn group may be used for both warp and weft yarns, but in order to make the mesh body more difficult to deform, the contiguous adjacent yarn group is employed for only one of the warp yarn or the weft yarn, In the adjacent yarn group intersecting in the vertical direction, it is preferable that monofilaments having different ups and downs are mixed in the adjacent yarn group.
  • this adjacent yarn group is referred to as a “neighboring adjacent yarn group”.
  • This sandwiched adjacent yarn group is a mixture of monofilaments with different ups and downs, so that a set of sandwiched adjacent yarn groups positioned in the vertical direction is sandwiched. Since it will be pinched in the adjacent thread group and the contiguous adjacent thread group will be strongly constrained structurally, the mesh will be less likely to shift. In particular, it is preferable that monofilaments that repeat ups and downs are mixed in the sandwiched adjacent yarn group across a plurality of assembling adjacent yarn groups.
  • the shape of the opening can be kept stronger.
  • a monofilament with a large number of straddles in the same adjacent yarn group has a smaller number of repeated ups and downs, so that the yarn is slightly more difficult to tension, and thus more easily protrudes on the surface of the mesh body than a monofilament with a small number of straddles.
  • a convex shape is formed.
  • the monofilament with a large number of sets straddling the central part of the same adjacent yarn group is arranged, and a monofilament with a small number of sets straddling both sides of the circumference is arranged, the monofilament with a large number of sets straddling is supported by the monofilaments on both sides. It surely protrudes to the surface of the mesh body.
  • the monofilaments on both sides of the surroundings are made to rise and fall at the same period.
  • the approach between the warps or wefts is hindered by the intersecting yarns, and the yarns get closer to each other as the yarns become harder
  • it becomes difficult if you place a monofilament with a large number of pairs straddling the central part of the same adjacent yarn group, and arrange a monofilament with a few pairs straddling while floating up and down at the same period on both sides, the central part where the yarn is difficult to stretch Since the monofilaments with strong tension of the yarns arranged on both sides of the monofilament are closer to the monofilament, integration between the monofilaments is promoted, and the size of the opening is kept constant.
  • the middle monofilament pushes up the yarn on both sides to maintain the tension of the monofilament in the middle, so that the ten
  • the sandwiched adjacent yarn group is more flexible than the draw adjacent yarn group, if the ups and downs are straddled across the hard draw adjacent yarn group, the ups and downs of the sandwich adjacent yarn group will increase, but conversely The undulations in the adjacent yarn group are extremely small. The smaller the undulation difference is, the more the individual yarn is pulled linearly, so that the tensile characteristics of the individual yarn are fully exhibited and the shape is stabilized.
  • the yarn is arranged in a straight line, specializing in either the warp or the weft, which makes it possible to stabilize the shape, so that the mesh body is more difficult to bend, and the uneven load is also reduced. As it becomes stronger, it becomes a more advantageous structure for those that are required to withstand various loads over a long period of time, such as fence shielding materials.
  • the adjacent yarn group of warp or weft is a sandwiched adjacent yarn group, and the adjacent yarn group in the vertical direction is the ascending adjacent yarn group, it becomes slippery along the sandwiched adjacent yarn group due to the vertical and horizontal undulation difference, Scratches due to friction are less likely to occur on the body.
  • the effect becomes more remarkable by forming the convex shape clearly.
  • This vertical and horizontal undulation difference can also cause a turbulent flow in the vicinity of the mesh body and disappear the wind in the vicinity of the mesh body when the mesh body is used as a fence shielding material and receives a cross wind.
  • a monofilament having a core-sheath structure in which a polyolefin resin having a melting point lower than that of the inner layer is disposed in the outer layer, and the adjacent yarn group of the warp yarn or the weft yarn is floated across a plurality of adjacent yarn groups in the vertical direction.
  • the monofilament which repeats is mixed and the adjacent yarn group in the vertical direction preferably has a structure in which the monofilaments are continuously bonded and integrated in the longitudinal direction.
  • the interval between adjacent adjacent yarn groups is set in consideration of the area of the gap.
  • the one where the area of the gap per one is 4 to 100 mm 2 is included. If the area of the gap is less than 4 mm 2 , the eyes will be clogged with dust. Conversely, if the area exceeds 100 mm 2 , the mesh will tend to be soft and the tensile strength will be difficult to obtain, and it will be used as a fence shielding material. If it does, the effect of blocking wind and snow will also fade.
  • the present invention is used as a shielding material for fences, it is desirable to consider the prevention of overgrowth of climbing weeds such as kudzu, yabgarashi, hexopods, and potatoes. Since the vine passes through and climbs by climbing, it is particularly preferable that the area of the voids in the mesh is 50 mm 2 or less.
  • the interval between adjacent adjacent yarn groups in the present invention is preferably in the range of 1 to 20 mm.
  • the porosity of the network according to the present invention is preferably 30 to 60%.
  • the width of the adjacent yarn group and the number of monofilaments in the adjacent yarn group are comprehensively determined in consideration of the area of the void and the void ratio.
  • the width of one set of adjacent yarn groups is preferably 0.8 to 3.0 mm, monofilaments having a fine diameter of 0.3 to 0.6 mm are used, and one set of adjacent yarn groups is 2 to 10, more preferably 3 It is preferable that it is composed of 6 pieces.
  • the structure is more likely to be loaded on the adjacent adjacent yarn group than the adjacent adjacent yarn group.
  • the adjacent yarn group preferably has a larger number of monofilaments in one set.
  • the reticulate obtained as described above has a high tensile strength of 1,000 N / 5 cm or more in both length and width, and can be set to 1,500 N / 5 cm or more. Although it is possible to give the network a higher tensile strength by using a monofilament with a higher tensile strength, considering that it is necessary to give the monofilament an extension, 8 It is preferable to keep it up to about 1,000 N / 5 cm.
  • the tensile elongation of the network of the present invention is not particularly limited, but the maximum point elongation is preferably in the range of 15 to 35%. Considering the resistance against the uneven load, it is preferable that the elongation at break is 5% to 20% higher than the maximum elongation in one longitudinal or lateral direction.
  • the net obtained as described above has not only high tensile strength but also is hard and hardly deformed. For this reason, even when used as a fence shielding material, it is difficult to bend due to wind or snow.
  • the mesh is firmly fixed and the voids of the mesh are difficult to spread, it is also possible to prevent vine weeds from growing while deforming the mesh to widen the voids.
  • the effect of preventing the overgrowth of vines by the net of the present invention is not limited to preventing climbing of the shielding material when used as a shielding material for fences, and the net of the present invention is used as a weed overgrowth prevention material.
  • the slope of the roadside is covered with the mesh body of the present invention, even if a vine plant grows on the slope, the vine can be prevented from extending through the mesh of the mesh body, and its overgrowth can be prevented. Can do.
  • the slope is covered with the reticulate body of the present invention, the mesh is maintained, it is water-permeable and suppresses the growth of the vines, but does not wither the weeds containing the vines.
  • the soil can be stabilized, the slope can be prevented from collapsing, and as a result, the landslide can be effectively prevented.
  • Wild animals are instinctively alert to humans and are usually as close as possible to humans and human-made artifacts.
  • a fence covered with a vine plant loses its appearance as an artificial object, and the animal's alertness fades, causing the animal to approach and break through.
  • a monofilament 2 having a core-sheath structure using high-density polyethylene (density 0.95 kg / m 3 , melting point 131 ° C.) as an inner layer and low-density polyethylene (density 0.920 kg / m 3 , melting point 118 ° C.) as an outer layer was prepared.
  • This core-sheath monofilament 2 had a circular cross section, and had a fineness of 1,350 dt, a fine diameter of 0.4 mm, a strength of 4.5 cN / dt, and an elongation of 18%.
  • the above-mentioned monofilament 2 is commonly used for warp and weft, and after weaving, it is heat-melted with a heating plate, the outer layer portion of the monofilament 2 having a core-sheath structure is melted, and the contacts of the monofilaments 2 are bonded and integrated.
  • the body 1 is shown in FIG.
  • the warp yarn of FIG. 1 is composed of a set of three adjacent yarn groups 3 to form a sandwiched adjacent yarn group 3b, and the weft yarn is composed of a set of four adjacent yarn groups 3 to form a draw adjacent yarn group 3a. ing.
  • the warp yarn adjacent adjacent yarn group 3b is arranged so that the wide interval L1 and the narrow interval L2 are alternately repeated.
  • the interval L1 is about 3.8 mm, and the interval L2 is about 1.0 mm.
  • the weft yarn assembling adjacent yarn group 3a is arranged with a constant interval L, and the interval L is arranged at an interval of about 3.8 mm.
  • interval between warp yarns a wide space
  • two of the three monofilaments 2 forming the adjacent yarn group 3b of the warp yarn in FIG. 1 repeat ups and downs alternately with respect to the adjacent yarn group 3a of the weft yarn.
  • one of the three monofilaments 2 forming the adjacent yarn group 3b straddles three sets of weft yarn adjacent adjacent yarn groups 3a and repeats ups and downs alternately.
  • the yarn group 3a has a woven structure that repeats ups and downs alternately with respect to the adjacent yarn group 3b between which the warp is sandwiched.
  • the warp is a portion where the ups and downs in the adjacent yarn group 3 coincide with each other, and the weft is adjacent to the adjacent yarn group 3 in the longitudinal direction. Bonded and integrated.
  • the mesh body 1 shown in FIG. 1 has a porosity of 42% and has a gap of 14.4 mm 2 .
  • the tensile strength was 2,100 N / 5 cm and the maximum point elongation was 27%.
  • the elongation at break was 29% in the longitudinal direction and 39% in the transverse direction.
  • FIG. 4 (A and B) and FIG. 5 (A and B) are observed on November 14 of the same year, about 7 months after the network according to the present invention was installed in the vicinity of Akita Minami IC in April H28.
  • FIG. The dimensions of the mesh are the same as in FIG.
  • FIG. 4A is an overall view in which the net according to the present invention is installed upright inside the fence and installed along the slope.
  • FIG. 4B is an enlarged view of the vicinity of the upper part of the mesh. Although many kudzu are developed in the upper part of FIG. 4B, it does not hang down on the net-like body below.
  • FIG. 5A is a view of the installed mesh according to the present invention as seen from the side.
  • FIG. 5B is a view of the net-like body stretched on the slope as seen from above. As shown in FIG. 5B, no kuzu climbing from the ground is found, and the net remains in the installed state.
  • the tip of the kudzu existing below the mesh body penetrates the opening of the mesh body, it becomes a foothold for the kudzu that crawls up from the ground, and assists the climbing of the kudzu.
  • the tip of the kudzu does not penetrate through the opening and is pressed below the mesh.
  • the opening of the top and bottom and the left and right openings is about 4 mm, it is effective in suppressing the growth of debris. Moreover, by making the net of the same size, as described above, it is possible to have an effective windproof effect that reduces the wind speed by 25% within a range where the strength burden is not too strong.
  • a net with an opening in the vertical direction of 3 mm is more preferable.
  • the opening in the left-right direction is not limited as in the vertical direction from the viewpoint of preventing climbing.
  • the lateral opening is 4 mm or less. More preferably it is.
  • FIG. 6A is a side view of a mesh body according to the present invention provided with a prevention plate
  • FIG. 6B is a front view thereof.
  • the prevention plate is made of the same material as that of the mesh body, and has openings of 3 mm in the vertical direction and 4 mm in the horizontal direction.
  • the junction between the prevention plate and the net has a height of 1 meter, and a vine plant that has grown in the middle of the net cannot reach the upper prevention plate. Even if the prevention plate is damaged and a hole is formed, a vine plant cannot enter or protrude from the tip. Also, since the depth is 1 meter, it is not possible to go around and climb from the top of the prevention plate.
  • These drawings conceptually represent the shape of the mesh body according to the present invention, and do not accurately represent actual dimensions, dimensional ratios, and the like.
  • the prevention plate is inclined outward from the mesh body, and the height of the outer end is 20 cm. Wild animals, especially wild boars, sometimes dig underground such as fences to break through obstacles such as fences. When a vine plant climbs a fence etc. and the appearance as an artificial object fades into the fence etc., it is more remarkable, but even if it is a net according to the present invention, various plants are prospering around There is a risk of digging the underground of the reticulated body approaching. In such a case, in order to prevent the approach of wild boar or the like, it is effective to lower the outer portion of the prevention plate to prevent further approach of the wild boar or the like.
  • the prevention plate moves away from the mesh body, the height of the prevention plate becomes lower, and there is a possibility that the vine plant directly underneath will reach the prevention plate.
  • the prevention plate has an opening of 3 mm in the vertical direction and 4 mm in the horizontal direction. If so, the tip of the vine plant will not penetrate the opening.
  • the height of the prevention plate is at least 1 meter over a depth of 50 cm or more.
  • the prevention plate is not inclined linearly, but is maintained at a level of 50 cm or more, and then is abruptly inclined.
  • the present invention has industrial applicability as a shield for replacing metal fences, as a net for preventing climbing of vines, and as a net for preventing animal damage caused by wild animals.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Birds (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Fencing (AREA)
  • Woven Fabrics (AREA)
  • Catching Or Destruction (AREA)

Abstract

La présente invention concerne un corps de type filet qui assure un motif de maille uniforme permettant au corps de type filet d'être utilisé de manière adéquate en tant que matériau de barrière pour des clôtures et qui présente une dureté et une résistance adéquates, et qui est apte à être installé de manière indépendante et à empêcher l'escalade de vignes et les dommages causés par un animal. L'invention concerne plus précisément un corps de type filet qui est obtenu par tissage de monofilaments de chaîne et de trame en résine de polyoléfine. Une pluralité de groupes de chaîne et de trame adjacents, chacun étant formé en plaçant de manière adjacente une pluralité de monofilaments en parallèle les uns avec les autres, sont disposés de manière intermittente de façon à former une configuration qui présente une pluralité d'ouvertures de 4 à 100 mm2 ; les intersections auxquelles les groupes de chaîne et de trame adjacents se croisent les uns les autres sont chacune intégrées par liaison ; au moins certains des monofilaments adjacents dans chaque groupe de chaîne et de trame adjacent sont intégrés par liaison ; et le corps de type filet a une résistance à la traction d'au moins 1 000 N/5 cm dans les directions de chaîne et de trame.
PCT/JP2018/015630 2017-04-29 2018-04-14 Corps de type filet WO2018198843A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023072781A (ja) * 2021-11-15 2023-05-25 小泉製麻株式会社 つる性植物登はん防止用シートネット

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035833A1 (fr) * 1995-05-12 1996-11-14 The Tensar Corporation Textiles structuraux composites colles a grandes mailles
JP2000106766A (ja) * 1998-10-01 2000-04-18 Araki Mayumi 動物よけ網状体
JP2002220766A (ja) * 2001-01-18 2002-08-09 Chisso Corp 熱可塑性樹脂ネット
JP2004183195A (ja) * 2002-11-18 2004-07-02 Toyobo Co Ltd 平織りネット
JP2007068692A (ja) * 2005-09-06 2007-03-22 Fujitekku Kk カーテン芯材とカーテン

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035833A1 (fr) * 1995-05-12 1996-11-14 The Tensar Corporation Textiles structuraux composites colles a grandes mailles
JP2000106766A (ja) * 1998-10-01 2000-04-18 Araki Mayumi 動物よけ網状体
JP2002220766A (ja) * 2001-01-18 2002-08-09 Chisso Corp 熱可塑性樹脂ネット
JP2004183195A (ja) * 2002-11-18 2004-07-02 Toyobo Co Ltd 平織りネット
JP2007068692A (ja) * 2005-09-06 2007-03-22 Fujitekku Kk カーテン芯材とカーテン

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023072781A (ja) * 2021-11-15 2023-05-25 小泉製麻株式会社 つる性植物登はん防止用シートネット
JP7448968B2 (ja) 2021-11-15 2024-03-13 小泉製麻株式会社 つる性植物登はん防止用シートネット

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