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WO1996000651A1 - Method and apparatus for forming a packing box - Google Patents

Method and apparatus for forming a packing box Download PDF

Info

Publication number
WO1996000651A1
WO1996000651A1 PCT/KR1995/000085 KR9500085W WO9600651A1 WO 1996000651 A1 WO1996000651 A1 WO 1996000651A1 KR 9500085 W KR9500085 W KR 9500085W WO 9600651 A1 WO9600651 A1 WO 9600651A1
Authority
WO
WIPO (PCT)
Prior art keywords
inlet
moisture
master sheet
adhesive
resistant band
Prior art date
Application number
PCT/KR1995/000085
Other languages
French (fr)
Inventor
Do Wook Kim
Original Assignee
Daeyoung Packing Co., Ltd.
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.)
Filing date
Publication date
Application filed by Daeyoung Packing Co., Ltd. filed Critical Daeyoung Packing Co., Ltd.
Priority to AU29371/95A priority Critical patent/AU2937195A/en
Publication of WO1996000651A1 publication Critical patent/WO1996000651A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B65D5/5405—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form
    • B65D5/542—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in the container body
    • B65D5/5425—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in the container body and defining after rupture a lid hinged to the upper edge of the container body
    • B65D5/543—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing for opening containers formed by erecting a blank in tubular form the lines of weakness being provided in the container body and defining after rupture a lid hinged to the upper edge of the container body the container being provided with an internal frame or the like for maintaining the lid in the closed position by friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4279—Joints, seams, leakproof joints or corners, special connections between panels
    • B65D5/4283—Connections formed by separate elements, e.g. clips, bands, straps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings

Definitions

  • the present invention relates to a method and an apparatus for forming a packing box. More particularly, the present invention relates to a method and an apparatus for forming a packing box with a strip-shaped moisture resistant band which functions to prevent contents from being leaked out of the box even when the packing box is partially deformed due to careless handling while the box is transported or stored.
  • packing boxes are required to be impact- resistant, durable, and watertight, since it is very important to preserve their contents such as a solid detergent and the like as their original state while the contents are consumed or the packed products are being in circulation. If a packing box failed to have properties as mentioned above, it encounters several problems. For example, since the solid detergent packed in the box is in the form of fine particles, it may be easily agglomerated upon contact with air or moisture which may leak into the box. Also, the packing box is apt to be damaged at its corner or edge by an impact possibly applied thereto from outside during transportation or in circulation, thereby its contents may leak through a hole or a gap formed due to the damage.
  • a conventional packing box is integrally formed at its upper portion with a tear tape portion so as to make the box be easily opened.
  • the tear tape portion is defined at the upper portion of the vertical wall member of the box by perforated lines, outer air or humidity may be penetrated into the box through the perforated lines, thereby accelerating the agglomeration of the solid detergent packed in the box.
  • the packing box is provided at its inner surface with an inlet such that the inlet covers the tear tape portion in order to improve its durability and prevent penetration of air.
  • the inlet is made by preparing a cardboard having four main walls and three subsidiary walls, and folding the subsidiary walls inward.
  • the box is unnecessarily increased in weight and additional procedures for fixing the inlet are required, thereby lowering productivity.
  • a multiple reinforcing member for providing a packing box which is more firm, and several types of moisture resistant structure are disclosed.
  • this paper box increases manufacturing cost and weight due to the provision of the additional member.
  • the dimension of the additional member does not coincide with that of the paper box, it can not accomplish its intended purpose, and thereby making the expensive material useless and the box deteriorated.
  • rivets and a vinyl envelope for enclosing the detergent are necessary for the hand strap attached to the packing box, and the rivets and the vinyl envelope are made of material causing the environmental pollution. Therefore, the value of the box can be greatly damaged due to the environmental problem caused by use of such a material.
  • an object of the present invention is to provide an apparatus for forming a packing box which has enhanced durability and watertightness.
  • Another object of the present invention is to provide a method for forming a packing box which has enhanced durability and watertightness.
  • Another object of the present invention is to provide a high value-added packing box which does not incorporate a foreign material causing environmental pollution but is made from reproducible paper so that the box can be perfectly reused.
  • the present invention provides a method for forming a packing box, the method comprising the steps of: coating a printed paper and combining the coated paper with a cardboard, so as to make a master sheet; cutting the master sheet to have a predetermined size and shape, and then defining folding portions and forming perforated lines on the master sheet; applying adhesive in a strip shape on the master sheet; supplying an inlet and a moisture-resistant band having been cut to a predetermined length onto the adhesive in such a manner to be in precise alignment with the adhesive, and then attaching the inlet and the moisture-resistant band on the adhesive; attaching a paper strap on a flap member of the master sheet; and attaching together corners of the master sheet having the moisture-resistant band attached thereon, so as to form a packing box.
  • the step of attaching the paper strap on the flap member of the master sheet and the step of attaching the inlet and the moisture-resistant band on the adhesive by supplying the inlet and the moisture-resistant band onto the adhesive with the inlet and the moisture-resistant band being in precise alignment with the adhesive are performed in a single step.
  • the method further comprises a step of attaching a tear tape on an inner upper portion of the master sheet having been formed to a box shape, so that a lid part is produced when the tear tape is peeled off.
  • a device for forming a packing box comprising: a means for continuously supplying a master sheet having a predetermined shape; a die cutter for cutting the supplied master sheet into a predetermined box shape; a first and a second conveyer belts for conveying the box-shaped master sheet at a constant speed, the first and the second conveyer belts being disposed in close contact with an upper surface of a base; a means for applying adhesive with a constant width on a surface of the master sheet, the adhesive applying means being disposed above the second conveyer belt; a plurality of winding rollers and a plurality of guide rollers for winding an inlet and a moisture-resistant band thereon, the inlet and the moisture-resistant band with a predetermined length being supplied onto the adhesive applied on the master sheet; a drum-shaped cutter for cutting the inlet and the moisture-resistant band respectively to a predetermined length, the inlet and the moisture-resistant band being extended out from the guide rollers; and a suction
  • the drum-shaped cutter for cutting the inlet and the moisture-resistant band respectively to a predetermined length comprises at least two adjacent cutters having different diameters each other.
  • the device further comprises a means for supplying a paper strap, the paper strap supplying means being disposed outside the suction cylinder in close contact with the cutter.
  • the device further comprises a cut-out portion forming cutter for selectively cutting a lower edge of the inlet, the cut-out portion forming cutter being disposed above the guide roller.
  • the device further comprises a squeeze roller for firmly attaching the inlet and the moisture-resistant band on the master sheet, the squeeze roller being disposed outside the suction cylinder.
  • the adhesive applying means comprises a plurality of nozzles aligned in a line, and thereby the width of the adhesive can be optionally controlled by selectively opening a part of the nozzles.
  • the adhesive applying means comprises a cylindrical drum, the cylindrical drum having an immersed roller immersed in an adhesive storage tank, and a transfer roller cooperating with the immersed roller, the transfer roller being in contact with the immersed roller and the supplied master sheet.
  • FIG. 1 is a flow chart schematically illustrating the packing box forming procedure in accordance with an embodiment of the present invention
  • FIG. 2 is a front view illustrating the whole structure of a packing box forming apparatus in accordance with an embodiment of the present invention
  • FIG. 3 is a perspective view of an suction cylinder used in the packing box forming apparatus, illustrating a moisture-resistant band and an inlet sucked thereon;
  • FIG. 4 is a development view of a packing box having the moisture-resistant band and the inlet in accordance with the present invention.
  • FIG. 1 is a flow chart schematically illustrating the packing box forming procedure in accordance with an embodiment of the present invention.
  • the apparatus includes a master sheet supplying device 10 which continuously supplies a master sheet P treated to a desired shape.
  • the master sheet P supplied through the master sheet supplying device 10 is conveyed in a constant velocity along a first conveyor belt 21 which is installed in the upper end of a base 20.
  • the master sheet P is cut into a predetermined shape of box, by a die cutter 22 which is provided above the first conveyor belt 21.
  • the first conveyor belt 21 is supported by a pair of guide rollers 23 and 24 disposed in opposite relation each other, the tension of the first conveyor belt 21 is maintained by a tensioner 25 installed between the pair of guide rollers 23 and 24.
  • a second conveyor belt 26 is provided on the left side of the first conveyor belt 21.
  • An adhesive applying device 27 is positioned above the second conveyor belt 26 for applying adhesive having a constant width onto the surface of the master sheet P.
  • the adhesive applying means 27 for applying adhesive having a constant width onto the surface of the master sheet P may have a plate-shaped structure in which a plurality of nozzles are arranged in a line. In the plate-shaped structure, the nozzles can be selectively actuated depending on the size and the shape of the master sheet P to optionally adjust the width of the adhesive applied.
  • the adhesive applying means 27 has a drum-shaped structure which includes a immersed roller 29 immersed in an adhesive storage tank 28, and a transfer roller 30 positioned adjacent the immersed roller 29 and contacted with the master sheet P.
  • a drum-shaped cutter 31 and a suction cylinder 32 are provided, and a plurality of winding roller 33a, 33b and 33c and a guide roller 34 are disposed adjacent the drum-shaped cutter 31.
  • the drum-shaped cutter 31 for cutting the inlet 60 and the moisture-resistant band 70 in a constant length while being supplied toward the output side of the guide roller 34 includes at least two adjacent cutter which have different diameter each other. It is preferable that an auto-splicer is provided adjacent the winding roller 33a, 33b and 33c for minimizing a material loss by means of combining the end of supplied material with that of new one.
  • a cut-out portion forming cutter 35 is provided over the guide roller 34 for forming a cut-out portion 62 (Fig. 4) in the corner of the lower half of the inlet 60 which is continuously supplied from the winding roller 33b, and a paper strap supplying device 36 is disposed over the suction cylinder 32 for supplying a paper strap 75.
  • the paper strap supplying device 36 has a box-shaped structure of which the lower part is opened, and in which the plurality of paper strap 75 are stacked. When the suction force is applied by the suction cylinder 32, the paper strap supplying device 36 supplies the paper strap 75 one by one.
  • the paper strap 75 supplied as mentioned above is, as shown in Fig. 4, substantially arranged in the center of an upper flap member 58.
  • the paper strap 75 to be concealed is integrally formed with a strap fixing plate 76.
  • the upper flap member 58 is formed at its middle portion with a rectangular cut-out portion, and the strap fixing plate 76 is attached to the inner surface of the upper flap member 58 such that the strap fixing plate 76 closes the cut-out portion. Accordingly, the paper strap 75 can be spread upward if desired.
  • the paper strap 75 is covered up by the upper flap member 58.
  • An upper flap member 59 extended from a vertical wall 54 is integrally formed at its middle portion with a strap cover 59b, and the strap cover 59b is defined by a perforated line 59a.
  • the strap cover 59b is peeled off to expose the paper strap 75.
  • an inlet without the cut-out portion is to be used, as a cardboard forming the box is folded along a folding line, the corner portions of the cardboard will be distorted and protruded inward.
  • the cut-out portion 62 of the present invention can prevent the separation of the inlet 60 from the master sheet P.
  • the master sheet P having the inlet 60 and the moisture-resistant band 70 attached thereto is conveyed through a conveyor 38 to a storage house.
  • a squeeze roller 37 is installed over the conveyor 38 to firmly combine the inlet 60 and the moisture-resistant band 70 with the master sheet P.
  • the inlet 60 and the moist-resistant band 70 cut to a predetermined length by the cutter 31 is, as shown in Fig. 3, sucked onto a plurality of suction holes 32a of the suction cylinder 32, precisely aligned in a proper position over the master sheet P, and then transferred onto the adhesive applied on the master sheet P by eliminating the suction force of the suction cylinder 32.
  • the plurality of suction holes 32a of the suction cylinder 32 are arranged to have a constant spacing in a straight line,, and each hole 32a is communicated with a vacuum line having intake and exhaust passages.
  • the intake or exhaust function of the suction holes 32a is accomplished in a selective manner by a numerical controller(not shown) .
  • the controller determines the precise position of the inlet 60, the moisture-resistant band 70 or the paper strap 75 in accordance with the kind and shape of the box being formed, to ensure the proper suction or release of them.
  • the inlet 60, the moisture-resistant band 70 or the paper strap 75 cut into a predetermined length by the cutter 31 on the guide roller 34 is sucked, only a portion of the suction holes 32a can be controlled to provide intake force or exhaust force such that they can be selectively sucked.
  • the suction cylinder 32 blows out an air through the suction holes 32a to transfer the inlet 60, the moisture resistant band 70 or the paper strap 75 onto the master sheet P.
  • the coated paper is combined with the cardboard so as to make the master sheet P.
  • the master sheet P is cut to a predetermined size and shape, then folding portions and perforated lines are defined on the master sheet P to form a desired box.
  • the master sheet P for forming the box includes, as shown in Fig.
  • a tear tape 50 On the inner upper portion of the master sheet P having been formed to a box shape, there is provided with a tear tape 50.
  • the tear tape 50 extends over the three vertical walls 51, 52 and 54 selected from the four vertical walls 51, 52, 53 and 54 to produce a lid part when it is peeled off.
  • the tear tape 50 can be attached to the master sheet P before the master sheet P is cut to a predetermined size and shape after combination of the printed paper with the cardboard.
  • the master sheet P having the tear tape 50 attached thereto is moved through the first conveyor belt 21 to the second conveyor belt 26 over which the adhesive applying device 27 is installed.
  • the adhesive is applied on the master sheet P in a constant width and to a strip shape.
  • the position and width of the adhesive is determined after considering the position of the inlet 60, the moisture-resistant band 70 and the paper strap 75.
  • a adhesive 61 is applied along the entire lower half thereof such that the inlet 60 firmly contacts with the lower part of the tear tape 50 to maintain its watertightness.
  • the moisture-resistant band 70 extends laterally from the end of the coupling member 55 to a predetermined position of the vertical wall 54 such that it surrounds substantially completely the entire inner surface of the box in a folded state thereof.
  • the moisture-resistant band 70 extends throughout the entire lateral length of the box except for the portion of the vertical wall 51 to be overlapped with the coupling member 55 upon folding.
  • the adhesive 71 is applied only to the lower half of the moisture-resistant band 70.
  • adhesive 72 is applied to the surfaces of the moisture-resistant band 70 which come into contact with the front and rear flap members
  • adhesive is locally applied to the surfaces of the moisture-resistant band 70 which come into contact with the left and right flap members 56 and 57 so as to provide a local adhesive surface thereby improve its watertight properties.
  • the master sheet P having adhesive applied thereon is moved to the suction cylinder 32 through the second conveyor belt 26, and the suction cylinder 32 is rotated in a state that the inlet 60 and the moisture-resistant band 70 are sucked onto the suction cylinder 32.
  • the inlet 60 and the moisture-resistant band 70 are supplied from the winding roller 33a, 33b and 33c through the guide roller 34 and cut into a constant length by the cutter 31.
  • the inlet 60 and the moisture-resistant band 70 are transferred to the adhesive applied onto the master sheet P.
  • the lower portion of the inlet 60 is not distorted and adheres closely to the inner surface of the cardboard.
  • the cut-out portion 62 of the inlet 60 may be formed into a notch-shaped portion opened downward, but may be also formed into a cut-out opening enclosed by the inlet, in view of shaping and assembling process of the cardboard.
  • the lower portion of the inlet 60 can be bent without distortion because of the cut-out portions 62 while the upper portion of the inlet 60 can press strongly the portion above the tear tape 50, that is, the upper portion of the inlet 60 functions as a locking device.
  • the moisture-resistant band 70 which adheres to the folding line between the vertical walls 51, 52, 53 and 54 and the flap members 56, 57, 58 and 59 to surround the four peripheral edges of the box is comprised of a strip tape for sealing li itedly the edges of the box.
  • the user peels off the tear tape 50, and the upper part of the box formed by peeling off the tear tape can be turned over upward, thereby providing a half lid part 45 corresponding to the length of the tear tape 50.
  • the inlet 60 Defined at the upper portion of the box which has been cut by removing the tear tape 50 is the inlet 60.
  • the lower portion of the inlet 60 adheres to the inner surface of the box without distortion due to the cut-out portions 62, while the upper portion of the inlet 60 is widened upward to a predetermined inclination. Accordingly, it is possible to maximally reduce introduction of outer air and to prevent the lid part from being incidentally opened when the lid part of the box is opened and closed.
  • the moisture-resistant band 70 is provided along the folding lines of the flap member 56, 57, 58 and 59, it is possible to obtain the watertightness by sequentially folding the flap members 56, 57, 58 and 59.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

Disclosed is a package box for packing the solid detergent in the form of fine particles. The package box has an inlet (60) and a moisture-resistant band (70) at corners of the upper and the lower open ends thereof. The detergent is prevented from being leaked out of the packing box, even when the packing box is partially deformed due to careless handling while it is transported or stored.

Description

METHOD AND APPARATUS FOR FORMING A PACKING BOX
TECHNICAL FIELD
The present invention relates to a method and an apparatus for forming a packing box. More particularly, the present invention relates to a method and an apparatus for forming a packing box with a strip-shaped moisture resistant band which functions to prevent contents from being leaked out of the box even when the packing box is partially deformed due to careless handling while the box is transported or stored.
BACKGROUND ART
Generally, packing boxes are required to be impact- resistant, durable, and watertight, since it is very important to preserve their contents such as a solid detergent and the like as their original state while the contents are consumed or the packed products are being in circulation. If a packing box failed to have properties as mentioned above, it encounters several problems. For example, since the solid detergent packed in the box is in the form of fine particles, it may be easily agglomerated upon contact with air or moisture which may leak into the box. Also, the packing box is apt to be damaged at its corner or edge by an impact possibly applied thereto from outside during transportation or in circulation, thereby its contents may leak through a hole or a gap formed due to the damage.
A conventional packing box is integrally formed at its upper portion with a tear tape portion so as to make the box be easily opened. However, since the tear tape portion is defined at the upper portion of the vertical wall member of the box by perforated lines, outer air or humidity may be penetrated into the box through the perforated lines, thereby accelerating the agglomeration of the solid detergent packed in the box.
Accordingly, the packing box is provided at its inner surface with an inlet such that the inlet covers the tear tape portion in order to improve its durability and prevent penetration of air. The inlet is made by preparing a cardboard having four main walls and three subsidiary walls, and folding the subsidiary walls inward. However, as the inlet is overlapped in its whole surface with the inner surface of the box, the box is unnecessarily increased in weight and additional procedures for fixing the inlet are required, thereby lowering productivity. Recently, there has been used a multiple reinforcing member for providing a packing box which is more firm, and several types of moisture resistant structure are disclosed. However, this paper box increases manufacturing cost and weight due to the provision of the additional member. Moreover, if the dimension of the additional member does not coincide with that of the paper box, it can not accomplish its intended purpose, and thereby making the expensive material useless and the box deteriorated.
In addition, rivets and a vinyl envelope for enclosing the detergent are necessary for the hand strap attached to the packing box, and the rivets and the vinyl envelope are made of material causing the environmental pollution. Therefore, the value of the box can be greatly damaged due to the environmental problem caused by use of such a material.
DISCLOSURE OF INVENTION
Accordingly, the present invention has been made in view of the above-described problems occurring in the prior art, and an object of the present invention is to provide an apparatus for forming a packing box which has enhanced durability and watertightness.
Another object of the present invention is to provide a method for forming a packing box which has enhanced durability and watertightness.
Another object of the present invention is to provide a high value-added packing box which does not incorporate a foreign material causing environmental pollution but is made from reproducible paper so that the box can be perfectly reused.
To achieve the above object, the present invention provides a method for forming a packing box, the method comprising the steps of: coating a printed paper and combining the coated paper with a cardboard, so as to make a master sheet; cutting the master sheet to have a predetermined size and shape, and then defining folding portions and forming perforated lines on the master sheet; applying adhesive in a strip shape on the master sheet; supplying an inlet and a moisture-resistant band having been cut to a predetermined length onto the adhesive in such a manner to be in precise alignment with the adhesive, and then attaching the inlet and the moisture-resistant band on the adhesive; attaching a paper strap on a flap member of the master sheet; and attaching together corners of the master sheet having the moisture-resistant band attached thereon, so as to form a packing box.
According to one embodiment of the present invention, the step of attaching the paper strap on the flap member of the master sheet and the step of attaching the inlet and the moisture-resistant band on the adhesive by supplying the inlet and the moisture-resistant band onto the adhesive with the inlet and the moisture-resistant band being in precise alignment with the adhesive are performed in a single step. According to another embodiment of the present invention, the method further comprises a step of attaching a tear tape on an inner upper portion of the master sheet having been formed to a box shape, so that a lid part is produced when the tear tape is peeled off. According to another embodiment of the present invention, a device for forming a packing box is provided, the device comprising: a means for continuously supplying a master sheet having a predetermined shape; a die cutter for cutting the supplied master sheet into a predetermined box shape; a first and a second conveyer belts for conveying the box-shaped master sheet at a constant speed, the first and the second conveyer belts being disposed in close contact with an upper surface of a base; a means for applying adhesive with a constant width on a surface of the master sheet, the adhesive applying means being disposed above the second conveyer belt; a plurality of winding rollers and a plurality of guide rollers for winding an inlet and a moisture-resistant band thereon, the inlet and the moisture-resistant band with a predetermined length being supplied onto the adhesive applied on the master sheet; a drum-shaped cutter for cutting the inlet and the moisture-resistant band respectively to a predetermined length, the inlet and the moisture-resistant band being extended out from the guide rollers; and a suction cylinder for applying a sucking force to end portions of the inlet and the moisture-resistant band so as to be put them exactly on the adhesive on the master sheet, and then releasing the sucking force so as to cause the inlet and the moisture-resistant band to be moved to the master sheet.
According to another embodiment of the present invention, the drum-shaped cutter for cutting the inlet and the moisture-resistant band respectively to a predetermined length comprises at least two adjacent cutters having different diameters each other.
According to another embodiment of the present invention, the device further comprises a means for supplying a paper strap, the paper strap supplying means being disposed outside the suction cylinder in close contact with the cutter.
According to another embodiment of the present invention, the device further comprises a cut-out portion forming cutter for selectively cutting a lower edge of the inlet, the cut-out portion forming cutter being disposed above the guide roller. According to another embodiment of the present invention, the device further comprises a squeeze roller for firmly attaching the inlet and the moisture-resistant band on the master sheet, the squeeze roller being disposed outside the suction cylinder. According to another embodiment of the present invention, the adhesive applying means comprises a plurality of nozzles aligned in a line, and thereby the width of the adhesive can be optionally controlled by selectively opening a part of the nozzles. According to still another embodiment of the present invention, the adhesive applying means comprises a cylindrical drum, the cylindrical drum having an immersed roller immersed in an adhesive storage tank, and a transfer roller cooperating with the immersed roller, the transfer roller being in contact with the immersed roller and the supplied master sheet.
BRIEF DESCRIPTION OF DRAWINGS
The above object, and other features and advantages of the present invention will be more apparent after a reading of the following detailed description taken in conjunction with the drawings, in which:
FIG. 1 is a flow chart schematically illustrating the packing box forming procedure in accordance with an embodiment of the present invention;
FIG. 2 is a front view illustrating the whole structure of a packing box forming apparatus in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view of an suction cylinder used in the packing box forming apparatus, illustrating a moisture-resistant band and an inlet sucked thereon; and
FIG. 4 is a development view of a packing box having the moisture-resistant band and the inlet in accordance with the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, method and apparatus for forming a packing box in accordance with an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a flow chart schematically illustrating the packing box forming procedure in accordance with an embodiment of the present invention. Referring now to FIG. 2, there is illustrated a packing box forming apparatus. The apparatus includes a master sheet supplying device 10 which continuously supplies a master sheet P treated to a desired shape. The master sheet P supplied through the master sheet supplying device 10 is conveyed in a constant velocity along a first conveyor belt 21 which is installed in the upper end of a base 20. The master sheet P is cut into a predetermined shape of box, by a die cutter 22 which is provided above the first conveyor belt 21. The first conveyor belt 21 is supported by a pair of guide rollers 23 and 24 disposed in opposite relation each other, the tension of the first conveyor belt 21 is maintained by a tensioner 25 installed between the pair of guide rollers 23 and 24.
On the upper end of the base 20, a second conveyor belt 26 is provided on the left side of the first conveyor belt 21. An adhesive applying device 27 is positioned above the second conveyor belt 26 for applying adhesive having a constant width onto the surface of the master sheet P. The adhesive applying means 27 for applying adhesive having a constant width onto the surface of the master sheet P, may have a plate-shaped structure in which a plurality of nozzles are arranged in a line. In the plate-shaped structure, the nozzles can be selectively actuated depending on the size and the shape of the master sheet P to optionally adjust the width of the adhesive applied. In accordance with the preferred embodiment of the present invention, the adhesive applying means 27 has a drum-shaped structure which includes a immersed roller 29 immersed in an adhesive storage tank 28, and a transfer roller 30 positioned adjacent the immersed roller 29 and contacted with the master sheet P. For attaching an inlet 60 and a moisture-resistant band 70(Fig. 4) having a predetermined width and length to the master sheet P on which the adhesive is applied, a drum- shaped cutter 31 and a suction cylinder 32 are provided, and a plurality of winding roller 33a, 33b and 33c and a guide roller 34 are disposed adjacent the drum-shaped cutter 31. The drum-shaped cutter 31 for cutting the inlet 60 and the moisture-resistant band 70 in a constant length while being supplied toward the output side of the guide roller 34, includes at least two adjacent cutter which have different diameter each other. It is preferable that an auto-splicer is provided adjacent the winding roller 33a, 33b and 33c for minimizing a material loss by means of combining the end of supplied material with that of new one.
A cut-out portion forming cutter 35 is provided over the guide roller 34 for forming a cut-out portion 62 (Fig. 4) in the corner of the lower half of the inlet 60 which is continuously supplied from the winding roller 33b, and a paper strap supplying device 36 is disposed over the suction cylinder 32 for supplying a paper strap 75. The paper strap supplying device 36 has a box-shaped structure of which the lower part is opened, and in which the plurality of paper strap 75 are stacked. When the suction force is applied by the suction cylinder 32, the paper strap supplying device 36 supplies the paper strap 75 one by one. The paper strap 75 supplied as mentioned above is, as shown in Fig. 4, substantially arranged in the center of an upper flap member 58. The paper strap 75 to be concealed is integrally formed with a strap fixing plate 76. In other words, the upper flap member 58 is formed at its middle portion with a rectangular cut-out portion, and the strap fixing plate 76 is attached to the inner surface of the upper flap member 58 such that the strap fixing plate 76 closes the cut-out portion. Accordingly, the paper strap 75 can be spread upward if desired. The paper strap 75 is covered up by the upper flap member 58.
An upper flap member 59 extended from a vertical wall 54 is integrally formed at its middle portion with a strap cover 59b, and the strap cover 59b is defined by a perforated line 59a. When the paper strap 75 is to be used, the strap cover 59b is peeled off to expose the paper strap 75. When an inlet without the cut-out portion is to be used, as a cardboard forming the box is folded along a folding line, the corner portions of the cardboard will be distorted and protruded inward. The cut-out portion 62 of the present invention can prevent the separation of the inlet 60 from the master sheet P.
The master sheet P having the inlet 60 and the moisture-resistant band 70 attached thereto is conveyed through a conveyor 38 to a storage house. A squeeze roller 37 is installed over the conveyor 38 to firmly combine the inlet 60 and the moisture-resistant band 70 with the master sheet P.
The inlet 60 and the moist-resistant band 70 cut to a predetermined length by the cutter 31 is, as shown in Fig. 3, sucked onto a plurality of suction holes 32a of the suction cylinder 32, precisely aligned in a proper position over the master sheet P, and then transferred onto the adhesive applied on the master sheet P by eliminating the suction force of the suction cylinder 32. For this, the plurality of suction holes 32a of the suction cylinder 32 are arranged to have a constant spacing in a straight line,, and each hole 32a is communicated with a vacuum line having intake and exhaust passages. The intake or exhaust function of the suction holes 32a is accomplished in a selective manner by a numerical controller(not shown) . The controller determines the precise position of the inlet 60, the moisture-resistant band 70 or the paper strap 75 in accordance with the kind and shape of the box being formed, to ensure the proper suction or release of them. In other words, when the inlet 60, the moisture-resistant band 70 or the paper strap 75 cut into a predetermined length by the cutter 31 on the guide roller 34 is sucked, only a portion of the suction holes 32a can be controlled to provide intake force or exhaust force such that they can be selectively sucked. In this state, as the suction cylinder 32 is rotated in a 90 degree arc and contacts with the master sheet P, the suction cylinder 32 blows out an air through the suction holes 32a to transfer the inlet 60, the moisture resistant band 70 or the paper strap 75 onto the master sheet P. According to the present invention constructed as mentioned above, after a paper having a printed matter thereon is coated by laminating method or other surface treating method, the coated paper is combined with the cardboard so as to make the master sheet P. The master sheet P is cut to a predetermined size and shape, then folding portions and perforated lines are defined on the master sheet P to form a desired box. The master sheet P for forming the box includes, as shown in Fig. 4, four vertical walls 51, 52, 53 and 54, a coupling member 55 outwardly extending from the outermost vertical wall 54, and upper and lower flap members 56, 57, 58 and 59 being foldably connected to respective walls 51, 52, 53 and 54. The flap members 56 and 57 extended from the vertical walls 51 and 53 have a width such that the flap members 56 and 57 are contacted with the flap member 58.
On the inner upper portion of the master sheet P having been formed to a box shape, there is provided with a tear tape 50. The tear tape 50 extends over the three vertical walls 51, 52 and 54 selected from the four vertical walls 51, 52, 53 and 54 to produce a lid part when it is peeled off. Of course, it is to be understood that the tear tape 50 can be attached to the master sheet P before the master sheet P is cut to a predetermined size and shape after combination of the printed paper with the cardboard.
The master sheet P having the tear tape 50 attached thereto is moved through the first conveyor belt 21 to the second conveyor belt 26 over which the adhesive applying device 27 is installed. In the adhesive applying device 27, the adhesive is applied on the master sheet P in a constant width and to a strip shape. The position and width of the adhesive is determined after considering the position of the inlet 60, the moisture-resistant band 70 and the paper strap 75. In the position to which the inlet 60 is to be attached, a adhesive 61 is applied along the entire lower half thereof such that the inlet 60 firmly contacts with the lower part of the tear tape 50 to maintain its watertightness. Also, in the position to which the moisture-resistant band 70 is to be attached, the moisture-resistant band 70 extends laterally from the end of the coupling member 55 to a predetermined position of the vertical wall 54 such that it surrounds substantially completely the entire inner surface of the box in a folded state thereof. In other words, the moisture-resistant band 70 extends throughout the entire lateral length of the box except for the portion of the vertical wall 51 to be overlapped with the coupling member 55 upon folding. The adhesive 71 is applied only to the lower half of the moisture-resistant band 70. In the upper half of the moisture-resistant band 70, adhesive 72 is applied to the surfaces of the moisture-resistant band 70 which come into contact with the front and rear flap members
58 and 59. However, adhesive is locally applied to the surfaces of the moisture-resistant band 70 which come into contact with the left and right flap members 56 and 57 so as to provide a local adhesive surface thereby improve its watertight properties.
The master sheet P having adhesive applied thereon is moved to the suction cylinder 32 through the second conveyor belt 26, and the suction cylinder 32 is rotated in a state that the inlet 60 and the moisture-resistant band 70 are sucked onto the suction cylinder 32. The inlet 60 and the moisture-resistant band 70 are supplied from the winding roller 33a, 33b and 33c through the guide roller 34 and cut into a constant length by the cutter 31. As the master sheet P passes through the suction cylinder 32, the inlet 60 and the moisture-resistant band 70 are transferred to the adhesive applied onto the master sheet P. Since the upper end of the box is attached by the strip-shaped inlet 60 and the lower portion of the inlet 60 is formed with the cut-out portion 62, the lower portion of the inlet 60 is not distorted and adheres closely to the inner surface of the cardboard. The cut-out portion 62 of the inlet 60 may be formed into a notch-shaped portion opened downward, but may be also formed into a cut-out opening enclosed by the inlet, in view of shaping and assembling process of the cardboard. The lower portion of the inlet 60 can be bent without distortion because of the cut-out portions 62 while the upper portion of the inlet 60 can press strongly the portion above the tear tape 50, that is, the upper portion of the inlet 60 functions as a locking device.
Since the box assembled as mentioned above maintains efficient impact resistance and watertightness, it is possible to prevent agglomeration of detergent occurring during transportation and distribution of the product. The moisture-resistant band 70 which adheres to the folding line between the vertical walls 51, 52, 53 and 54 and the flap members 56, 57, 58 and 59 to surround the four peripheral edges of the box is comprised of a strip tape for sealing li itedly the edges of the box. In use of the box, the user peels off the tear tape 50, and the upper part of the box formed by peeling off the tear tape can be turned over upward, thereby providing a half lid part 45 corresponding to the length of the tear tape 50.
Defined at the upper portion of the box which has been cut by removing the tear tape 50 is the inlet 60. At this time, as described previously, the lower portion of the inlet 60 adheres to the inner surface of the box without distortion due to the cut-out portions 62, while the upper portion of the inlet 60 is widened upward to a predetermined inclination. Accordingly, it is possible to maximally reduce introduction of outer air and to prevent the lid part from being incidentally opened when the lid part of the box is opened and closed. Also, since the moisture-resistant band 70 is provided along the folding lines of the flap member 56, 57, 58 and 59, it is possible to obtain the watertightness by sequentially folding the flap members 56, 57, 58 and 59.
Although the present invention has been described and illustrated with reference to the preferred embodiment, it is to be readily understood that the present invention is not limited to the preferred embodiment, and various changes and modifications can be made without departing from the scope and spirit of the invention defined in the appended claims.

Claims

1. A method for forming a packing box, the method comprising the steps of: coating a printed paper and combining the coated paper with a cardboard, so as to make a master sheet; cutting the master sheet to have a predetermined size and shape, and then defining folding portions and forming perforated lines on the master sheet; applying adhesive in a strip shape on the master sheet; supplying an inlet and a moisture-resistant band having been cut to a predetermined length onto the adhesive in such a manner to be in precise alignment with the adhesive, and then attaching the inlet and the moisture-resistant band on the adhesive; attaching a paper strap on a flap member of the master sheet; and attaching together corners of the master sheet having the moisture-resistant band attached thereon, so as to form a packing box.
2. A method as claimed in claim 1, wherein the step of attaching the paper strap on the flap member of the master sheet and the step of attaching the inlet and the moisture-resistant band on the adhesive by supplying the inlet and the moisture-resistant band onto the adhesive with the inlet and the moisture-resistant band being in precise alignment with the adhesive are performed in a single step.
3. A method as claimed in claim 1 or claim 2, the method further comprising a step of attaching a tear tape on an inner upper portion of the master sheet having been formed to a box shape, so that a lid part is produced when the tear tape is peeled off.
4. A device for forming a packing box, the device comprising: a means for continuously supplying a master sheet having a predetermined shape; a die cutter for cutting the supplied master sheet into a predetermined box shape; a first and a second conveyer belts for conveying the box-shaped master sheet at a constant speed, the first and the second conveyer belts being disposed in close contact with an upper surface of a base; a means for applying adhesive with a constant width on a surface of the master sheet, the adhesive applying means being disposed above the second conveyer belt; a plurality of winding rollers and a plurality of guide rollers for winding an inlet and a moisture-resistant band thereon, the inlet and the moisture-resistant band with a predetermined length being supplied onto the adhesive applied on the master sheet; a drum-shaped cutter for cutting the inlet and the moisture-resistant band respectively to a predetermined length, the inlet and the moisture-resistant band being extended out from the guide rollers; and a suction cylinder for applying a sucking force to end portions of the inlet and the moisture-resistant band so as to be put them exactly on the adhesive on the master sheet, and then releasing the sucking force so as to cause the inlet and the moisture-resistant band to be moved to the master sheet.
5. A device as claimed in claim 4, wherein the drum- shaped cutter for cutting the inlet and the moisture- resistant band respectively to a predetermined length comprises at least two adjacent cutters having different diameters each other.
6. A device as claimed in claim 4, the device further comprising a means for supplying a paper flap, the paper flap supplying means being disposed outside the suction cylinder in close contact with the cutter.
7. A device as claimed in claim 4, the device further comprising a cut-out portion forming cutter for selectively cutting a lower edge of the inlet, the cut-out portion forming cutter being disposed above the guide roller.
8. A device as claimed in claim 4, the device further comprising a squeeze roller for firmly attaching the inlet and the moisture-resistant band on the master sheet, the squeeze roller being disposed outside the suction cylinder.
9. A device as claimed in any of the claims 4 through 8, wherein the adhesive applying means comprises a plurality of nozzles aligned in a line, and thereby the width of the adhesive can be optionally controlled by selectively opening a part of the nozzles.
10. A device as claimed in any of the claims 4 through 8, wherein the adhesive applying means comprises a cylindrical drum, the cylindrical drum having an immersed roller immersed in an adhesive storage tank, and a transfer roller cooperating with the immersed roller, the transfer roller being in contact with the immersed roller and the supplied master sheet.
PCT/KR1995/000085 1994-06-30 1995-06-30 Method and apparatus for forming a packing box WO1996000651A1 (en)

Priority Applications (1)

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AU29371/95A AU2937195A (en) 1994-06-30 1995-06-30 Method and apparatus for forming a packing box

Applications Claiming Priority (2)

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KR1994/15595 1994-06-30
KR1019940015595A KR0138718B1 (en) 1994-06-30 1994-06-30 Packaging paper box molding apparatus with improved watertightness and method

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WO (1) WO1996000651A1 (en)

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WO2002020361A1 (en) * 2000-09-06 2002-03-14 The Procter & Gamble Company Container for a laundry treatment agent
CN102514792A (en) * 2011-12-30 2012-06-27 赛闻（天津）工业有限公司 Latch for corrugated paper packaging box
CN103158922A (en) * 2013-01-15 2013-06-19 浙江大胜达包装有限公司 High folding resistance shake covered corrugated case and manufacturing method and dedicated device thereof

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KR20030001767A (en) * 2001-06-27 2003-01-08 김순남 Gluing Method for Pasteboard Machine
KR20010085049A (en) * 2001-07-25 2001-09-07 이광기 How to make a small cup of paper cup
KR100897257B1 (en) * 2007-01-31 2009-05-14 한상순 Packaging Box Manufacturing Equipment
KR20160080427A (en) * 2014-12-29 2016-07-08 (주)선우판지 Apparatus of continual manufacturing package formed by corrugated cardboard
KR102409714B1 (en) * 2021-09-13 2022-06-23 진석원 Method for manufacturing commercial paper color box

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WO2002020361A1 (en) * 2000-09-06 2002-03-14 The Procter & Gamble Company Container for a laundry treatment agent
CN102514792A (en) * 2011-12-30 2012-06-27 赛闻（天津）工业有限公司 Latch for corrugated paper packaging box
CN102514792B (en) * 2011-12-30 2013-10-09 赛闻（天津）工业有限公司 Latch for corrugated paper packaging box
CN103158922A (en) * 2013-01-15 2013-06-19 浙江大胜达包装有限公司 High folding resistance shake covered corrugated case and manufacturing method and dedicated device thereof

Also Published As

Publication number Publication date
KR0138718B1 (en) 1998-06-01
AU2937195A (en) 1996-01-25
KR960000476A (en) 1996-01-25

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