WO2023112360A1 - 組立式紙容器、組立式紙容器の製造方法、及び組立式紙容器の製造装置 - Google Patents
組立式紙容器、組立式紙容器の製造方法、及び組立式紙容器の製造装置 Download PDFInfo
- Publication number
- WO2023112360A1 WO2023112360A1 PCT/JP2022/024308 JP2022024308W WO2023112360A1 WO 2023112360 A1 WO2023112360 A1 WO 2023112360A1 JP 2022024308 W JP2022024308 W JP 2022024308W WO 2023112360 A1 WO2023112360 A1 WO 2023112360A1
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- WIPO (PCT)
- Prior art keywords
- resin film
- container body
- paper container
- container
- assembled
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 54
- 238000000034 method Methods 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 claims description 108
- 239000011347 resin Substances 0.000 claims description 108
- 238000003825 pressing Methods 0.000 claims description 25
- 238000003860 storage Methods 0.000 claims description 10
- 239000007888 film coating Substances 0.000 claims description 4
- 238000009501 film coating Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 abstract description 10
- 235000013305 food Nutrition 0.000 description 8
- 238000009966 trimming Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000009448 modified atmosphere packaging Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
-
- 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
- B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
- B65D5/563—Laminated linings; Coatings
-
- 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
-
- 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
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
- B31D5/02—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles including pressing
-
- 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
- B65D5/20—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
-
- 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
- B65D5/20—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
- B65D5/2085—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form the central panel having incisions defining foldable flaps hinged to its edges
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Definitions
- the present invention relates to an assemblable paper container, a method for manufacturing this assemblable paper container, and an apparatus for manufacturing this assemblable paper container.
- an assembly type paper container in which a tray-shaped container body having a flange portion at the upper end is assembled from a blank sheet mainly made of paper.
- Some of these collapsible paper containers have a resinous thermoplastic resin film attached to the inner surface of the container body including the upper surface of the flange portion (see Patent Documents 1 and 2, etc.). Since the collapsible paper container with the resin film is resinous, it is mainly used as trays and bowls for storing food and the like.
- prefabricated paper containers are environmentally friendly products that can, for example, suppress the generation of secondary microplastics that occur in the environment.
- the resin film can be peeled off from the container body, the resin film and the paper container body can be separated, and the resin film and the container body can be recycled. Due to these advantages, for example, MAP (Modified Atmosphere Packaging) is applied to the assembled paper container, and it is expected to be used as a packaging container for foods and the like and a storage container for foods and the like.
- MAP Modified Atmosphere Packaging
- a packaging method has been developed in which the air in the storage part of the container body is replaced with food gas suitable for food (for example, MAP).
- MAP food gas suitable for food
- a top seal is attached to the resin film on the upper surface of the flange.
- the top seal is also thin, even if the top seal is adhered to the resin film, a cavity is formed along the gap between the top surface of the resin film and the bottom surface of the top seal. That is, even with a top seal, it is difficult to completely block the cavity.
- the cavity is open at both ends. Therefore, the housing portion of the container body communicates with the outside of the container body through this cavity.
- the present invention has been devised in view of the above-described problems, and its object is to suppress the leakage or seepage of the contained material from the containing portion of the container body.
- a prefabricated paper container is assembled from blank sheets mainly made of paper, and includes a container body having an accommodating portion, and a resin film covering the inner surface of the container body.
- a type paper container wherein the container body is continuous with a bottom surface, a plurality of side surfaces rising from the bottom surface, and upper end portions of the plurality of side surfaces, and extends outward from the container after assembly. and a flange portion formed on the upper surface of the flange portion, and a step extending outward from the accommodation portion side, which is generated by pasting the folded pieces of the blank sheet so as to overlap each other after assembly.
- the edge of the upper folded piece is pushed into the lower folded piece side, and the resin film is reduced in size at the portion covered with the upper surface of the flange portion of the container body. It is characterized in that the upper part is also substantially flat.
- a collapsible paper container according to the second invention is characterized in that, in the first invention, the container body is assembled from one blank sheet.
- a prefabricated paper container according to a third aspect of the invention is the first aspect or the second aspect of the invention, further comprising a top seal adhered to the resin film covering the upper surface of the flange portion to cover the accommodating portion.
- the top seal is adhered to the resin film across the step above the upper surface of the flange portion.
- a collapsible paper container according to a fourth invention is characterized in that, in the third invention, the resin film is pushed by the top seal at the step and is formed so as to be folded into three or more layers.
- a method for manufacturing an assembled paper container includes a container body assembled from blank sheets mainly made of paper and having an accommodating portion, and a resin film covering the inner surface of the container body.
- a plurality of side surfaces are raised from the bottom surface of the blank sheet to form the accommodating portion of the container body, the upper portions of the plurality of side surfaces are folded back, and the blank sheet is folded.
- the folded pieces are adhered so as to overlap each other, and a step extending outward from the accommodating portion is formed on the upper surface thereof, and a flange portion extending outward from the accommodating portion is formed to form the container body.
- a box-making process for assembling placing the resin film on the inner surface of the container body assembled in the box-making process; The edge of the container is pushed into the folded piece on the lower side to reduce the step, and the air between the container body and the resin film is discharged from the gap around the two, and the inner surface of the container body and a step reduction/resin film covering step of covering the resin film.
- a method for manufacturing an assembled paper container according to a sixth invention is the method for manufacturing an assembled paper container according to the fifth invention, wherein the resin film coated on the upper surface of the flange portion is coated with a and a top seal sticking step of sticking a top seal across the step above the step while pressing the upper part of the step.
- a manufacturing apparatus for an assembled paper container comprises a container body assembled from blank sheets mainly made of paper and having an accommodating portion, and a resin film covering the inner surface of the container body. a lower mold on which the container body is placed; and a lower mold provided in the lower mold for sucking air between the resin film and the resin film.
- a suction covering portion that covers the inner surface of the container body; an upper mold that faces the lower mold and sandwiches the resin film between the lower mold and the flange portion of the container body that is accommodated in the upper mold; and a flange pressing portion that presses the resin film on the flange portion, and a flange pressing portion provided below the flange pressing portion of the upper mold in the lower mold, the resin film is arranged, and the container body in the resin film When the surface of the area crossing the step of the flange portion is sucked by the suction covering portion, the edge of the upper folded piece constituting the step is pushed toward the lower folded piece side to reduce the step. and a step-reducing recess having a width equal to or greater than the length between the edges of the folded pieces.
- An apparatus for manufacturing an assembled paper container according to an eighth aspect of the present invention adheres a top seal to the resin film covering the upper surface of the flange portion of the assembled paper container manufactured by the apparatus for manufacturing an assembled paper container according to the seventh aspect of the invention. and a manufacturing apparatus for an assembled paper container covering the accommodating portion, comprising: a seal head arranged above the top seal; and a seal bucket arranged below the assembled paper container, wherein the seal The upper portion of the bucket is made of an elastic member, and the lower portion of the seal bucket is made of a hard member.
- FIG. 1(a) is a plan view showing a collapsible paper container according to an embodiment of the present invention
- FIG. 1(b) is a side view showing the collapsible paper container of FIG. 1(a).
- 1(c) is a perspective view showing the collapsible paper container of FIG. 1(a).
- FIG. 2 is an exploded view showing a blank sheet used for the assembly-type paper container of FIG. 1.
- FIG. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 1(a).
- FIG. 4 is a plan view showing a mode in which the accommodating portion of the knockdown paper container of FIG. 1 is covered with a top seal.
- 5(a) is an enlarged cross-sectional view taken along line BB in FIG. 4, and FIG.
- FIG. 5(b) is an enlarged view of portion C in FIG. 5(a).
- FIG. 6 is a flow chart showing the steps in the manufacturing method for the assembled paper container according to the embodiment of the present invention.
- FIGS. 7(a) and 7(b) are schematic cross-sectional views showing an example of an assembly-type paper container manufacturing apparatus according to an embodiment of the present invention.
- 8(a) to 8(c) are explanatory diagrams for explaining an enlarged main part of the manufacturing apparatus of FIG. 7.
- FIG. FIG. 9 is a schematic block diagram showing an example of a manufacturing system for an assembly type paper container according to an embodiment of the present invention.
- 10(a) to 10(c) are enlarged explanations of the essential parts of a pressing machine as a manufacturing device for a knockdown paper container for attaching a top seal to a knockdown paper container according to an embodiment of the present invention. It is an explanatory view for doing.
- an assembly type paper container 1 As shown in FIGS. 1(a) to 1(c), an assembly type paper container 1 according to an embodiment of the present invention includes a container body 11, a resin film 3 coated on the inner surface of the container body 11, It has
- the container body 11 has a housing portion 12 and a flange portion 13 .
- the container body 11 is assembled from one blank sheet 2 mainly made of paper as shown in FIG.
- a dotted line indicates a "valley fold” and a dashed line indicates a "mountain fold”.
- the valley fold lines and mountain fold lines are made up of, for example, perforations, half cuts, ruled lines, and the like.
- Solid lines in the blank sheet 2 indicate "notches”.
- the blank sheet 2 is subjected to "valley fold” and "mountain fold", and the folded pieces 13a and 13b are stuck together so that they overlap each other, whereby the container body 11 is constructed.
- the housing portion 12 has eight side surfaces 122 rising from the bottom surface 121 in this embodiment. Note that the accommodating portion 12 can be configured with three or more side surfaces 122 .
- the flange portion 13 is continuous with the upper end portion of each side surface 122 and extends outward from the housing portion 12 .
- steps 22 extending outward from the accommodation portion 12 side are formed at the four corners by laminating the folded pieces 13a and 13b of the blank sheet 2 so as to overlap each other after assembly. There are two.
- the step 22 is reduced by pushing the edge 31 of the upper folded piece 13a toward the lower folded piece 13b.
- the resin film 3 covers the inner surface of the container body 11 including the upper surface 131 of the flange portion 13 .
- the resin film 3 is substantially flat with small undulations even above the step 22 .
- Examples of the resin used for the resin film 3 suitable for coating the inner surface of the container body 11 include polyolefins such as polyethylene (PE) and polypropylene (PP), polyvinyl chloride, and polyethylene, which are thermoplastic resins. Polyester such as terephthalate (PET), ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer, polyamide, polyvinylidene chloride, polystyrene, polycarbonate, polybutene, polyvinyl alcohol and the like can be mentioned.
- the resin film 3 may be a single film made of any one of the above materials, or may be a film obtained by mixing a plurality of the above materials. Moreover, the resin film 3 may be a single-layer film or a laminated film obtained by laminating a plurality of layers.
- the collapsible paper container 1 can wrap and store items such as food by covering the storage portion 12 with the top seal 4 .
- the top seal 4 is adhered to the resin film 3 on the upper surface 131 of the flange portion 13 . Thereby, the top seal 4 covers the accommodating portion 12 .
- the top seal 4 is adhered to the resin film 3 across the step 22 above the upper surface 131 of the flange portion 13 .
- the outer portion of step 22 is designed to fit within the width of pressure area 32 . As a result, the outer portion of the step 22 can be reliably pushed by the pressing machine and further reduced in size as shown in FIGS. 5(a) and 5(b).
- the lower surface of the top seal 4 can be sufficiently thermocompression bonded to the upper surface of the resin film 3 above the step 22, and the top seal 4 can be attached to the upper surface of the resin film 3 to form a reduced gentle step. Even if there is 22, it can stick firmly.
- the resin film 3 is pushed by the top seal 4 at the step 22 and is formed so as to be folded into a plurality of layers of three or more layers, giving a reaction force to the top seal 4 being pressed, thereby preventing the top seal 4 from being damaged. It is easy to heat-press the lower surface to the upper surface of the resin film 3 .
- the blank sheet cutting step S1 for cutting and forming the blank sheet 2 is performed to manufacture the blank sheet 2 .
- a box making step S2 is performed to assemble the container body 11 from the blank sheet 2 cut out and manufactured in the blank sheet cutting step S1.
- the resin film 3 is placed on the inner surface of the container body 11 assembled in the box-making step S2, and the surface of the region crossing the step 22 of the resin film 3 is sucked to remove the edge of the upper folded piece 13a.
- the portion 31 is pushed toward the folded piece 13b on the lower side to reduce the step 22.
- air between the container body 11 and the resin film 3 is extracted from the gap around the container body 11 and the resin film 3 by vacuum pressure air.
- the step reduction/resin film covering step S3 of covering the inner surface of the container body 11 with the resin film 3 is performed.
- vacuum pressure air was exemplified.
- the air between the container body 11 and the resin film 3 may be discharged only by applying pressure from the upper part of the container 3 .
- a trimming step S4 is performed for trimming to remove excess resin film 3 around the collapsible paper container 1 to which the top seal 4 manufactured in the step reduction/resin film coating step S3 is not adhered. .
- a content accommodation step S5 is performed to store content such as food in the accommodation portion 12 of the collapsible paper container 1 from which the excess resin film 3 has been removed in the trimming step S4.
- a top seal sticking step S6 is performed in which the top seal 4 is stuck using a pressing machine so as to traverse the step 22 while pressing the upper part of the step 22 .
- the collapsible paper container 1 is manufactured, and the method for manufacturing the collapsible paper container 1 according to this embodiment is completed.
- the manufacturing apparatus 600 for the collapsible paper container 1 according to the embodiment of the present invention can manufacture the collapsible paper container 1 according to this embodiment. It is a new manufacturing equipment. This manufacturing apparatus 600 coats the container body 11 with the flange portion 13 with the resin film 3 and can reduce the step 22 during the coating.
- This manufacturing apparatus 600 includes a lower mold 610, a suction covering portion 611, an upper mold 620, a flange pressing portion 630, and a step reduction concave portion 610a (see FIGS. 8(a) to 8(c)). I have.
- the container body 11 is placed on the lower mold 610 .
- the suction covering part 611 is provided on the lower mold 610 and connected to the vacuum pump 640 .
- the suction covering part 611 is configured to suck the resin film 3 through the container body 11 placed on the lower mold 610 so that the air can escape from the gap between the container body 11 and the circumference of the container body 11 .
- the upper mold 620 faces the lower mold 610 and can move up and down.
- the resin film 3 is sandwiched between the lower mold 610 and the upper mold 620, and when the upper mold 620 is in close contact with the lower mold 610 with the resin film 3 interposed therebetween, the processing space is substantially closed. is formed. In this processing space, the resin film 3 is covered with the accommodating portion 12 and the flange portion 13 by, for example, vacuum pressure.
- the flange pressing portion 630 is housed inside the upper die 620 .
- the flange pressing portion 630 is supported by the top plate portion 621 of the upper die 620 by an elastic member 632 such as a spring that can expand and contract.
- the flange pressing portion 630 presses the flange portion 13 and the resin film 3 on the flange portion 13 during, for example, vacuum pressure.
- the step reduction concave portion 610a is provided below the flange pressing portion 630 of the upper mold 620 in the lower mold 610, and the resin film 3 is arranged and this
- the edge portion 31 of the upper folding piece 13a constituting the step 22 is folded downward. It has a width exceeding the length between the edges 31, 31 of the upper folded piece 13a that is pushed toward the piece 13b to reduce the step 22.
- the suction covering part 611 sucks the resin film 3 in the direction toward the container body 11 .
- the width of the step reduction recess 610a may be the same as the length between the edges 31, 31 of the upper folded piece 13a. It is preferable that the length exceeds the length between the edges 31, 31 of the folded piece 13a on the side so that an unreasonable shearing force is not applied to the folded piece 13b on the side.
- the step 22 is reduced by lowering the flange pressing portion 630 toward the lower die 610 side. Then, the flange holding portion 630 is lifted, and the collapsible paper container 1 is removed from the manufacturing apparatus 600 .
- the assembly-type paper container 1 can be manufactured.
- the production system 700 for the assembly type paper container 1 is configured such that, while the resin film 3 wound around the feed roller 710 is wound by the winding roller 720, the container body 11 having the flange portion 13 is The resin film 3 is covered.
- this manufacturing system 700 includes a feeding roller 710, a winding roller 720, a heating machine 730, a manufacturing device 600, and a trimming machine 740.
- a roll of strip-shaped resin film 3 is attached to the feeding roller 710 .
- One end of the belt-shaped resin film 3 is attached to the winding roller 720, and the belt-shaped resin film 3 is wound.
- the strip-shaped resin film 3 advances along the feed direction W from the feed roller 710 toward the take-up roller 720 .
- the heater 730 is arranged between the feeding roller 710 and the winding roller 720 and heats the strip-shaped resin film 3 .
- the manufacturing device 600 is the one described above and is arranged between the heater 730 and the winding roller 720 .
- the trimming machine 740 is arranged between the manufacturing device 600 and the winding roller 720 and trims the knockdown paper container 1 manufactured by the manufacturing device 600 . As a result, the collapsible paper container 1 is separated from the strip-shaped resin film 3 .
- the manufacturing system 700 for the collapsible paper container 1 includes the manufacturing device 600 . Therefore, according to this manufacturing system 700, the knockdown paper container 1 can be manufactured. Moreover, according to this manufacturing system 700, the collapsible paper container 1 can be continuously manufactured from the strip-shaped resin film 3. As shown in FIG.
- the top seal 4 is attached to the resin film 3 covering the upper surface of the flange portion 13 of the assembled paper container 1 manufactured by the manufacturing apparatus 600 described above.
- a pressing machine as a manufacturing apparatus according to an embodiment of the present invention, which affixes and covers the housing portion 12, will be described.
- this pressing machine comprises a seal head 810 arranged above the top seal 4 and seal buckets 820 and 830 arranged below the assembled paper container 1. and have.
- the seal bucket upper portion 820 is made of an elastic member such as rubber
- the seal bucket lower portion 830 is made of a hard member such as metal.
- the seal head 810 is lowered and heated to adhere the top seal 4 to the flange portion 13 of the collapsible paper container 1, as shown in FIGS. 4, 5(a) and 5(b). Usage form.
- the seal bucket upper portion 820 is made of an elastic member such as rubber, the elastic deformation of the seal bucket upper portion 820 causes the outer portion of the step 22 to be pushed by the presser when the top seal 4 is adhered as described above. can be reliably pushed and further contracted, as shown in FIGS. 5(a) and 5(b).
- the top seal 4 can be thermocompression bonded to the upper surface of the resin film 3 above the step 22 , and the top seal 4 can be attached to the resin film 3 above the step 22 . Even if there is a step 22 on the top surface of the film 3, it can be easily covered.
- the resin film 3 is pushed by the top seal 4 at the step 22 and is formed so as to be folded into a plurality of layers. It becomes easier to thermally press-bond to the upper surface of the film 3.
- the resin film 3 and the top seal 4 can be used to suppress leakage or seepage of the contents from the storage portion 12 of the container body 11.
- a type carton 1 can be provided.
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Abstract
Description
本発明の実施形態に係る組立式紙容器1は、図1(a)~図1(c)に示すように、容器本体11と、容器本体11の内面に被覆された樹脂製フィルム3と、を備えている。
11 容器本体
12 収容部
121 底面
122 側面
13 フランジ部
131 上面
13a 折返片
13b 折返片
2 ブランクシート
22 段差
3 樹脂製フィルム
31 上側の折返片の縁部
32 押圧領域
4 トップシール
600 製造装置
610 下型
610a 段差縮小凹部
611 吸引被覆部
620 上型
621 天板部
630 フランジ押え部
632 弾性部材
640 真空ポンプ
700 製造システム
710 送給ローラー
720 巻取りローラー
730 加熱機
740 トリミング機
810 シールヘッド
820 シールバケット上部
830 シールバケット下部
S1 ブランクシート切断工程
S2 製函工程
S3 段差縮小・樹脂製フィルム被覆工程
S4 トリミング工程
S5 収容物収容工程
S6 トップシール貼着工程
W 送り方向
Claims (8)
- 紙を主材料とするブランクシートから組み立てられ、収容部を有した容器本体と、前記容器本体の内面に被覆された樹脂製フィルムと、を備えた組立式紙容器であって、
前記容器本体は、
底面と、
前記底面から立ち上がる複数の側面と、
前記複数の側面の上端部と連続しているとともに、組み立て後に前記収容部の外側に向けて延設されるフランジ部と、
を有し、
前記フランジ部の上面には、組み立て後に前記ブランクシートの折返片同士が重なり合うように貼り合わせられることで生じる、前記収容部側から外側に向けて延びた段差が、上側の前記折返片の縁部が下側の前記折返片側に押し込まれることで縮小され、
前記樹脂製フィルムは、前記容器本体の前記フランジ部の上面に被覆される部分において、前記段差の上方においても、略平坦となっていること
を特徴とする組立式紙容器。 - 前記容器本体は、1枚のブランクシートから組み立てられていること
を特徴とする請求項1に記載の組立式紙容器。 - 前記フランジ部の上面に被覆された前記樹脂製フィルムに貼着されて前記収容部を被覆するトップシールを、さらに備え、
前記トップシールは、前記フランジ部の上面の上方において、前記段差を横断して、前記樹脂製フィルムに貼着されていること
を特徴とする請求項1又は2に記載の組立式紙容器。 - 前記樹脂製フィルムは、前記段差において、前記トップシールに押され、3層以上に折り重なるように形成されていること
を特徴とする請求項3に記載の組立式紙容器。 - 紙を主材料とするブランクシートから組み立てられ、収容部を有した容器本体と、前記容器本体の内面に被覆された樹脂製フィルムと、を備えた組立式紙容器の製造方法であって、
前記ブランクシートの底面から複数の側面を立ち上げて前記容器本体の前記収容部を形成し、これら複数の側面の上部を折り返すとともに、前記ブランクシートの折返片同士を重なり合うように貼り合わせ、その上面に前記収容部から外側に向けて延びた段差があり、前記収容部の外側に向けて延設されたフランジ部を形成して、前記容器本体を組み立てる製函工程と、
前記製函工程で組み立てた前記容器本体の内面に、前記樹脂製フィルムを配置し、前記樹脂製フィルムの前記段差を横断する領域の表面を吸引し、上側の前記折返片の縁部を下側の前記折返片側に押し込んで、前記段差を縮小するとともに、前記容器本体と前記樹脂製フィルムとの間の空気を、両者の周囲の隙間から抜出し、前記容器本体の内面に前記樹脂製フィルムを被覆する段差縮小・樹脂製フィルム被覆工程と、を備えること
を特徴とする組立紙容器の製造方法。 - 前記段差縮小・樹脂製フィルム被覆工程の後に、前記フランジ部の上面に被覆された前記樹脂製フィルムに、前記フランジ部の上面の上方において、前記段差の上方部位を押しつつ当該段差を横断するようにトップシールを貼着するトップシール貼着工程を、さらに備えること
を特徴とする請求項5に記載の組立紙容器の製造方法。 - 紙を主材料とするブランクシートから組み立てられ、収容部を有した容器本体と、前記容器本体の内面に被覆された樹脂製フィルムと、を備えた組立式紙容器の製造装置であって、
前記容器本体が載置される下型と、
前記下型に設けられ、前記樹脂製フィルムとの間の空気を吸引し、前記樹脂製フィルムを前記容器本体の内面に被覆させる吸引被覆部と、
前記下型と対向し、前記下型との間に前記樹脂製フィルムが挟まれる上型と、
前記上型に収容され、前記容器本体のフランジ部と前記フランジ部上の樹脂製フィルムとを押さえるフランジ押え部と、
前記下型における前記上型の前記フランジ押え部下方に設けられ、前記樹脂製フィルムを配置し、当該樹脂製フィルムにおける前記容器本体のフランジ部の段差を横断する領域の表面を吸引被覆部により吸引した際、前記段差を構成する上側の折返片の縁部を下側の折返片側に押し込んで、当該段差を縮小させる上側の前記折返片の縁部間の長さ以上の幅を有する段差縮小凹部と、
を備えたこと
を特徴とする組立紙容器の製造装置。 - 請求項7に記載の組立紙容器の製造装置で製造された組立紙容器におけるフランジ部の上面に被覆された前記樹脂製フィルムにトップシールを貼着し、前記収容部を被覆する組立紙容器の製造装置であって、
前記トップシールの上方に配置されるシールヘッドと、
前記組立紙容器の下方に配置されるシールバケットと、を備え、
前記シールバケット上部は弾性部材からなり、
前記シールバケット下部は硬質部材からなること
を特徴とする組立紙容器の製造装置。
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Citations (7)
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US4718596A (en) * | 1986-04-17 | 1988-01-12 | Michael Horauf Maschinenfabrik Gmbh & Co. Kg | Folding tray |
JPH06293334A (ja) | 1993-01-28 | 1994-10-21 | Westvaco Corp | 包装容器及びそのブランク |
JPH07228383A (ja) * | 1994-02-15 | 1995-08-29 | Toppan Printing Co Ltd | 重ねシート装着装置 |
JPH1128773A (ja) * | 1997-07-10 | 1999-02-02 | Fuji Seal Co Ltd | 包装袋の製造方法、並びに包装体の製造方法及び製造装置 |
JPH11138663A (ja) * | 1997-11-14 | 1999-05-25 | Toppan Printing Co Ltd | 紙製トレー状容器の組立方法及びその組立装置 |
JP2000255562A (ja) * | 1999-03-05 | 2000-09-19 | Toppan Printing Co Ltd | 紙トレー |
JP2019172339A (ja) | 2018-03-29 | 2019-10-10 | 東罐興業株式会社 | 組立紙容器及び組立紙容器の製造方法 |
-
2022
- 2022-06-17 KR KR1020227037077A patent/KR20230092823A/ko not_active Application Discontinuation
- 2022-06-17 CN CN202280066435.9A patent/CN118055886A/zh active Pending
- 2022-06-17 EP EP22906897.8A patent/EP4450412A1/en active Pending
- 2022-06-17 JP JP2023567521A patent/JPWO2023112360A1/ja active Pending
- 2022-06-17 WO PCT/JP2022/024308 patent/WO2023112360A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4718596A (en) * | 1986-04-17 | 1988-01-12 | Michael Horauf Maschinenfabrik Gmbh & Co. Kg | Folding tray |
JPH06293334A (ja) | 1993-01-28 | 1994-10-21 | Westvaco Corp | 包装容器及びそのブランク |
JPH07228383A (ja) * | 1994-02-15 | 1995-08-29 | Toppan Printing Co Ltd | 重ねシート装着装置 |
JPH1128773A (ja) * | 1997-07-10 | 1999-02-02 | Fuji Seal Co Ltd | 包装袋の製造方法、並びに包装体の製造方法及び製造装置 |
JPH11138663A (ja) * | 1997-11-14 | 1999-05-25 | Toppan Printing Co Ltd | 紙製トレー状容器の組立方法及びその組立装置 |
JP2000255562A (ja) * | 1999-03-05 | 2000-09-19 | Toppan Printing Co Ltd | 紙トレー |
JP2019172339A (ja) | 2018-03-29 | 2019-10-10 | 東罐興業株式会社 | 組立紙容器及び組立紙容器の製造方法 |
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JPWO2023112360A1 (ja) | 2023-06-22 |
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