WO2021186764A1 - 組立式紙容器 - Google Patents

組立式紙容器 Download PDF

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Publication number
WO2021186764A1
WO2021186764A1 PCT/JP2020/033076 JP2020033076W WO2021186764A1 WO 2021186764 A1 WO2021186764 A1 WO 2021186764A1 JP 2020033076 W JP2020033076 W JP 2020033076W WO 2021186764 A1 WO2021186764 A1 WO 2021186764A1
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WO
WIPO (PCT)
Prior art keywords
paper container
flange portion
assembled
flange
rib portion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/033076
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
武口　史郎
諒太 河野
将 武井
友一 貝森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokan Kogyo Co Ltd
Original Assignee
Tokan Kogyo 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 Tokan Kogyo Co Ltd filed Critical Tokan Kogyo Co Ltd
Priority to JP2022508035A priority Critical patent/JP7354412B2/ja
Priority to KR1020227035363A priority patent/KR102792085B1/ko
Priority to CN202080081677.6A priority patent/CN114728716B/zh
Priority to EP20926095.9A priority patent/EP4122837A4/en
Publication of WO2021186764A1 publication Critical patent/WO2021186764A1/ja
Anticipated expiration legal-status Critical
Priority to JP2023102474A priority patent/JP7622144B2/ja
Ceased legal-status Critical Current

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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
    • B65D5/20—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
    • B65D5/2014—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 a non rectangular shape
    • B65D5/2033—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 a non rectangular shape polygonal having more than four sides, e.g. hexagonal, octogonal
    • 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
    • B65D5/24—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 with adjacent sides interconnected by gusset folds
    • B65D5/241—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 with adjacent sides interconnected by gusset folds and the gussets folds connected to the inside of the container body
    • B65D5/243—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 with adjacent sides interconnected by gusset folds and the gussets folds connected to the inside of the container body the container body comprising a continuous rim or flange
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0201—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together side-by-side
    • B65D21/0202—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together side-by-side and loosely interengaged by integral complementary shapes
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0233—Nestable containers
    • 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
    • B65D5/2038—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 at least two opposed folded-up portions having a non-rectangular shape
    • B65D5/2047—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 at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side walls
    • 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
    • B65D5/28—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 with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
    • 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
    • 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

  • An embodiment of the present invention relates to an assembling paper container.
  • a prefabricated paper container in which a tray-shaped container body having a flange at the upper end is assembled from a blank sheet made of paper whose main raw material is paper.
  • Some prefabricated paper containers have a resinous thermoplastic resin film attached to the inner surface of the container body and the upper surface of the flange portion (Patent Documents 1 and 2). Since the prefabricated paper container with a resin film has a resin property, it is mainly used as a tray or a ball for storing foods and the like.
  • assembling paper containers are environmentally friendly products that can suppress the generation of secondary microplastics that occur in the environment, for example, compared to plastic containers.
  • the resin film can be peeled off from the container body, the resin film and the container body, that is, paper can be separated, and the resin film and the container body can be recycled respectively.
  • MAP Modified Atmosphere Packaging
  • MAP is applied to the prefabricated paper container, and it is expected to be used as a packaging container for foods and a storage container for foods and the like.
  • Assembled paper containers are shipped in stacks, for example, 50 pieces, for each unit number.
  • the weight of the upper container is applied to the lower container.
  • the accommodating portions are deeply fitted to each other and the container is difficult to come off.
  • An embodiment of the present invention provides an assembling paper container capable of suppressing a situation in which the containers are difficult to come off even when stacked.
  • the assembly-type paper container according to the first aspect of the present invention is an assembly-type paper container assembled from a blank sheet containing paper as a main material, and the assembly-type paper container has a bottom surface and a plurality of rising from the bottom surface. It has a side surface and a flange portion whose upper surface is flush with each other after being assembled by connecting to the plurality of side surfaces, and the side surface below the flange portion has a thickness in the height direction and is formed from the side surface. A rib portion extending toward the edge of the flange portion is provided.
  • the rib portion is integrally molded with one of the side surfaces, and the rib portion integrally molded with the side surface is the said. It is characterized by being flat with respect to the side surface.
  • the assembled paper container according to the third aspect of the present invention is characterized in that, in the second aspect, the upper end portion of the rib portion is bent toward the edge of the flange portion together with the side surface.
  • the rib portion is integrally molded with one of the side surfaces, and the rib portion integrally molded with the side surface is the said. It is characterized by being bent with respect to the side surface.
  • the assembled paper container according to the fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the upper end corner portion of the rib portion is rounded.
  • the lower end of the rib portion has a thickness in the height direction toward the edge of the flange portion. It is characterized by being inclined so as to be thin.
  • the assembled paper container according to the seventh aspect of the present invention has, in any one of the first to sixth aspects, the plurality of side surfaces, a plurality of flange portion molding side surfaces and the flange portion molding side surfaces.
  • the rib portion is integrally molded with the bonding side surface, including a bonding side surface for bonding the sheets.
  • the assembly-type paper container according to the eighth aspect of the present invention is an assembly-type paper container assembled from a blank sheet containing paper as a main material, and the assembly-type paper container has a bottom surface and a plurality of rising from the bottom surface. It has a side surface and a flange portion whose upper surface is flush with each other after being assembled by connecting to the plurality of side surfaces.
  • the bonding side surface including the bonding side surface for bonding, and the bonding side surface below the flange portion has a rib portion in which an intermediate portion of the bonding side surface is valley-folded so as to generate a thickness in the height direction. It is characterized in that it is provided.
  • the assembly-type paper container according to the ninth aspect of the present invention is an assembly-type paper container assembled from a blank sheet containing paper as a main material, and the assembly-type paper container has a bottom surface and a plurality of rising from the bottom surface. It has a side surface and a flange portion whose upper surface is flush with each other after being assembled by connecting to the plurality of side surfaces.
  • the side surface for forming the flange portion below the flange portion includes an intermediate section located in the middle of the mountain fold portion that separates the flange portion and the side surface, including the side surface for bonding to be bonded.
  • a rib portion including a valley fold forming portion that is valley-folded downward of the flange portion and a mountain-folding forming portion that is mountain-folded on the side surface for forming the flange portion is provided so as to generate thickness in the direction.
  • the length of the mountain fold is made different from the length of the mountain fold molded portion, and the flange portion is overlapped with the rib portion.
  • the assembled paper container according to the first to seventh aspects has a rib portion having a thickness in the height direction on the side surface below the flange portion and extending from the side surface toward the edge of the flange portion.
  • the rib portion separates the lower assembly-type paper container from the upper assembly-type paper container by the thickness in the height direction.
  • the assembly-type paper container according to the eighth aspect has a rib portion on the bonding side surface below the flange portion, in which the middle portion of the bonding side surface is valley-folded so as to generate thickness in the height direction.
  • the rib portion separates the lower assembly-type paper container from the upper assembly-type paper container by the thickness in the height direction.
  • a thickness is formed in the height direction on the side surface for forming the flange portion below the flange portion in an intermediate section located in the middle of the mountain fold portion that separates the flange portion and the side surface. It has a rib portion including a valley fold molding portion that is valley-folded downward of the flange portion and a mountain fold molding portion that is mountain-folded on the side surface for molding the flange portion. The rib portion separates the lower assembly-type paper container from the upper assembly-type paper container by the thickness in the height direction.
  • the assembling type paper container according to the ninth aspect it is possible to obtain an assembling type paper container that can suppress the situation that the containers are difficult to come off even if they are stacked. Further, according to the assembling type paper container according to the ninth aspect, the length of the valley fold molding portion and the length of the mountain fold molding portion of the rib portion are made different, and the flange portion overlaps with the rib portion. As a result, it is possible to suppress the situation where the rib portion of the upper assembly type paper container is fitted to the rib portion of the lower assembly type paper container.
  • FIG. 1A is a perspective view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 1B is a side view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 1C is a bottom view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 2 is a plan view showing an example of a blank sheet.
  • FIG. 3 is a plan view showing an example in which the accommodating portion is covered with a top seal.
  • FIG. 4A is a side view of the assembled paper containers according to the reference example when they are stacked.
  • FIG. 4B is a side view of the assembled paper containers according to the first embodiment when they are stacked.
  • FIG. 5 is a bottom view showing an example of an assembly-type paper container according to the first modification.
  • FIG. 1A is a perspective view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 1B is a side view showing an example of an assembly-type paper container according to
  • FIG. 6 is a bottom view showing an example of an assembly-type paper container according to the second modification.
  • 7 (a) and 7 (b) are side views showing a rib portion of the assembled paper container according to the first embodiment.
  • FIG. 7C is a side view showing the rib portion of the assembly-type paper container according to the third modification.
  • 8 (a) and 8 (b) are side views showing the rib portion of the assembled paper container according to the second modification.
  • FIG. 8C is a side view showing a rib portion of the assembly-type paper container according to the fourth modification.
  • FIG. 9 is a cross-sectional view showing an example of a rib portion of the assembly-type paper container according to the second embodiment.
  • FIG. 10 is a side view showing an example of an assembly-type paper container according to the third embodiment.
  • FIG. 11A is a plan view showing the rib portion.
  • FIG. 11B is a cross-sectional view taken along the line XIB-XIB in FIG. 11A.
  • FIG. 11 (c) is a cross-sectional view taken along the line XIC-XIC in FIG. 11 (a).
  • FIG. 1A is a perspective view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 1B is a side view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 1C is a bottom view showing an example of an assembly-type paper container according to the first embodiment.
  • FIG. 2 is a plan view showing an example of a blank sheet.
  • the assembly-type paper container 1 shown in FIGS. 1A to 1C is assembled from the blank sheet 2 shown in FIG.
  • the blank sheet 2 is mainly made of paper.
  • the dotted line indicates “valley fold” and the alternate long and short dash line indicates “mountain fold”.
  • the valley fold line and the mountain fold line consist of, for example, perforations, half-cuts, ruled lines, and the like.
  • a thick solid line indicates a "cut”.
  • the prefabricated paper container 1 includes a container body 11 and a resin film 3.
  • the container body 11 includes a housing portion 12 and a flange portion 13.
  • the container body 11 has a bottom surface 121 and a plurality of side surfaces 122 rising from the bottom surface 121.
  • the accommodating portion 12 is composed of a bottom surface 121 and a plurality of side surfaces 122. There are eight side surfaces 122 in this embodiment. If there are three or more side surfaces 122, the accommodating portion 12 can be formed.
  • the side surface 122 alternately includes four flange portion forming side surfaces 122a and four bonding side surface 122b around the accommodating portion 12.
  • the bonding side surface 122b is a side surface for bonding the flange portion forming side surfaces 122a to each other.
  • the accommodating portion 12 is rectangular when viewed from a plane, and the bonding side surface 122b is located corresponding to the four corners of the rectangular accommodating portion 12.
  • the flange portion 13 is connected outward from the accommodating portion 12 to the upper end of each side surface 122.
  • the flange portion 13 has an upper surface 131.
  • the upper surface 131 of the flange portion 13 becomes flush with each other after assembly.
  • the gap 22 is formed on the upper surface 131 when the end faces 21 of the blank sheet 2 are close to each other after assembly.
  • the resin film 3 covers the inner surface of the accommodating portion 12, the inner surface of the side surface 122, and the upper surface 131 of the flange portion 13.
  • a film having watertightness and gas dissipation is selected.
  • An example of such a resinous film 3 is, for example, a thermoplastic resin film.
  • thermoplastic resin films include polyolefins such as polyethylene (PE) and polypropylene (PP), polyvinylidene chloride, polyesters such as polyethylene terephthalate (PET), ethylene-vinyl acetate copolymer (EVA), and ethylene-acrylic.
  • the resin film 3 may be a single film of any of the above materials, or may be a film in which a plurality of the above materials are mixed. Further, the resin film 3 may be a single-layer film or a laminated film in which a plurality of layers are laminated.
  • FIG. 3 is a plan view showing an example in which the accommodating portion is covered with a top seal.
  • the prefabricated paper container 1 can wrap food and the like and store it in the storage unit 12 by covering the storage unit 12 with the top seal 4.
  • the top seal 4 is attached to the resin film 3 on the upper surface 131 of the flange portion 13. As a result, the top seal 4 covers the accommodating portion 12.
  • a pressing machine for example, a seal head
  • the pressing machine presses the top seal 4 in the region shown in the pressing region 32.
  • the assembled paper container 1 has a rib portion 5 on a side surface 122 below the flange portion 13.
  • the rib portion 5 has a thickness t in the height direction and extends from the side surface 122 toward the edge of the flange portion 13.
  • the rib portion 5 of this embodiment is integrally molded with one of the side surfaces 122, and the rib portion 5 integrally molded with the side surface 122 is flat with respect to the side surface 122.
  • the rib portion 5 of this embodiment is integrally molded with the bonding side surface 122b.
  • the rib portion 5 formed on the bonding side surface 122b has a part of the bonding side surface 122b in the state of the blank sheet 2 toward the flange portion molding side surface 122a, for example, a tongue. It can be obtained by projecting in a piece shape. As a result, the rib portion 5 can be obtained from one blank sheet 2 together with the flange portion forming side surface 122a and the bonding side surface 122b.
  • the flange portion molding side surfaces 122a are bonded to each other on the outside of the flange portion molding side surface 122a.
  • the rib portion 5 can be projected below the flange portion 13 to the outside of the flange portion forming side surface 122a toward the edge of the flange portion 13.
  • FIG. 4A is a side view of the assembled paper containers according to the reference example when they are stacked.
  • FIG. 4B is a side view of the assembled paper containers according to the first embodiment when they are stacked.
  • the assembled paper container 1r according to the reference example does not have a rib portion. Therefore, when the assembled paper containers 1r are stacked, the weight of the upper assembled paper container 1r is applied to the lower assembled paper container 1r. Therefore, in the lower assembly type paper container 1r, the accommodating portions 12 are deeply fitted to each other, and the assembly type paper container 1r is difficult to come off.
  • the assembled paper container 1 according to the first embodiment has a rib portion 5.
  • the rib portion 5 separates the lower assembled paper container 1 from the upper assembled paper container 1 by the thickness t in the height direction.
  • the thickness t in the height direction is thinner than the depth of the accommodating portion 12.
  • the interval for separating the assembled paper containers 1 from each other can be arbitrarily set according to the value of the thickness t in the height direction.
  • the situation in which the accommodating portions 12 are deeply fitted with each other is suppressed as compared with the reference example. Therefore, according to the prefabricated paper container 1, it is possible to obtain the prefabricated paper container 1 capable of suppressing the situation in which the prefabricated paper container 1 is difficult to come off even when stacked.
  • FIG. 5 is a bottom view showing an example of an assembly-type paper container according to the first modification.
  • the bottom view shown in FIG. 5 corresponds to the bottom view shown in FIG. 1 (c).
  • the upper end portion 5u of the rib portion 5 may be bent toward the edge of the flange portion 13 together with the side surface 122.
  • the upper end portion 5u of the rib portion 5 is bent together with the bonding side surface 122b.
  • the upper end portion 5u of the rib portion 5 When the upper end portion 5u of the rib portion 5 is bent together with the side surface 122, the upper end portion 5u of the rib portion 5 becomes integral with the side surface 122 below the flange portion 13. In this example, the upper end portion 5u is integrated with the bonding side surface 122b. Therefore, as compared with the case where the upper end portion 5u is not bent together with the bonding side surface 122b, a force resisting the force for deforming the rib portion 5 is generated in the rib portion 5. Therefore, the rigidity of the rib portion 5 is further increased.
  • the assembled paper containers 1 are stacked due to the higher rigidity of the rib portion 5, it is possible to prevent the rib portion 5 from being deformed by the weight of the assembled paper container 1. For example, when the rib portion 5 is deformed, the rib portion 5 may fall into the accommodating portion 12, and the accommodating portions 12 may be deeply fitted to each other. According to the first modification, such a possibility can be further suppressed.
  • FIG. 6 is a bottom view showing an example of an assembly-type paper container according to the second modification.
  • the bottom view shown in FIG. 6 corresponds to the bottom view shown in FIG. 1 (c).
  • the rib portion 5 when the rib portion 5 is integrally molded with one of the side surfaces 122, the rib portion 5 may be bent with respect to the side surface 122.
  • An example of bending is bending in a direction away from the accommodating portion 12.
  • the rib portion 5 is integrally molded with the bonding side surface 122b. The rib portion 5 is bent in a direction away from the accommodating portion 12 on the bonding side surface 122b.
  • the rib portion 5 By bending the rib portion 5 in the direction away from the accommodating portion 12, the rib portion 5 is deformed toward the accommodating portion 12 and the rib portion 5 is deformed as compared with the case where the rib portion 5 is flattened with respect to the side surface 122. It is possible to suppress the situation in which the sill falls into the accommodating portion 12. For example, when the rib portion 5 falls into the accommodating portion 12, the accommodating portions 12 are deeply fitted to each other. According to the second modification, such a situation can be further suppressed.
  • FIGS. 7 (a) and 7 (b) are side views showing a rib portion of the assembled paper container according to the first embodiment.
  • FIG. 7C is a side view showing the rib portion of the assembly-type paper container according to the third modification. Note that FIGS. 7 (a) to 7 (c) correspond to the side surfaces viewed in the direction of arrow XII in FIG. 1 (c).
  • the upper end corner portion 5 uc of the rib portion 5 may be deformed when the flange portion 13 is deformed downward DD. be.
  • the upper end corner portion 5 uc is deformed in the downward direction DD, there is a possibility that the rib portion 5 may be depressed toward the inside of the accommodating portion 12 depending on the deformed state. Therefore, the accommodating portions 12 are deeply fitted to each other.
  • the upper end corner portion 5 uc of the rib portion 5 is rounded, and the upper end corner portion 5 uc is rounded.
  • the rib portion 5 is deformed due to the roundness of the upper end corner portion 5 uc. It becomes difficult to do. Therefore, for example, even if the flange portion 13 is unexpectedly deformed, the deformation of the rib portion 5 accompanying the deformation can be suppressed. According to the third modification, such a situation can be further suppressed.
  • the upper end corner portion 5 uc may be rounded. If the upper end corner 5 uc is angular, it is difficult to cut. The angular corners are a singular point for making cuts. The singularity is difficult to cut and mold. The singularity depends on the strength and material of the blank sheet 2 containing paper as the main component, but for example, there is a considerable possibility that the blank sheet 2 will be torn at the time of cutting or molding.
  • the upper end corner portion 5 uc is rounded to form a curved line, that is, a round shape. Thereby, it is also possible to suppress the tearing of the blank sheet 2.
  • the tearing of the blank sheet 2 is a phenomenon that can occur when the rib portion 5 is in the shape of a small tongue piece and the blank sheet 2 is directly folded in a mountain or valley without cutting out the blank sheet 2. ..
  • the third modification can be applied to the first modification and the second modification in addition to the first embodiment. Further, although the third modification refers to the first embodiment for comparison, the third modification does not deny the first embodiment. Whether to adopt the first embodiment or the third modification is a selection item that the practitioner can arbitrarily select.
  • FIG. 8 (Fourth modification) 8 (a) and 8 (b) are side views showing the rib portion of the assembled paper container according to the second modification.
  • FIG. 8C is a side view showing a rib portion of the assembly-type paper container according to the fourth modification. 8 (a) to 8 (c) correspond to the side surfaces seen in the direction of arrow VIII in FIG.
  • the flange portion 13 is often slightly inclined upward from the horizontal HD in the housing portion 12 in practice.
  • the inclination angle of the flange portion 13 from the horizontal HD is set to “ ⁇ 13”.
  • the lower end 5l of the rib portion 5 is inclined so that the thickness t in the height direction gradually becomes thinner toward the edge of the flange portion 13.
  • the inclination angle of the lower end 5 liters from the horizontal HD is set to “ ⁇ 5”.
  • An example of the inclination angle ⁇ 5 is an inclination angle ⁇ 13 or more ( ⁇ 5 ⁇ ⁇ 13).
  • the deformation of the lower end corner portion 5 lc can be suppressed, and for example, the deep fit between the accommodating portions 12 due to the deformation of the lower end corner portion 5 lc can be suppressed.
  • the fourth modification can be applied to the first embodiment, the first modification, and the third modification in addition to the second modification. Further, although the fourth modification refers to the second modification for comparison, the fourth modification does not deny the second modification. Whether to adopt the second modification or the fourth modification is a selection item that the practitioner can arbitrarily select.
  • FIG. 9 is a cross-sectional view showing an example of a rib portion of the assembly-type paper container according to the second embodiment.
  • the intermediate portion 122bm of the bonding side surface 122b is valley-folded so as to generate a thickness t in the height direction.
  • a rib portion 5b that is integrally molded with the bonding side surface 122b and has a thickness t in the height direction can be obtained.
  • the rib portion 5b having a thickness t in the height direction can separate the lower assembled paper container 1b from the upper assembled paper container 1b.
  • the situation in which the accommodating portions 12 are deeply fitted to each other is suppressed. Therefore, according to the prefabricated paper container 1b, it is possible to obtain the prefabricated paper container 1b capable of suppressing the situation in which the prefabricated paper container 1b is difficult to come off even when stacked, as in the first embodiment.
  • FIG. 10 is a side view showing an example of an assembly-type paper container according to the third embodiment.
  • FIG. 11A is a plan view showing the rib portion.
  • FIG. 11B is a cross-sectional view taken along the line XIB-XIB in FIG. 11A.
  • FIG. 11 (c) is a cross-sectional view taken along the line XIC-XIC in FIG. 11 (a).
  • the flange portion 13 and the side surface 122 of the flange portion forming side surface 122a are separated.
  • the intermediate section 123m located in the middle of the mountain fold portion 123 is valley-folded downward of the flange portion 13 so as to generate a thickness t in the height direction.
  • a rib portion 5c that is integrally molded with the flange portion forming side surface 122a and has a thickness t in the height direction is obtained.
  • the rib portion 5c having a thickness t in the height direction can separate the lower assembled paper container 1c from the upper assembled paper container 1c.
  • the situation in which the accommodating portions 12 are deeply fitted to each other is suppressed. Therefore, according to the prefabricated paper container 1c, as in the first and second embodiments, it is possible to obtain the prefabricated paper container 1c capable of suppressing the situation in which the prefabricated paper container 1c is difficult to come off even when stacked. Can be done.
  • the rib portion 5c is integrally formed with the flange portion forming side surface 122a by, for example, valley-folding the flange portion forming side surface 122a corresponding to the intermediate section 123m and further mountain-folding. That is, the rib portion 5c is obtained by three-dimensionally extruding the portion corresponding to the intermediate section 123m of the flange portion forming side surface 122a toward the lower side of the flange portion 13. Therefore, the rib portion 5c includes a valley fold forming portion 51 in which the intermediate section 123m is valley-folded, and a mountain fold forming portion 52 in which the flange portion molding side surface 122a is mountain-folded.
  • the length L51 is made longer than the length L52 so that the mountain fold forming portion 52 is included in the range of the valley fold forming portion 51 when viewed from a plane.
  • the flange portion 13 has an overlapping portion 13o that overlaps with the rib portion 5c.
  • the length L51 may be shorter than the length L52.
  • the rib portion 5c of the upper assembly type paper container 1c fits into the rib portion 5c of the lower assembly type paper container 1c. It is also possible to suppress the situation where it fits.
  • the mountain fold forming portion 52 is generated on both the flange portion 13 and the side surface 122. Of these two mountain fold forming portions 52, if the length L52 of the mountain fold forming portion 52 generated at least in the flange portion 13 is different from the length L51 of the valley fold forming portion 51, the overlapping portion 13o is ribbed. It can be provided in 5c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stackable Containers (AREA)
  • Cartons (AREA)
PCT/JP2020/033076 2020-03-18 2020-09-01 組立式紙容器 Ceased WO2021186764A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2022508035A JP7354412B2 (ja) 2020-03-18 2020-09-01 組立式紙容器
KR1020227035363A KR102792085B1 (ko) 2020-03-18 2020-09-01 조립식 종이 용기
CN202080081677.6A CN114728716B (zh) 2020-03-18 2020-09-01 组装式纸容器
EP20926095.9A EP4122837A4 (en) 2020-03-18 2020-09-01 ASSEMBLYABLE PAPER CONTAINER
JP2023102474A JP7622144B2 (ja) 2020-03-18 2023-06-22 組立式紙容器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-047582 2020-03-18
JP2020047582 2020-03-18

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WO2021186764A1 true WO2021186764A1 (ja) 2021-09-23

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EP (1) EP4122837A4 (enExample)
JP (2) JP7354412B2 (enExample)
KR (1) KR102792085B1 (enExample)
CN (1) CN114728716B (enExample)
WO (1) WO2021186764A1 (enExample)

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WO2025096701A1 (en) * 2023-11-01 2025-05-08 Graphic Packaging International, Llc Container with flange
IT202300024858A1 (it) * 2023-11-23 2025-05-23 Lic Packaging S P A Vaschetta in cartone di forma ottagonale con flangia termosaldabile

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KR20220149786A (ko) 2022-11-08
JPWO2021186764A1 (enExample) 2021-09-23
CN114728716B (zh) 2024-09-24
JP2023116795A (ja) 2023-08-22
JP7354412B2 (ja) 2023-10-02
KR102792085B1 (ko) 2025-04-08
EP4122837A4 (en) 2024-05-01
EP4122837A1 (en) 2023-01-25
CN114728716A (zh) 2022-07-08
JP7622144B2 (ja) 2025-01-27

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