EP0276893B1 - Flanc pour récipient étanche en forme de parallélépipède rectangle fait en carton laminé - Google Patents

Flanc pour récipient étanche en forme de parallélépipède rectangle fait en carton laminé Download PDF

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Publication number
EP0276893B1
EP0276893B1 EP19880200135 EP88200135A EP0276893B1 EP 0276893 B1 EP0276893 B1 EP 0276893B1 EP 19880200135 EP19880200135 EP 19880200135 EP 88200135 A EP88200135 A EP 88200135A EP 0276893 B1 EP0276893 B1 EP 0276893B1
Authority
EP
European Patent Office
Prior art keywords
blank
ear
triangular
score
side wall
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.)
Expired - Lifetime
Application number
EP19880200135
Other languages
German (de)
English (en)
Other versions
EP0276893A1 (fr
Inventor
Katsuhiro Joo
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.)
Shikoku Kakoki Co Ltd
Original Assignee
Shikoku Kakoki 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11794207&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0276893(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Shikoku Kakoki Co Ltd filed Critical Shikoku Kakoki Co Ltd
Publication of EP0276893A1 publication Critical patent/EP0276893A1/fr
Application granted granted Critical
Publication of EP0276893B1 publication Critical patent/EP0276893B1/fr
Anticipated expiration legal-status Critical
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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
    • B65D5/40—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 specially constructed to contain liquids
    • 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
    • B65D5/02—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/06—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
    • B65D5/064—Rectangular containers having a body with gusset-flaps folded outwardly or adhered to the side or the top of the container

Definitions

  • the present invention relates to a blank for a rectangular parallelepipedal sealed container of paper-base laminate for containing milk or the like.
  • the blank is formed with a predetermined pattern of fold-forming scores along which the blank is to be bent to make a container.
  • the blank is made into a rectangular parallelepipedal container by bending the blank along the scores and joining the required portions together.
  • the process for making the container includes the step of downwardly bending triangular ears projecting horizontally from the main body of the container and attaching the ears to a pair of side walls of the container main body.
  • the triangular ear is bent along a score included in the conventional pattern, the ear tends to revert to its original position due to springback, so that a great force is required to attach the triangular ear to the main body side wall so as to hold the ear folded over the side wall.
  • the main object of the invention is to provide a container blank having an improved pattern of fold lines to minimize the springback force of the triangular ears and to thereby diminish the force required for attaching the ears to the container main body.
  • the present invention provides a blank for a rectangular parallelepipedal sealed container which is made of paper-base laminate and which has a container main body including two opposed side walls, and two triangular ears integral with the upper ends of the respective side walls and each attached to the side wall, each of the triangular ears being downwardly folded over the side wall from a horizontally projecting initial position.
  • the blank is formed with a single downwardly bulging arcuate fold-forming score at the boundary between the portion providing each of the side walls and the portion forming the triangular ear.
  • each triangular ear is formed by bending the blank of the invention along the score, the side wall integral with the base portion of the ear is curved to an inward arcuate form in a horizontal section.
  • the presence of the curved portion serves to diminish the springback force of the triangular ear, consequently reducing the force required for attaching the ear to the side wall.
  • the container comprises a main body 11 which, when seen from above,is in the form of a rectangle having a larger dimension in the right-to-left direction than in the front-to-rear direction, and two left and right triangular ears 12, 13.
  • the term “front” refers to the obliquely rightwardly downward direction, and the term “rear” to the opposite direction.
  • the terms “right” and “left” are used as the container is viewed from the front rearward.
  • the container main body 11 also has two triangular ears on the bottom, these ears are not shown.
  • the main body 11 has front, rear, left and right side walls 14 to 17, and a top wall 18.
  • the bottom wall is not shown in Fig. 4.
  • a seal portion 19 extends over the top wall 18 and the left and right triangular ears 12, 13. Since the left and right triangular ears 12, 13 are identical, the left ear 12 will be described.
  • the left triangular ear 12 comprises a rear portion 21 integral with the upper end of the left side wall 16 and a front portion 22 integral with the left end of the top wall 18 and has twice the thickness of the container blank. Both the portions 21 and 22 are downwardly folded over the left side wall 16 at the base end of the ear. The folded-over rear portion 21 is partially attached to the left side wall 21 (see Figs. 5 and 6).
  • Fig. 1 shows the upper half of the blank as it is seen from one side thereof providing the exterior of the container.
  • the blank is in the form of a paper-base laminate which is well known.
  • the laminate comprises a thermoplastic synthetic resin layer, paper layer, adhesive layer, aluminum foil layer and thermoplastic synthetic resin layer which are laminated to one another into a sheet.
  • the blank has a predetermined pattern of fold-forming scores made by impression with a press or the like. The pattern is a known one with the exception of the following feature.
  • a score 35 (36) downwardly bulging to an arcuate form is formed at the boundary between each of the portions 31, 32 providing the left and right side walls 16, 17 and each of the portions 33, 34 forming the left and right triangular ears 12, 13.
  • the conventional scores corresponding to these scores 35, 36 were each in the form of a straight line.
  • Fig. 2 shows one of the scores 35, 36, i.e., the score 35, on an enlarged scale.
  • the score 35 is smoothly curved in the form of a circular arc, with the result that the portion 33 to be formed into the triangular ear 12 has a projection 38 projecting downward from a straight line 37 through the two ends of the score 35.
  • the amount or width h of the projection 38 is about one to two times the thickness of the blank.
  • the score which is in the form of a smooth curve as stated above, may alternatively be V-shaped as shown in Fig. 3.
  • Figs. 5 and 6 show as exaggerated how the triangular ear 12 is bent during the process for forming the container.
  • Fig. 5 shows the ear 12 in a horizontally projecting state, with the rear portion 21 of the ear 12 bent along the score 35 at an angle of 90 degrees with the side wall 16. Owing to the bending, the side wall 16 is inwardly pushed by the downward projection 38 included in the ear forming portion 33, with the result that the upper portion of the side wall 16 including its upper edge is inwardly curved.
  • the triangular ear 12 in the state of Fig. 5 is downwardly bent to the position shown in Fig. 6, the side wall 16 is bent to a greater extent.
  • FIG. 8 shows a triangular ear 41 bent along a score of conventional pattern.
  • the side wall 42 remains planar despite the bending of the ear 41, so that the springback force of the triangular ear 41 directly acts to raise the ear 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Claims (2)

  1. Ebauche pour un récipient fermé hermétiquement en forme de parallélépipède rectangle (11) fait d'un matériau stratifié à base de papier et comportant un corps principal de récipient qui comprend deux parois latérales opposées (16, 17) et deux oreilles triangulaires (12, 13) solidaires des extrémités supérieures des parois latérales respectives, et respectivement reliées à la paroi latérale, chacune des oreilles triangulaires étant repliée vers le bas par dessus la paroi latérale à partir d'une postion initiale faisant saillie horizontalement, caractérisée en ce que l'ébauche comporte une seule marque de formage de pli (35, 36) arquée, renflée vers le bas, au niveau de la limite entre la partie définissant chacune des parois latérales (16, 17) et la partie (21) formant l'oreille triangulaire (12, 13).
  2. Ebauche selon la revendication 1, dans laquelle la distance comprise entre la partie médiane de la marque (35, 36) et une ligne droite (37) passant par les deux extrémités de la marque est égale à une à deux fois l'épaisseur de l'ébauche.
EP19880200135 1987-01-28 1988-01-27 Flanc pour récipient étanche en forme de parallélépipède rectangle fait en carton laminé Expired - Lifetime EP0276893B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1203087U JPH0318330Y2 (fr) 1987-01-28 1987-01-28
JP12030/87 1987-01-28

Publications (2)

Publication Number Publication Date
EP0276893A1 EP0276893A1 (fr) 1988-08-03
EP0276893B1 true EP0276893B1 (fr) 1992-01-15

Family

ID=11794207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880200135 Expired - Lifetime EP0276893B1 (fr) 1987-01-28 1988-01-27 Flanc pour récipient étanche en forme de parallélépipède rectangle fait en carton laminé

Country Status (3)

Country Link
EP (1) EP0276893B1 (fr)
JP (1) JPH0318330Y2 (fr)
DE (1) DE3867642D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD420907S (en) 1998-09-02 2000-02-22 Tetra Laval Holdings & Finance, Sa Beveled edge carton

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020356A1 (de) * 1990-06-27 1992-01-09 Pi Patente Gmbh Recyclingbarer behaelter, dessen inhalt die steifigkeit des behaelters unterstuetzt, sowie recycling-verfahren fuer den behaelter
TW264451B (fr) * 1992-07-28 1995-12-01 M Pak Ltd
US5474232A (en) * 1994-05-06 1995-12-12 Ljungstroem; Tommy B. G. Gable top carton and carton blank with curved side creases
US5738272A (en) * 1996-03-21 1998-04-14 Tetra Laval Holdings & Finance S.A. Gable top carton and carton blank having reduced surface area per unit volume
US5860588A (en) * 1996-12-13 1999-01-19 Tetra Laval Holdings & Finance, Sa Stackable gable top carton and corresponding top interlocking carton blank
JP4762632B2 (ja) * 2005-08-04 2011-08-31 レンゴー株式会社 厚紙製包装箱
JP6131531B2 (ja) * 2012-05-17 2017-05-24 凸版印刷株式会社 カップ型紙容器
JP2013237478A (ja) * 2012-05-17 2013-11-28 Toppan Printing Co Ltd カップ型紙容器
JP2020142839A (ja) * 2019-03-07 2020-09-10 日本製紙株式会社 紙容器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166235A (en) * 1964-04-03 1965-01-19 Marriott Hot Shoppes Inc Flat-foldable food box
SE424175B (sv) * 1978-11-21 1982-07-05 Tetra Pak Int Forpackningsbehallare samt emne for dess tillverkning
US4362245A (en) * 1979-12-10 1982-12-07 American Can Company Liquid tight pouring carton

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD420907S (en) 1998-09-02 2000-02-22 Tetra Laval Holdings & Finance, Sa Beveled edge carton

Also Published As

Publication number Publication date
DE3867642D1 (de) 1992-02-27
JPH0318330Y2 (fr) 1991-04-18
JPS63120816U (fr) 1988-08-04
EP0276893A1 (fr) 1988-08-03

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