EP0277517B1 - A blank having folding lines for forming a container - Google Patents

A blank having folding lines for forming a container Download PDF

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Publication number
EP0277517B1
EP0277517B1 EP88100471A EP88100471A EP0277517B1 EP 0277517 B1 EP0277517 B1 EP 0277517B1 EP 88100471 A EP88100471 A EP 88100471A EP 88100471 A EP88100471 A EP 88100471A EP 0277517 B1 EP0277517 B1 EP 0277517B1
Authority
EP
European Patent Office
Prior art keywords
panel
sealing
blank
wall panels
folding lines
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
EP88100471A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0277517A1 (en
Inventor
Paul Traegaardh
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.)
Tetra Pak AB
Original Assignee
Tetra Pak AB
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 Tetra Pak AB filed Critical Tetra Pak AB
Priority to AT88100471T priority Critical patent/ATE64721T1/de
Publication of EP0277517A1 publication Critical patent/EP0277517A1/en
Application granted granted Critical
Publication of EP0277517B1 publication Critical patent/EP0277517B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4266—Folding lines, score lines, crease lines
    • 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
    • B65D5/067—Gable-top containers

Definitions

  • the invention relates to a blank for forming a container as defined in the preamble portion of claim 1.
  • a blank is known from e.g. EP-A-0 074 340.
  • Blanks of these type are usually used for forming packaging containers containing beverages such as milk or juice, these containers being usually brick shaped or gable-topped containers.
  • Packaging containers of these types are manufactured from a web having paper or cardboard support layers and external liquid-tight plastic layers, sometimes including a layer of further material such as a aluminium foil.
  • the blanks are usually cut from a continuous web which is printed and laminated.
  • the blank is folded along the longitudinal folding lines to form polygonal tube, usually a tube of rectangular or square cross section, the sealing panel is sealed or heat-welded onto a sealing area of one of the side panels, and then the bottom wall portions are folded inwardly and sealed together to form a bottom of the container.
  • the top wall portions are folded and sealed to form a flat or gable top part of the container.
  • the sealing panel When the sealing panel is sealed or heat-welded onto a sealing area of the side panel, longitudinal folding lines formed by creasing, embossing etc. have already been pre-formed in these parts, and at these longitudinal folding lines the sealing panel may not lie sufficiently flat and tight against the corresponding sealing area of the side panel. Faulty or imperfect sealing may occur along these folding lines. Afterwards, when bottom- or top wall portions are folded inwardly along these longitudinal folding lines, the wall material of the overlapping sealing panel and wall panel may be folded away from each other and thereby lose their contact, whereby a leakage along said folding lines may occur.
  • Gaps are provided in the transverse folding lines at positions inside the sealing panel and the corresponding sealing area of the side wall panel, preferably along the free edge of the sealing panel, whereby the overlapping panels will come flatly and closely into contact with each other, will be perfectly sealed or heat-welded to each other even in the area of said gaps, and will maintain the tight sealing condition in said gaps even when the overlapping panels are folded along said folding lines. In other words, any leakage which might occur along said longitudinal folding lines will be stopped or interrupted by virtue of the presence of the aforementioned gaps.
  • a blank for a packaging container is formed out of a lengthy web 1 (usually rolled to form a roll), which is formed of paperboard both sides of which are coated with thermoplastic coating material, which web has two opposite side margin lines 11 and 12 shaped with a repeated pattern over the whole width of each piece of blank, each blank being separated by two straight parallel left and right end margin lines 9 and 10.
  • Each blank is formed such that is has four side wall panels P1, P2, P3, and P4 separated by parallel longitudinal folding lines 2, 2 and 2... and a longitudinal sealing panel P5 with a narrower width between the end margin line 10 and the longitudinal folding line 2 on the outside of the side wall panel P4 on the one side (right side).
  • Panels 3, 3a and 3b for forming a top lid part of packaging container are separated from the upper side of four side wall panels P1, P2, P3 and P4 by upper transverse folding lines 5, and panels 4, 4a and 4b for forming a bottom part of the packaging container are provided on the lower side by way of lower transverse folding line 6 respectively. Additionally, sealing panels 16, 16a,... for forming a sealing fin part of the top are provided on the outside of the top lid forming panels by way of top transverse folding line 7.
  • the blank is first folded to form a square tube, so that the longitudinal folding line 2 defining the longitudinal sealing panel P5 is made to coincide with the end margin line 9 of the side wall panel P1 on the side opposite to said sealing panel P5.
  • the left inner margin area of side wall panel P1 in fig. 2 is a sealing area which is inwardly overlapped by said sealing panel P5.
  • the container bottom part is then formed by folding small triangle panels 4b against the inside of respective opposite main bottom panels 4 provided at the lower part of the blank, said main bottom panels 4 being folded to overlap the outside of opposite large triangle panels 4a and 4a being inwardly folded, using lower transverse folding line 6 as hinges.
  • the lower side margin 12 of the blank is so formed that the boundary line 15 on the outside of main bottom panels 4 is protruding with a convex shape over the boundary line 15′ of the triangle parts 4b, whereby the bottom central parts 17 and 17′ are formed on the main bottom panels 4 between the boundary lines 15 and 15′.
  • the central part 17′ on the one side is insertable between the opposite main bottom panel 4 and its adjoining triangle panel parts 4a and 4b.
  • This construction enables the bottom having a steady and complete sealing property to be obtained after being sealed.
  • a top lid part is sealed and formed such that small triangle panels 3b are arranged to be folded into the inside of opposite main top panels 3 at the top of tubular open packaging container (refer to fig. 2), whereby said main top panels 3 and 3 after folding are located outwardly, and opposite large triangle panels 3a are folded inwardly, respectively, by using the upper transverse folding line 5 as hinge means.
  • opposite sealing panels 16 are overlapped, welded and sealed to form a top sealed fin part with small sealing panels 16a being interposed therebetween (see fig. 3).
  • All the aforementioned folding lines 2, 5, 6, 7, are formed in the usual manner by creasing, embossing etc. as known in the art.
  • a packaging container (fig. 3) is formed from a tubular container material (fig. 2) in this way, the overlapped and welded part of longitudinal sealing panel P5 and the side marginal part of sealing area of opposite side wall panel P1 have to be folded at the respective positions of the three transverse folding lines 5, 6 and 7.
  • gaps or interruptions 8 of the respective folding lines 5, 6 and 7 are provided adjacent the end margin of edges of the sealing panel P5 and at corresponding positions in side wall panel P1. These gaps overlie each other and enable the inside and outside panels P5, P1 along the side margin 10 of the overlapped and welded are a to be folded in a state of being flatly and closely in contact, and thus a state of close contact and sealing is satisfactorily maintained during foldding without destroying the good sealing property over the entire length of the sealing panel P5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Packages (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Amplifiers (AREA)
EP88100471A 1987-02-04 1988-01-14 A blank having folding lines for forming a container Expired - Lifetime EP0277517B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100471T ATE64721T1 (de) 1987-02-04 1988-01-14 Zuschnitt mit faltlinien fuer einen behaelter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15464/87 1987-02-04
JP1987015464U JPS63123421U (enrdf_load_stackoverflow) 1987-02-04 1987-02-04

Publications (2)

Publication Number Publication Date
EP0277517A1 EP0277517A1 (en) 1988-08-10
EP0277517B1 true EP0277517B1 (en) 1991-06-26

Family

ID=11889519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100471A Expired - Lifetime EP0277517B1 (en) 1987-02-04 1988-01-14 A blank having folding lines for forming a container

Country Status (10)

Country Link
EP (1) EP0277517B1 (enrdf_load_stackoverflow)
JP (1) JPS63123421U (enrdf_load_stackoverflow)
AT (1) ATE64721T1 (enrdf_load_stackoverflow)
AU (1) AU592035B2 (enrdf_load_stackoverflow)
CA (1) CA1331749C (enrdf_load_stackoverflow)
DE (1) DE3863362D1 (enrdf_load_stackoverflow)
DK (1) DK164033C (enrdf_load_stackoverflow)
ES (1) ES2022926B3 (enrdf_load_stackoverflow)
FI (1) FI89343C (enrdf_load_stackoverflow)
NO (1) NO170723C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107264911A (zh) * 2016-04-04 2017-10-20 Sig技术股份公司 包装套筒、包装件以及包装件的制造方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9407252D0 (en) * 1994-04-13 1994-06-08 Bowater Pkl Ltd Carton
GB201512926D0 (en) * 2015-07-22 2015-09-02 Webb Ian Methods of manufacture of containers, pre-containers, blanks for containers and containers for retaining fluids
JP6878231B2 (ja) * 2017-09-25 2021-05-26 日本製紙株式会社 液体紙容器
CN112429361B (zh) * 2020-11-18 2023-04-07 乐美包装（昆山）有限公司 包装容器及其坯料

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456613A1 (fr) * 1979-05-16 1980-12-12 Reine Yvan Procede pour fabriquer des emballages pliants a partir d'une feuille de matiere plastique souple, outillage utilise et emballage obtenu
SE449082B (sv) * 1981-08-27 1987-04-06 Tetra Pak Int Forpackningsbehallaremne, sett att tillverka detsamma samt av emnet framstelld forpackningsbehallare
JPS6114984U (ja) * 1984-06-30 1986-01-28 ジューキ株式会社 自動玉縁ミシンの玉布倒れ防止装置
JPS6169544A (ja) * 1984-09-13 1986-04-10 十條製紙株式会社 液体用厚紙容器のブランク

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107264911A (zh) * 2016-04-04 2017-10-20 Sig技术股份公司 包装套筒、包装件以及包装件的制造方法
CN107264911B (zh) * 2016-04-04 2020-10-27 Sig技术股份公司 包装套筒、包装件以及包装件的制造方法

Also Published As

Publication number Publication date
JPS63123421U (enrdf_load_stackoverflow) 1988-08-11
DE3863362D1 (de) 1991-08-01
EP0277517A1 (en) 1988-08-10
NO880466D0 (no) 1988-02-03
FI875530A7 (fi) 1988-08-05
CA1331749C (en) 1994-08-30
ATE64721T1 (de) 1991-07-15
DK164033C (da) 1992-09-21
AU1119988A (en) 1988-08-11
NO170723C (no) 1992-11-25
AU592035B2 (en) 1989-12-21
NO170723B (no) 1992-08-17
NO880466L (no) 1988-08-05
DK164033B (da) 1992-05-04
DK54788A (da) 1988-08-05
DK54788D0 (da) 1988-02-03
FI875530A0 (fi) 1987-12-16
ES2022926B3 (es) 1991-12-16
FI89343B (fi) 1993-06-15
FI89343C (fi) 1993-09-27

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