EP0303582A1 - Boîte pliante - Google Patents

Boîte pliante Download PDF

Info

Publication number
EP0303582A1
EP0303582A1 EP88850243A EP88850243A EP0303582A1 EP 0303582 A1 EP0303582 A1 EP 0303582A1 EP 88850243 A EP88850243 A EP 88850243A EP 88850243 A EP88850243 A EP 88850243A EP 0303582 A1 EP0303582 A1 EP 0303582A1
Authority
EP
European Patent Office
Prior art keywords
folding box
panels
package
end closure
creasing
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.)
Granted
Application number
EP88850243A
Other languages
German (de)
English (en)
Other versions
EP0303582B1 (fr
Inventor
Göran Ström
Frans Johansson
Bengt Björklund
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.)
A&R Carton AB
Original Assignee
Akerlund and Rausing 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 Akerlund and Rausing AB filed Critical Akerlund and Rausing AB
Priority to AT88850243T priority Critical patent/ATE68764T1/de
Publication of EP0303582A1 publication Critical patent/EP0303582A1/fr
Application granted granted Critical
Publication of EP0303582B1 publication Critical patent/EP0303582B1/fr
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
    • B65D5/56—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
    • 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
    • B65D5/0272—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 closures formed by applying a web on the edge of the body, and subsequent inward folding of flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4279—Joints, seams, leakproof joints or corners, special connections between panels

Definitions

  • the present invention relates to a folding box of cardboard or similar material and more precisely a folding box of the type where a so called membrane is used for sealing and closing at least one end of the folding box.
  • the object of the present invention is to develop the said corner structre further, so that with a minimum of modifications of existing production equipment and packing lines, respectively, it will be possible to accomplish even better sealing condition at the corners of the folding box, at one or both ends thereof.
  • Especially the object is to provide better sealing possibilities when using a membrane of the type mentioned at the introduction.
  • the present invention provides a package, comprising a sleeve of card board or similar material formed of side wall panels and closure panels integral with the sleeve at each end thereof for forming a package of the folding box type, where in the longitu­dinal direction of the folding box, first creasing lines define a polygonal cross section of the folding box and second lines perpendicular to said first creasing lines define a transition regional between the sleeve and a respective one of the end closures.
  • each pair of adjacent end closure panels in a region directly in register with one or said first folding denotation and at a predetermined distance from a straight line interconnecting adjacent second increasing lines is provided with a continuous panel outer edge defining line which joins said panels.
  • a pair of said second creasing lines and the respective one of said first creasing lines belonging thereto start out from substantially one and the same point, which defines one corner at either folding box end.
  • At least the internal side of the folding box is coated by a thermoplastics material, and a sealing membrane is sealed to the folding box by being attached to the plastics coating in the region between said panel outer boundery line and the corner belonging thereto at both ends of the folding box, and by being attached in a manner known per se to at least portions of the end closure panels.
  • the continuous panel outer boundery lines are placed such that when folding means outwards together with the end closure panels, there will be created a substantially uniform tensioning of the plastics coating in the region between a panel outer boundery line and the corner belonging thereto, meaning that the sealing area available at the corner will increase.
  • the minimum distance between a panel outer boundery line and the corner belonging thereto falls within the interval of approxima­tively 1,5-4 mm.
  • the reference numeral 10 in Fig. 1 denotes a side wall of a folding box blank of card board or similar material.
  • the blank is coated by thermaplastics material at least at the side thereof which is to form the inside of the folding box.
  • the numeral 11 denotes a portion of an adjacent side wall or side wall panel. Said panels are separated from each other by a creasing line 12 or a corresponding folding denotation. This folding denotation starts from a point 13, from which also a second set of creasing lines 15, 15a start out.
  • Such creasing lines 15, 15a define the boundary line between the side wall panels 10, 11 and the end closure penals 16, 17.
  • a punched out region 18 between the panels 16, 17.
  • the punch line 19 continuous with a portion 19a below the lowest point of the punch line 20.
  • a not broken-through material bridge 21 which when folding out flaps as will be explained later on, forms said "fiber wads" when the tension in the bridge portion 21 exceeds the tension strength or elongation strength.
  • Fig. 2 there is shown another type of known corner structure.
  • the numerals 22, 23 denote adjacent side wall panels, the nume­rals 24, 25 and 25a denote creasing lines or corresponding folding denotations.
  • the numeral 26 denotes a punch line, which separates the end closure flaps 27 and 28.
  • a not broken-through material portion 29 the purpose of which is to form the said fiber wad.
  • Fig. 3 which represents a known structure, (US 3 040 958)
  • double creasing lines 29, 30 between adjacent side wall panels 31, 32.
  • a creasing denotation 33, 33a separates the side walls panels 31, 32 from adjacent end closures 34, 35 and a punch line 36 separates the end closures 34, 35.
  • a not brokenthrough material portion 37 between the lowest point of the punch line and the level defined by a line 33, 33a.
  • Fig. 5 there is shown a further embodiment according to US patent number 3 040 958 where side wall panels 38, 39 are separa­ted by double creasing lines 40, 41.
  • the creasing lines 40, 42 define the transition line between the end closure flaps 43, 44 and the side walls 38, 39.
  • a punch line 45 extends down to a point 46, where short creasing lines 47, 48 connect said point to the end points of the double creasing lines 40, 41.
  • Fig. 5 there is shown a first embodiment of the corner struc­ture according to the invention.
  • Parts of the side wall panels 49, 50 are separated from each other by a creasing line 51, which is terminated upwards in a point 52, which falls on a straight line or even finds the border point between two further creasing lines 53, 53a forming part of the second set of the creasing lines for defining the transition between side walls and end closure panels.
  • FIG. 5 adjacent end closure panels have been denoted 44, 45. In the actual case a relatively wide punched out region 56 is formed between the panels.
  • the region 57 of the end closure and panel outer boundery line cut out 56 defines a continuous section into said region 57. This means that the strain, elongation of the plastics coating, at the end closure panels in the region between the point 52 and the section 57 of the outer boundery line, is distributed uniformly, so that the plastics coating or plastics layer actually will be expanded or enlarged when the end closure penals 54, 55 are folded out to a horizontal position when sealing a membrane.
  • the tensioning obtained will be distributed uniformly because the deformation takes place along a continuous line 57 instead of taking place abruptly as in Fig. 1, 2 and 3, where frequently the plastics coating is torn up along a tear up line meaning insuf­ficient sealing along the line and the formation of penetration or leaking channels.
  • the force when folding out the end closure panels 54, 55 is transferred uniformly to the plastics layer in the region between the section 57 and the point 52, meaning that an unbroken sealing area comprising heat sealable thermoplastics is obtained and which area will also be the subject of an enlar­ging effect due to the folding out and the tensioning following thereafter, however, without any rupture of the plastics coa­tings.
  • FIG. 6 shows adjacent folding box side wall panels separated by a creasing line 61 which in a point 63 joins an integral creasing line 63, 63a, forming part of a second set of creasing lines.
  • the end closure 64 and 65 are here separated by a somewhat narrower punched out region 66 which, however at the our part thereof is terminated by a continuous section 67 corresponding to the section 57 in Fig. 5.
  • the so called end closure panel outer boundery line has been identified by the numeral 68.
  • a folding box 69 manufactured from the blank in Fig. 5.
  • the folding boxes is filled and closed at the top by a sealing membrane 70 of for instance polyethylene coated thin paper.
  • the membrane is sealed against portions of the end closure wall panels according to the invention, in the specific corner regions formed between continuous punched out sections 57 and adjacent crossing points 52 of crease lines 51 and 53, 53a respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)
EP88850243A 1987-07-13 1988-07-07 Boîte pliante Expired - Lifetime EP0303582B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88850243T ATE68764T1 (de) 1987-07-13 1988-07-07 Faltschachtel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702849 1987-07-13
SE8702849A SE468941B (sv) 1987-07-13 1987-07-13 Aendfoerslutning foer foerpackningskapsel av kartong eller liknande material

Publications (2)

Publication Number Publication Date
EP0303582A1 true EP0303582A1 (fr) 1989-02-15
EP0303582B1 EP0303582B1 (fr) 1991-10-23

Family

ID=20369117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88850243A Expired - Lifetime EP0303582B1 (fr) 1987-07-13 1988-07-07 Boîte pliante

Country Status (5)

Country Link
EP (1) EP0303582B1 (fr)
AT (1) ATE68764T1 (fr)
DE (1) DE3865773D1 (fr)
ES (1) ES2026696T3 (fr)
SE (1) SE468941B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133278A1 (fr) * 2008-06-12 2009-12-16 G.D. S.p.A Paquet fermé hermétiquement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH327604A (de) * 1954-06-16 1958-01-31 Akerlund & Rausing Ab Verpackung mit einem längs Knifflinien gefalteten Kartonstück
US3040958A (en) * 1957-10-07 1962-06-26 Roy S Sanford & Company Carton
EP0199697A2 (fr) * 1985-04-24 1986-10-29 WINTERLING, Stig Emballage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH327604A (de) * 1954-06-16 1958-01-31 Akerlund & Rausing Ab Verpackung mit einem längs Knifflinien gefalteten Kartonstück
US3040958A (en) * 1957-10-07 1962-06-26 Roy S Sanford & Company Carton
EP0199697A2 (fr) * 1985-04-24 1986-10-29 WINTERLING, Stig Emballage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2133278A1 (fr) * 2008-06-12 2009-12-16 G.D. S.p.A Paquet fermé hermétiquement
JP2009298482A (ja) * 2008-06-12 2009-12-24 G D Spa 密封パケット

Also Published As

Publication number Publication date
SE468941B (sv) 1993-04-19
ES2026696T3 (es) 1992-05-01
ATE68764T1 (de) 1991-11-15
SE8702849L (sv) 1989-01-14
SE8702849D0 (sv) 1987-07-13
DE3865773D1 (de) 1991-11-28
EP0303582B1 (fr) 1991-10-23

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