EP0121041A2 - Sac à plis latéraux avec sac extérieur de consolidation et sac intérieur ainsi que procédé pour sa fabrication - Google Patents

Sac à plis latéraux avec sac extérieur de consolidation et sac intérieur ainsi que procédé pour sa fabrication Download PDF

Info

Publication number
EP0121041A2
EP0121041A2 EP84100594A EP84100594A EP0121041A2 EP 0121041 A2 EP0121041 A2 EP 0121041A2 EP 84100594 A EP84100594 A EP 84100594A EP 84100594 A EP84100594 A EP 84100594A EP 0121041 A2 EP0121041 A2 EP 0121041A2
Authority
EP
European Patent Office
Prior art keywords
bag
seam
perforation
folds
web
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
EP84100594A
Other languages
German (de)
English (en)
Other versions
EP0121041A3 (en
EP0121041B1 (fr
Inventor
Karl Pausch
Friedrich Dr. Kratzert
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.)
NIEDERMAYR PAPIERWARENFABRIK AG
Original Assignee
NIEDERMAYR PAPIERWARENFABRIK AG
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 NIEDERMAYR PAPIERWARENFABRIK AG filed Critical NIEDERMAYR PAPIERWARENFABRIK AG
Priority to AT84100594T priority Critical patent/ATE26670T1/de
Publication of EP0121041A2 publication Critical patent/EP0121041A2/fr
Publication of EP0121041A3 publication Critical patent/EP0121041A3/de
Application granted granted Critical
Publication of EP0121041B1 publication Critical patent/EP0121041B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
    • B31B70/266—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement involving gusset-forming
    • 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
    • B31B2155/00—Flexible containers made from webs
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • B31B2170/204—Construction of flexible containers having multi-layered walls, e.g. laminated or lined involving folding a web about an already tubular web

Definitions

  • the invention relates to a gusseted bag according to the preamble of patent claim 1 and a method for its production according to the preamble of patent claim 3.
  • the bottom is closed in that the lower end of the tube section forming the outer bag with the staggered closure flap is folded over a bottom fold, which also includes the inner bag above the cross-seam, and glued to the adjacent bag wall.
  • the cross-weld seam of the inner sack which is included in the bottom seam of the outer sack, prevents good soil formation, and additionally, in the cross-weld seam forming the bottom seam of the inner sack, leaks can occur in the area four layers of the gussets and only two layers in the middle area are welded together. Finally, undesirable stress peaks can also occur in the area of the side fold of the inner bag welded to the outer layers.
  • a gusseted bag according to the preamble of claim 1 and a method for its production according to the preamble of claim 3 is known from US-PS 39 29 275.
  • this known gusseted sack when filling the inner sack, it can nestle well and stress-free on the block bottom formed in the outer sack, because the bottom region of the inner sack is not connected to the bottom of the outer sack and can therefore move and spread without constraints.
  • the object of the invention is therefore to provide a gusseted bag according to the preamble of the claim, which can be produced in a simple manner.
  • the inner sack between the separating cuts or easily destructible perforation lines can be provided with a perforation line which can be torn when the inner sack is removed from the outer sack for the purpose of emptying it, as is the case with a flat sack, but without the problems of tension-free bottom formation consist, is known from DE-OS 24 61 828.
  • the gusseted sack according to the invention can be produced in a particularly simple manner, since it is not necessary to take special measures to prevent the bottom weld seam of the inner sack from being included in the bottom formation of the outer sack.
  • an inner tube web 1 is applied to the still open material web 2 forming the outer sack in such a way that the edges 6 of the inner tube web 1 provided with folded-in edge areas coincide with the later outer folded edges of the material web 2.
  • the outer edge regions of the inner tube web 1 can already be folded over by 180 ° onto the upper or lower side of the film tube 1 when it is placed on the web 2, as can be seen from FIGS. 2 and 3.
  • the inner tube sheet 1 can, however, also be laid flat and provided with bottom weld seams 3 and inserted into the tube forming device and folded there together with the material sheet forming the outer bag. In this case, the arrangement shown in FIG. 2 results.
  • the folded-in side areas of the inner tube sheet 1 are provided with incisions 5. These lateral incisions 5 can be made symmetrically to the later folding edge 6 in the inner tube sheet 1 which is still lying flat.
  • perforation lines 7 are provided parallel to the incisions in the manner shown in FIG. 5.
  • the incisions 5 can be connected to one another by a perforation line 10 in the manner shown in FIG. 5.
  • the perforation line is then torn when the inner bag is removed.
  • the leading hose section is already accelerated when the web section at the level of the incisions 5 is just before the line of contact of the rollers. If the direction of the web is reversed, this applies accordingly.
  • the perforation line 10 must have already passed the line of contact of the pair of rollers 9 when the tear occurs.

Landscapes

  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
EP84100594A 1983-01-27 1984-01-20 Sac à plis latéraux avec sac extérieur de consolidation et sac intérieur ainsi que procédé pour sa fabrication Expired EP0121041B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84100594T ATE26670T1 (de) 1983-01-27 1984-01-20 Seitenfaltensack mit tragendem aussensack und innensack sowie verfahren zu seiner herstellung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3302749 1983-01-27
DE3302749 1983-01-27
DE3304657 1983-02-10
DE3304657A DE3304657C1 (de) 1983-01-27 1983-02-10 Seitenfaltensack mit tragendem Aussensack und Innensack sowie Verfahren zu seiner Herstellung

Publications (3)

Publication Number Publication Date
EP0121041A2 true EP0121041A2 (fr) 1984-10-10
EP0121041A3 EP0121041A3 (en) 1985-04-17
EP0121041B1 EP0121041B1 (fr) 1987-04-22

Family

ID=25807853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100594A Expired EP0121041B1 (fr) 1983-01-27 1984-01-20 Sac à plis latéraux avec sac extérieur de consolidation et sac intérieur ainsi que procédé pour sa fabrication

Country Status (2)

Country Link
EP (1) EP0121041B1 (fr)
DE (1) DE3304657C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228467A (en) * 1989-02-24 1990-08-29 Wang Chung Han Bag assembly
FR2774668A1 (fr) * 1998-02-06 1999-08-13 Windmoeller & Hoelscher Procede d'alignement de deux bandes reunies en une bande multicouche et dispositif pour la mise en oeuvre du procede
EP3708511A1 (fr) * 2019-03-13 2020-09-16 Coveris Flexibles France Sac d'emballage a recyclage facilite, et procede de fabrication d'un tel sac
EP3792192A1 (fr) * 2019-09-16 2021-03-17 Mondi AG Agencement de sacs d'emballage ainsi que procédé de fabrication et de manipulation de l'agencement de sacs d'emballage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635809A1 (de) * 1986-10-22 1988-05-05 Wilhelmstal Werke Gmbh Kreuzboden-kombinationssack und verfahren zu dessen herstellung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929275A (en) * 1972-07-07 1975-12-30 Union Camp Corp Bags with film liners and method of making
DE2461828A1 (de) * 1974-12-30 1976-07-08 Windmoeller & Hoelscher Einseitig offener mehrlagensack
DE2643508A1 (de) * 1976-09-28 1978-03-30 Gartemann & Hollmann Gmbh Mehrlagiger sack

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228467A (en) * 1989-02-24 1990-08-29 Wang Chung Han Bag assembly
GB2228467B (en) * 1989-02-24 1993-05-26 Wang Chung Han Disposable plastic bag assembly
FR2774668A1 (fr) * 1998-02-06 1999-08-13 Windmoeller & Hoelscher Procede d'alignement de deux bandes reunies en une bande multicouche et dispositif pour la mise en oeuvre du procede
EP3708511A1 (fr) * 2019-03-13 2020-09-16 Coveris Flexibles France Sac d'emballage a recyclage facilite, et procede de fabrication d'un tel sac
FR3093706A1 (fr) * 2019-03-13 2020-09-18 Coveris Flexibles France Sac d’emballage à recyclage facilité, et procédé de fabrication d’un tel sac
EP3792192A1 (fr) * 2019-09-16 2021-03-17 Mondi AG Agencement de sacs d'emballage ainsi que procédé de fabrication et de manipulation de l'agencement de sacs d'emballage

Also Published As

Publication number Publication date
EP0121041A3 (en) 1985-04-17
DE3304657C1 (de) 1984-09-06
EP0121041B1 (fr) 1987-04-22

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