EP1842784B1 - Sachet en film et un procédé pour sa fabrication - Google Patents

Sachet en film et un procédé pour sa fabrication Download PDF

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Publication number
EP1842784B1
EP1842784B1 EP06007113A EP06007113A EP1842784B1 EP 1842784 B1 EP1842784 B1 EP 1842784B1 EP 06007113 A EP06007113 A EP 06007113A EP 06007113 A EP06007113 A EP 06007113A EP 1842784 B1 EP1842784 B1 EP 1842784B1
Authority
EP
European Patent Office
Prior art keywords
plastic film
bag
sheet
side folds
film bag
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
EP06007113A
Other languages
German (de)
English (en)
Other versions
EP1842784A1 (fr
Inventor
Alfons Kruse
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.)
Mondi Halle GmbH
Original Assignee
Nordenia Deutschland Halle GmbH
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 Nordenia Deutschland Halle GmbH filed Critical Nordenia Deutschland Halle GmbH
Priority to EP06007113A priority Critical patent/EP1842784B1/fr
Priority to AT06007113T priority patent/ATE437810T1/de
Priority to DE502006004371T priority patent/DE502006004371D1/de
Priority to PCT/EP2007/002730 priority patent/WO2007112898A1/fr
Publication of EP1842784A1 publication Critical patent/EP1842784A1/fr
Application granted granted Critical
Publication of EP1842784B1 publication Critical patent/EP1842784B1/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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides

Definitions

  • the invention relates to a film bag which is formed by folding and sealing a film, with two front sides, two V-shaped side folds, a bottom fold and a head-side bag opening.
  • Such film bags are for example from the patents DE 1 238 650 and DE 196 12 102 C2 known.
  • the film bag has an exact cuboid shape with a flat as possible floor. If the bag deviates too much from this ideal shape, there is often a problem with the further packaging process. For example, the filled bags overturn when they are not guided. This can lead to a standstill of an automatic filling process and thus cause a reduction of the output.
  • the object of the invention is therefore to provide a foil bag according to the prior art, in which a good stability is guaranteed.
  • the object is achieved according to the invention in that in the area of the blind seam additionally a separately generated circumferential mechanical weakening is provided.
  • the inventive combination of blind seal seam and separate mechanical weakening ensures a very slight buckling of the blind seal seam to form the bottom surface. Due to the easily bendable edges of the film bag according to the invention is safe on its bottom surface and has no tendency to tip over.
  • the mechanical weakening is produced by means of a slight punching, a light cut, an embossing or a laser process.
  • the film may also have end-side punched, which come to rest through the behavior of the film in the region of the bottom surface and thereby reduce the number of bottom surfaces forming film layers partially.
  • the smaller number of film layers advantageously ensures smaller thickness jumps in the bottom area, whereby a flat bottom surface is ensured.
  • the invention further provides a process for producing a film bag according to claim 4.
  • Advantageous embodiments of this process are described in claims 5 to 8.
  • the Fig. 1 to 5 show a method for producing a film bag made of plastic, which has two front sides 1, two V-shaped side gussets 2, a bottom surface 3 and a head-side bag opening 4.
  • an endless film web 5 is first provided with a transversely extending to the web 5, over the entire width of the web 5 extending blind seam 6.
  • the film web 5 is additionally provided with a separately generated, likewise over the entire web width extending mechanical weakening 7 ( Fig. 1 ).
  • the endless film tube 5 is provided with punched-12, will be discussed in more detail later.
  • edge punching 12 first a narrow strip 16.
  • the V-shaped side folds are folded, the film web with a longitudinal sealing seam 13 to a film tube 5 'welded and the narrow strip 16 separated.
  • the longitudinal sealing seam 13 is located at a corner between a front side 1 and a side fold 2.
  • the gussets 2 are provided ( Fig. 2 ).
  • a blank 5 "for a single foil bag is produced by a separation process from the endless film tube 5.
  • the blank 5" is produced by a punching process along the parting lines 14.
  • the blank 5 " has a zipper to close the opening 4 15, which has already been welded onto the endless film web 5 (s. Fig. 1 ).
  • a slider can also be welded on.
  • the sealing seams 9, 10 are spaced from one another for closing the front sides 1 and run parallel to one another.
  • the bottom surface 3 of the film bag is formed by folding over the circumferential blind seam 6 ( Fig. 4 ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Claims (9)

  1. Sachet en film, qui est formé par le pliage et le scellement d'un film (5), comprenant deux côtés avant (1), deux plis latéraux (2) en V, une surface de fond (3) et une ouverture de sachet (4) côté supérieur, la stabilité du sachet en film debout sur la surface de fond (3) étant améliorée par une soudure scellée fausse (6) périphérique, à replier lors du dépliage de la surface de fond (3), caractérisé en ce qu' un affaiblissement (7) mécanique périphérique, généré séparément, est prévu en supplément dans la zone de la soudure scellée fausse (6).
  2. Sachet en film selon la revendication 1, caractérisé en ce que l'affaiblissement (7) mécanique a été généré au moyen d'une légère perforation, d'une légère découpe, d'un gaufrage ou d'une opération laser.
  3. Sachet en film selon la revendication 1 ou 2, caractérisé en ce que le film (5) présente des matriçages (12) côté extrémité, qui arrivent au niveau de la zone de surface de fond (3) par le pliage du film (5) et réduisent ainsi par zones le nombre des couches de film formant la surface de fond (3).
  4. Procédé pour la fabrication d'un sachet en film, qui présente deux côtés avant (1), deux plis latéraux (2) en V, une surface de fond (3) et une ouverture de sachet (4) côté supérieur,
    une bande de film (5) continue étant dotée d'une soudure scellée fausse (6) agencée transversalement à la bande et s'étendant sur toute la largeur de la bande,
    les plis latéraux (2) en V étant pliés et la bande de film (5) étant soudée avec une soudure scellée longitudinale (13) en un flexible en film (5'),
    les plis latéraux (2) étant fermés côté fond, de la même façon que les côtés avant (1) du flexible en film (5'), avec des soudures scellées (8),
    une pièce découpée (5") pour un sachet en film individuel étant générée par une opération de séparation à partir du flexible en film (5') continu,
    caractérisé en ce que la bande de film (5) est dotée dans la zone de la soudure scellée fausse (6) en supplément d'un affaiblissement (7) mécanique généré séparément et s'étendant également sur la largeur totale de la bande.
  5. Procédé selon la revendication 4, caractérisé en ce que la surface de fond (3) du sachet en film est formée ensuite par repliage de la soudure scellée fausse (6) périphérique d'une seule partie découpée (5").
  6. Procédé selon la revendication 5, caractérisé en ce que l'affaiblissement mécanique est généré au moyen d'un léger poinçonnage, d'une légère découpe, d'un gaufrage ou d'une opération laser.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que la section d'extrémité, fermée par les soudures scellées (9, 10), de la partie découpée (5") est pliée transversalement à la bande de film (5) contre la surface de fond (3) et est collée avec celle-ci.
  8. Procédé selon la revendication 7, caractérisé en ce que la bande de film (5) continue est dotée de matriçages (12) qui entraînent un évidement dans la zone des plis latéraux (2).
  9. Procédé selon l'une quelconque des revendications 5 à 8, caractérisé en ce que les soudures scellées (8, 9, 10) sont pliées pour la fermeture côté fond des plis latéraux (2) en biais par rapport au flexible en film (5).
EP06007113A 2006-04-04 2006-04-04 Sachet en film et un procédé pour sa fabrication Expired - Lifetime EP1842784B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06007113A EP1842784B1 (fr) 2006-04-04 2006-04-04 Sachet en film et un procédé pour sa fabrication
AT06007113T ATE437810T1 (de) 2006-04-04 2006-04-04 Folienbeutel und verfahren zur herstellung eines folienbeutels
DE502006004371T DE502006004371D1 (de) 2006-04-04 2006-04-04 Folienbeutel und Verfahren zur Herstellung eines Folienbeutels
PCT/EP2007/002730 WO2007112898A1 (fr) 2006-04-04 2007-03-28 sac en PLASTIQUE et procédé de production d'un sac en film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06007113A EP1842784B1 (fr) 2006-04-04 2006-04-04 Sachet en film et un procédé pour sa fabrication

Publications (2)

Publication Number Publication Date
EP1842784A1 EP1842784A1 (fr) 2007-10-10
EP1842784B1 true EP1842784B1 (fr) 2009-07-29

Family

ID=36829830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06007113A Expired - Lifetime EP1842784B1 (fr) 2006-04-04 2006-04-04 Sachet en film et un procédé pour sa fabrication

Country Status (4)

Country Link
EP (1) EP1842784B1 (fr)
AT (1) ATE437810T1 (fr)
DE (1) DE502006004371D1 (fr)
WO (1) WO2007112898A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4079655A1 (fr) * 2021-04-23 2022-10-26 Mondi AG Sac d'emballage, ainsi que procédé de fabrication

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU139471A (en) * 1970-06-11 1984-08-31 Jentsch Hans G Method of manufcturing bags from multifoil plastics
US4526565A (en) * 1983-02-23 1985-07-02 Linear Films, Inc. Method of making flat bottom plastic bag
US6319184B1 (en) * 1998-06-09 2001-11-20 Bob Dematteis Co. Apparatus and process for producing cold seal in plastic bags
FR2833928B1 (fr) * 2001-12-26 2004-02-13 Autobar Flexible France Sac d'emballage avec fonf preforme

Also Published As

Publication number Publication date
WO2007112898A1 (fr) 2007-10-11
ATE437810T1 (de) 2009-08-15
DE502006004371D1 (de) 2009-09-10
EP1842784A1 (fr) 2007-10-10

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