EP0243750A2 - Sac fabriqué en matière thermoplastique - Google Patents

Sac fabriqué en matière thermoplastique Download PDF

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Publication number
EP0243750A2
EP0243750A2 EP87105234A EP87105234A EP0243750A2 EP 0243750 A2 EP0243750 A2 EP 0243750A2 EP 87105234 A EP87105234 A EP 87105234A EP 87105234 A EP87105234 A EP 87105234A EP 0243750 A2 EP0243750 A2 EP 0243750A2
Authority
EP
European Patent Office
Prior art keywords
welds
sack
gussets
gusset
area
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
EP87105234A
Other languages
German (de)
English (en)
Other versions
EP0243750B1 (fr
EP0243750A3 (en
Inventor
Fritz Achelpohl
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to AT87105234T priority Critical patent/ATE54280T1/de
Publication of EP0243750A2 publication Critical patent/EP0243750A2/fr
Publication of EP0243750A3 publication Critical patent/EP0243750A3/de
Application granted granted Critical
Publication of EP0243750B1 publication Critical patent/EP0243750B1/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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • the invention relates to a sack made of thermoplastic plastic film, consisting of a hose section provided with inlaid side gussets, which in the area of its bottom formed by a transverse bottom weld seam and / or in the area of its opening side to be closed later by a transverse head weld seam with so-called corner welds, by the two each outer layer of the side gussets is provided, which run obliquely from the outer edges of the side gussets inwards and in the direction of the bottom and / or later head weld seams and end in the area of the inner gusset edges, and which are provided with openings for venting the filled bag is.
  • the ventilation openings are located on the inner walls of the gussets lying one above the other in a flat sack in a strip parallel to the head and bottom weld seams, which contains the gusset weld seams and the width of which projections onto the outer ones Folded edges correspond, namely on the inner parts of the parts of the walls diagonally divided by the gusseted weld seams in their central regions.
  • the ventilation openings in its filled state are covered by the outer gusset parts of the base covering them, so that they do not immediately form any external openings which perforate the sack.
  • moisture and water can easily penetrate into the pockets formed by the gusset and are open to the outside and reach the interior of the sack through the ventilation openings.
  • the object of the invention is therefore to create a sack of the type specified at the outset, the ventilation openings of which are better protected against external influences and in particular against the ingress of water or moisture into the sack.
  • this object is achieved in a sack of the generic type in that the welds forming the corner welds are designed with interruptions forming ventilation channels and that at least one wall of the gusset formed by the corner welds has perforations.
  • the sack according to the invention is, as it were, provided with ventilation channels and vent openings arranged in a labyrinthine manner, so that moisture and water cannot get into the inside of the sack at all or under extremely unfavorable circumstances.
  • the labyrinth effect is additionally improved if only the inner walls of the gusset, which lie on top of one another in the flat, unfilled sack, are provided with perforations.
  • the gussets of the flat-lying sacks are provided with at least one perforation which is passed through all four layers of the side gussets. Such continuous perforations are easier to make than perforations that only detect the inner walls of the gussets.
  • the object on which the invention is based is further achieved in that the welds forming the corner welds end at a distance from the outer edges of the flat tube and that parallel to the welds forming the corner welds and at a short distance from them from the outer edges obliquely inward welds are provided to form labyrinth seals.
  • a sack chain 1 made of flat gusseted bags which are formed from a tubular web provided with gussets 2.
  • the tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.
  • the seams 5 forming the corner welds are not continuous, but rather have interruptions 6 which form ventilation channels through which air present in a filled sack can escape into the gusset 7. So that the air can also escape from the gussets 7, the inner layers 8 lying one on top of the other in the gusset region are provided with punched-outs 9, as shown in FIG. 2. In such an embodiment, the air consequently escapes through the channels 6 in the gusset weld seams 5 into the gusset 7 and from there via the punched-outs 9 to the outside. In this way, a labyrinth-like seal is achieved despite good ventilation.
  • the punched-out portions 9 have to be made by means of an internal tool. Although this configuration provides a better seal, it is more complex.
  • the described labyrinthine vents can be provided both in the bottom and head area and only in the head area.
  • An embodiment is also possible in which ventilation is provided only on one side of the sack in the head region.
  • FIG. 4 shows a sack chain 1 'made of flat gusseted sacks which are formed from a tubular web provided with gussets 2.
  • the sack chain 1 of FIG. 4 essentially corresponds to that of FIG. 1.
  • the tubular web provided with gussets 2 is provided with bottom seams 3, perforation lines 4 and corner welds at regular intervals to produce the individual gusseted bags.
  • weld seams 5 'forming the corner welds end at a distance from the outer edges 11 of the flat tube 1'.
  • weld seams 14 run parallel to the corner weld seams 5 'and at a short distance from them from the outer edges 11.
  • These weld seams 14 can have different lengths, as can be seen from FIG. 4.
  • the vent holes 9 ' correspond to the holes shown in FIGS. 1 to 3.
EP19870105234 1986-04-23 1987-04-08 Sac fabriqué en matière thermoplastique Expired - Lifetime EP0243750B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105234T ATE54280T1 (de) 1986-04-23 1987-04-08 Sack aus thermoplastischer kunststofffolie.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3613783 1986-04-23
DE3613783 1986-04-23
DE3705891 1987-02-24
DE19873705891 DE3705891A1 (de) 1986-04-23 1987-02-24 Seitenfaltensack aus thermoplastischer kunststoffolie mit entlueftungsoeffnungen

Publications (3)

Publication Number Publication Date
EP0243750A2 true EP0243750A2 (fr) 1987-11-04
EP0243750A3 EP0243750A3 (en) 1988-10-05
EP0243750B1 EP0243750B1 (fr) 1990-07-04

Family

ID=25843160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870105234 Expired - Lifetime EP0243750B1 (fr) 1986-04-23 1987-04-08 Sac fabriqué en matière thermoplastique

Country Status (2)

Country Link
EP (1) EP0243750B1 (fr)
DE (1) DE3705891A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026605A1 (fr) * 1993-05-06 1994-11-24 Jamison Mark D Valve a gaz sensible a la pression pour sac d'emballage souple
US5873221A (en) * 1996-04-03 1999-02-23 Sealed Air Corporation (U.S.) Foam in bag packaging system
US5996782A (en) * 1997-04-14 1999-12-07 Sealed Air Corporation Foam in bag packaging system for manual use
US6272813B1 (en) 1996-04-03 2001-08-14 Sealed Air Corporation Foam in bag packaging system
EP1277665A1 (fr) * 2001-07-19 2003-01-22 Emupack Co., Ltd. Sac pourvu de moyens d'aération ainsi que son procédé de fabrication
US6629599B2 (en) 1996-04-03 2003-10-07 Sealed Air Corporation Foam in bag packaging system
EP1535851A1 (fr) * 2002-09-04 2005-06-01 Ishizaki Shizai Co., Ltd: Sac a compression ayant une fonction de clapet de non retour
EP1820745A1 (fr) * 2006-02-17 2007-08-22 Mondi Packaging AG Emballage flexible avec soupape de ventilation
EP1886929A1 (fr) 2006-08-10 2008-02-13 Haver & Boecker oHG Sac à plis latéraux ouvert en matériau pouvant être soudé
EP1720777B1 (fr) * 2003-11-12 2012-05-30 Windmöller & Hölscher KG Sac perfore realise selon le procede simultane formage/remplissage/scellage
EP2845820A1 (fr) * 2013-09-04 2015-03-11 Mondi Halle GmbH Sachet à soufflet latéral en tissu composite en matière plastique
WO2018177859A1 (fr) 2017-03-27 2018-10-04 Construction Research & Technology Gmbh Sac pour substances liquides et poudreuses à section de surface soluble, procédé et utilisation associée et utilisation d'une section de surface soluble

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720020C1 (de) * 1997-05-13 1998-10-01 Korsnaes Wilhelmstal Gmbh Papi Papiersack oder Papierbeutel mit zwei Lagen
DE102007062814A1 (de) 2007-12-21 2009-06-25 Nordenia Deutschland Halle Gmbh Verpackung
DE202008007645U1 (de) 2008-06-07 2008-09-04 Nordenia Deutschland Halle Gmbh Verpackung aus einer Kunststofffolie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237844A (en) * 1963-10-07 1966-03-01 Ici Ltd Bag closure
AT330066B (de) * 1973-07-09 1976-06-10 Bosch Gmbh Robert Bodenfaltenbeutel
FR2512424A1 (fr) * 1981-09-10 1983-03-11 Collet Cafes Sachet d'emballage sous vide
EP0092885A1 (fr) * 1982-04-22 1983-11-02 Wavin B.V. Sac en matière plastique avec des côtés à soufflets et des perforations

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1868662U (de) * 1963-01-11 1963-03-07 Osthushenrich Kg Kunststoffsack mit entlueftungsvorrichtung.
BE689438A (fr) * 1965-11-09 1967-04-14

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237844A (en) * 1963-10-07 1966-03-01 Ici Ltd Bag closure
AT330066B (de) * 1973-07-09 1976-06-10 Bosch Gmbh Robert Bodenfaltenbeutel
FR2512424A1 (fr) * 1981-09-10 1983-03-11 Collet Cafes Sachet d'emballage sous vide
EP0092885A1 (fr) * 1982-04-22 1983-11-02 Wavin B.V. Sac en matière plastique avec des côtés à soufflets et des perforations

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026605A1 (fr) * 1993-05-06 1994-11-24 Jamison Mark D Valve a gaz sensible a la pression pour sac d'emballage souple
US6629599B2 (en) 1996-04-03 2003-10-07 Sealed Air Corporation Foam in bag packaging system
US5873221A (en) * 1996-04-03 1999-02-23 Sealed Air Corporation (U.S.) Foam in bag packaging system
US5913603A (en) * 1996-04-03 1999-06-22 Sealed Air Corporation (U.S.) Mixing device for foam-in-bag packaging system
US6272813B1 (en) 1996-04-03 2001-08-14 Sealed Air Corporation Foam in bag packaging system
US5996782A (en) * 1997-04-14 1999-12-07 Sealed Air Corporation Foam in bag packaging system for manual use
EP1277665A1 (fr) * 2001-07-19 2003-01-22 Emupack Co., Ltd. Sac pourvu de moyens d'aération ainsi que son procédé de fabrication
US6851856B2 (en) 2001-07-19 2005-02-08 Emupack Co., Ltd. Bag having degas structure and method for producing the same
EP1535851A1 (fr) * 2002-09-04 2005-06-01 Ishizaki Shizai Co., Ltd: Sac a compression ayant une fonction de clapet de non retour
EP1535851A4 (fr) * 2002-09-04 2009-04-29 Ishizaki Shizai Kk Sac a compression ayant une fonction de clapet de non retour
EP1720777B1 (fr) * 2003-11-12 2012-05-30 Windmöller & Hölscher KG Sac perfore realise selon le procede simultane formage/remplissage/scellage
EP1820745A1 (fr) * 2006-02-17 2007-08-22 Mondi Packaging AG Emballage flexible avec soupape de ventilation
EP1886929A1 (fr) 2006-08-10 2008-02-13 Haver & Boecker oHG Sac à plis latéraux ouvert en matériau pouvant être soudé
EP2845820A1 (fr) * 2013-09-04 2015-03-11 Mondi Halle GmbH Sachet à soufflet latéral en tissu composite en matière plastique
WO2018177859A1 (fr) 2017-03-27 2018-10-04 Construction Research & Technology Gmbh Sac pour substances liquides et poudreuses à section de surface soluble, procédé et utilisation associée et utilisation d'une section de surface soluble

Also Published As

Publication number Publication date
EP0243750B1 (fr) 1990-07-04
EP0243750A3 (en) 1988-10-05
DE3705891A1 (de) 1987-10-29

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