EP0722408B1 - Sachet, notamment de conditionnement de substances sensibles a l'humidite - Google Patents

Sachet, notamment de conditionnement de substances sensibles a l'humidite Download PDF

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Publication number
EP0722408B1
EP0722408B1 EP94929478A EP94929478A EP0722408B1 EP 0722408 B1 EP0722408 B1 EP 0722408B1 EP 94929478 A EP94929478 A EP 94929478A EP 94929478 A EP94929478 A EP 94929478A EP 0722408 B1 EP0722408 B1 EP 0722408B1
Authority
EP
European Patent Office
Prior art keywords
block
bag
adhesively bonded
bag according
block bottom
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
EP94929478A
Other languages
German (de)
English (en)
Other versions
EP0722408A1 (fr
Inventor
Reinhold Baar-Bartelt
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.)
NORD-WEST VERPACKUNG GMBH
Original Assignee
NORD-WEST VERPACKUNG 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 NORD-WEST VERPACKUNG GmbH filed Critical NORD-WEST VERPACKUNG GmbH
Publication of EP0722408A1 publication Critical patent/EP0722408A1/fr
Application granted granted Critical
Publication of EP0722408B1 publication Critical patent/EP0722408B1/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
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • 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

Definitions

  • the invention relates to a block-bottom bag made of plastic film, especially for packaging sensitive to moisture Fabrics with a front wall, a rear wall and with side walls, the longitudinal outer edges with the front wall and the rear wall form, the block bottom by folding over parts of the front wall, the back wall and the side walls along the least four transverse outer edges is formed on one end face.
  • Bags used for packaging moisture sensitive Fabrics such as Building materials or washing powder generally consist of thick paper or cardboard to to ensure their dimensional stability and their stackability. Around The bags are designed to prevent moisture ingress provided with a waterproof or vapor-tight coating that consist of a plastic coating or a layer of lacquer can and the suitably connected to the paper bag is.
  • Packaging made of such composite materials is not only expensive to manufacture, but they are also difficult environmentally friendly to dispose of, because before suitable recycling different materials of the bag are separated have to.
  • Block bottom bags are manufactured with the help of Block bottom bag machines generally in such a way that First from a flat material such as paper, e.g. as a gusseted tube trained hose is manufactured from which individual tube sections are separated, the bottom side Then ends to form the block bottom as corner inserts and Bottom side envelopes are folded inwards and connected (US-A 4 056 045). It is known to one on the block floor separate bottom cut that is made up of a rectangular sheet Paper, cardboard or plastic is to be glued to one to achieve firm and tight bottom closure of the bag (DE-A 41 02 548; DE-A 19 39 591).
  • block bottom bags the block bottom to perform multilayer to improve the tightness, wherein in an internal ledger is worked into the block base, which Corner folds and the bottom side envelopes of the gusseted tube is connected by gluing (DE-U 87 06 305).
  • Block-bottom bags consist of a multilayer Paper and film material, i.e. a composite material such as laminated paper or polypropylene-coated paper (EP-A-0 298 252).
  • a composite material such as laminated paper or polypropylene-coated paper (EP-A-0 298 252).
  • US-A-4 856 656 is also usable for bags Multi-layer film with a total of three layers known from Low pressure polyethylene (LDPE) and high pressure polyethylene (HDPE) can exist.
  • US-A-5 344 714 discloses a multilayer film with a layer of linear low pressure polyethylene (LDPE) and another layer of high pressure polyethylene (HDPE), which can also be extruded directly as a hose.
  • US-A 5 401 546 is a bag-like container for Storage and disposal of grease and oil known that from several sections of a composite film made of low-pressure polyethylene, linear low pressure polyethylene, high pressure polyethylene and polyester is used to form the tubular Container are welded together.
  • the object of the invention is a block bottom bag of the beginning to create the type mentioned that is both moisture-repellent and is easily recyclable as well as high dimensional stability and has shape accuracy and the simple and inexpensive by machine can be made and folded.
  • the bag completely made of a liquid and vapor tight, one High density polyethylene film layer (HDPE) and a polyethylene film layer low density (LDPE) plastic composite film there is a thickness of at least 50 microns and has a maximum of 300 microns, the bag on its longitudinal seam is glued.
  • the one with the block bottom provided plastic bags, as known per se, as gusseted bags educated.
  • Block bottom bags have the block bottom bag formed in the aforementioned manner good moisture-repellent properties with high strength, so that sensitive goods in it reliably against access by Moisture can be packed.
  • Block bottom bags also enable a tight bottom seal.
  • the bag as a whole consists of only one Material, namely polyethylene material, it can be Send for recycling directly after use.
  • High density polyethylene (HDPE) and low density polyethylene (LDPE) are both classed as polyolefins and are in their chemical composition so similar that a common one Recycling is easily possible.
  • the block bottom is preferably covered with a plastic film cover provided that the dimensions of the block floor about corresponds and is glued onto the block floor from the outside. This gives the block-bottom bag additional rigidity and has a homogeneous surface on its bottom side, that can be easily printed.
  • the bottom of the block-bottom bag glued with two parallel adhesive beads is at least one length equal to the width of one Long side corresponds, and if the cover is made of plastic film is fully glued to the floor. This allows the tabs of the block bottom glued together with a little adhesive will. Through the full-surface gluing of the cover with the A particularly good seal is guaranteed on the floor.
  • the adhesive is preferably a hot melt adhesive, which is particularly is easy to process, high stability of the Guaranteed adhesive seams and, thanks to its large volume, the seams, seals particularly well in the floor area.
  • 10 denotes a block bottom bag, for packaging moisture-sensitive bulk goods, such as plaster, washing powder or the like. serves and completely from one liquid and vapor-tight plastic composite film 11 is made.
  • This plastic composite film 11 has a polyethylene film layer high density (HDPE film) and one with it standing layer of low density polyethylene (LDPE) on.
  • the thickness d of the plastic composite film 11 is at least 50 ⁇ m and at most 300 ⁇ m. In the illustrated In the exemplary embodiment, the plastic composite film 11 has a thickness of 100 ⁇ m.
  • the block bottom bag 10 shown becomes like a paper bag manufactured on a block bottom bag machine. It has four parallel ones Longitudinal outer edges 12, 13, 14 and 15, on which the long sides 16, 17, 18 and 19 collide. On the longitudinal outer edge 15 the narrow long side 19 has a protruding strip 20, glued to the free outer edge of the front long side 16 is, so that there is an approximately rectangular tube, like this in block-bottom bags is known per se.
  • each of the narrow longitudinal sides 17 and 19 parallel to the longitudinal outer edges 12 and 13 or 14 and 15 inner fold 21 or 22, which divides the narrow long sides into two halves lie on top of each other when using the bag for packaging its front and rear long sides 16 and 18 laid flat on top of each other becomes.
  • the block bottom bag shown is accordingly also designed as a gusseted bag.
  • the narrow long sides are 17 and 19 and the wide, front and rear long sides 16 and 18 folded in pairs at the bottom 23 of the bag and bent inwards at right angles, so that the in Fig. 2 Folded lines, as shown is common with block-bottom bags.
  • the overlapping one another Parts 24, 25, 26 and 27 which form the bottom 28 of the bag 10 are preferably with two parallel adhesive beads 30, 31 glued, the near the lower edges 32, 33 of the narrow Long sides 17, 19 run parallel to these and up to the pointed bottom flaps formed by the wide long sides 16, 18 34, 35 are sufficient (Fig. 3).
  • the bottom 28 of the bag is with provided a cover 29 made of plastic film, the floor dimensions corresponds approximately and glued to the bottom 28 from below is.
  • the cover 29 creates a smooth surface, which are fully printed and also with a handle or the like. can be provided.
  • the filled bag can be glued at the top, but also welded or sewn. He is hereby universally applicable and can be used on all usual Filling systems for pourable or pourable packaging goods be used.
  • the invention is not restricted to the described embodiment, but can also be used for gusseted bags be, the front and back wall including the folded Side walls are closed together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Revetment (AREA)

Claims (7)

  1. Sac à fond formant bloc en feuille synthétique, en particulier pour emballer des matières sensibles à l'humidité, comportant une paroi avant, une paroi arrière et des parois latérales qui forment, avec la paroi avant et la paroi arrière, des arêtes extérieures longitudinales, le fond formant bloc étant constitué par pliage de parties de la paroi avant, de la paroi arrière et des parois latérales, le long des arêtes extérieures longitudinales, au nombre minimum de quatre, sur une face frontale, caractérisé en ce que le sac (10) est entièrement constitué dans une feuille en matière synthétique composite (11), étanche aux liquides et à la vapeur, comportant une couche de polyéthylène haute densité (HDPE) et une couche de polyéthylène basse densité (LDPE), qui présente une épaisseur (d) d'au moins 50 µm et de tout au plus 300 µm, le sac étant collé sur sa couture longitudinale.
  2. Sac à fond formant bloc selon la revendication 1, caractérisé en ce qu'il est un sac à plis latéraux.
  3. Sac à fond formant bloc selon la revendication 1 ou 2, caractérisé en ce que les parties (24, 25, 26, 27) du fond formant bloc qui se recouvrent sont collées les unes avec les autres dans la zone du fond.
  4. Sac à fond formant bloc selon l'une des revendications 1 à 3, caractérisé en ce que le fond formant bloc (28) est pourvu d'un revêtement (29) en feuille synthétique qui correspond approximativement aux dimensions du fond formant bloc (28) et est collé, par l'extérieur, sur le fond formant bloc (28).
  5. Sac à fond formant bloc selon la revendication 4, caractérisé en ce que les parties (24, 25, 26, 27) du fond formant bloc (28) qui se recouvrent sont collées avec deux cordons de colle (30, 31) parallèles l'un à l'autre, présentant au moins une longueur correspondante à la largeur d'un bord longitudinal (19), et en ce que le revêtement (29) est collé avec le fond formant bloc (28) sur toute sa surface.
  6. Sac à fond formant bloc selon l'une des revendications 1 à 5, caractérisé en ce que les parties (24, 25, 26, 27) du fond formant bloc (28) qui se recouvrent sont collées les unes aux autres sur toute leur surface.
  7. Sac à fond formant bloc selon l'une des revendications 1 à 6, caractérisé en ce que la colle est une colle thermofusible.
EP94929478A 1993-10-16 1994-10-14 Sachet, notamment de conditionnement de substances sensibles a l'humidite Expired - Lifetime EP0722408B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9315795U DE9315795U1 (de) 1993-10-16 1993-10-16 Beutel, insbesondere zum Verpacken feuchtigkeitsempfindlicher Stoffe
DE9315795U 1993-10-16
PCT/DE1994/001225 WO1995011169A1 (fr) 1993-10-16 1994-10-14 Sachet, notamment de conditionnement de substances sensibles a l'humidite

Publications (2)

Publication Number Publication Date
EP0722408A1 EP0722408A1 (fr) 1996-07-24
EP0722408B1 true EP0722408B1 (fr) 1998-09-02

Family

ID=6899503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94929478A Expired - Lifetime EP0722408B1 (fr) 1993-10-16 1994-10-14 Sachet, notamment de conditionnement de substances sensibles a l'humidite

Country Status (6)

Country Link
US (1) US5755514A (fr)
EP (1) EP0722408B1 (fr)
AT (1) ATE170485T1 (fr)
DE (2) DE9315795U1 (fr)
DK (1) DK0722408T3 (fr)
WO (1) WO1995011169A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015103824B4 (de) 2015-03-16 2018-09-13 Wernfried Voelker Papierbeutel und dazu gehöriges Herstellungsverfahren

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6125578A (en) 1994-05-03 2000-10-03 Southpac Trust International, Inc. Floral sleeve having expandable sidewalls
US6401388B2 (en) 1999-07-23 2002-06-11 Southpac Trust Int'l. Inc. Method of containing a pot or floral grouping in a sleeve with expandable sidewalls
JPH11222244A (ja) * 1998-02-02 1999-08-17 Hosokawa Yoko:Kk 医薬、医療用ガセット袋
US6395534B1 (en) * 1999-03-31 2002-05-28 Council Of Scientific And Industrial Research White rot-lignin-modifying fungus Flavodon flavus and a process for removing dye from dye containing water or soil using the fungus
US7118906B2 (en) * 1999-03-31 2006-10-10 Council Of Scientific & Industrial Research Process for removal of polycyclic aromatic hydrocarbons in wastewater and other contaminated sites
US6385906B2 (en) 1999-07-23 2002-05-14 Southpac Trust Int'l. Inc. Floral sleeve having expandable sidewalls
US6783277B2 (en) 2001-01-12 2004-08-31 Scholle Corporation Stand up bag
US6695757B2 (en) 2001-01-12 2004-02-24 Scholle Corporation Method of manufacturing a standup bag
US6746388B2 (en) 2001-01-12 2004-06-08 Scholle Corporation Method of designing a standup bag
US20030054929A1 (en) * 2001-09-19 2003-03-20 Post William E. Flat bottom, stand up bag and method of manufacturing the same
AU2003215115A1 (en) 2002-02-07 2003-09-02 Scholle Corporation An internal brace for a standup flexible container
DK176261B1 (da) * 2003-02-04 2007-05-07 Coloplast As Emballage til stomiindretning
ITBS20050072A1 (it) * 2005-06-14 2006-12-15 D & C S R L Materiale composito, in particolare per realizzare shopping bag, borse, sacchetti, contenitori, involucri e simili per il confezionamento o il trasporto di articoli
US20110211775A1 (en) * 2010-03-01 2011-09-01 Conwed Plastics Llc Mesh bag for automated filling and method for making same
WO2013014231A1 (fr) * 2011-07-28 2013-01-31 Hollister Incorporated Emballage d'élément de scellement étanche pour stomie et élément de scellement étanche pour stomie associé
US9096347B2 (en) 2012-03-20 2015-08-04 Berry Plastics Corporation Stand-up Package
US20140363105A1 (en) * 2013-06-07 2014-12-11 Berry Plastics Corporation Standup bag

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US2996238A (en) * 1957-11-12 1961-08-15 Crown Zellerbach Corp Pasted container
CH480988A (de) * 1967-09-01 1969-11-15 Hesser Ag Maschf Beutel mit Rechteckquerschnitt mit einem Bodenverschluss
US3485438A (en) * 1968-06-19 1969-12-23 Union Camp Corp Bonding arrangement for plies of multiply bags
DE1939591A1 (de) * 1969-08-04 1971-02-25 Windmoeller & Hoelscher Sack oder Beutel mit geklebtem Kreuz- oder Klotzboden und Verfahren zu seiner Herstellung
CH595982A5 (fr) * 1975-08-28 1978-02-28 Sig Schweiz Industrieges
DE3123150A1 (de) * 1981-06-11 1982-12-30 Hans 4000 Düsseldorf Lissner Behaelter aus flexiblem material fuer die lagerung und den transport von schuettguetern
US4808421A (en) * 1987-02-24 1989-02-28 Packaging Concepts, Inc. Formed polymer film package for microwave cooking
DE8706305U1 (de) * 1987-05-02 1987-06-19 Bischof Und Klein Gmbh & Co, 4540 Lengerich Klotzbodenbeutel
DE3719085A1 (de) * 1987-06-06 1988-12-15 Fr Noltemeyer Gmbh Block- oder kreuzbodenbeutel
DE4102548A1 (de) * 1991-01-29 1992-07-30 Kochsiek Maschinenbau Soltau G Seitenfaltenbeutel
GB2254065A (en) * 1991-03-23 1992-09-30 Scott Robertson Limited A flexible bag.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015103824B4 (de) 2015-03-16 2018-09-13 Wernfried Voelker Papierbeutel und dazu gehöriges Herstellungsverfahren

Also Published As

Publication number Publication date
US5755514A (en) 1998-05-26
EP0722408A1 (fr) 1996-07-24
ATE170485T1 (de) 1998-09-15
DE59406850D1 (de) 1998-10-08
DK0722408T3 (da) 1999-06-07
DE9315795U1 (de) 1994-01-05
WO1995011169A1 (fr) 1995-04-27

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