US20040101215A1 - Bag for Transporting Moisture-Sensitive Goods - Google Patents

Bag for Transporting Moisture-Sensitive Goods Download PDF

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Publication number
US20040101215A1
US20040101215A1 US10/605,017 US60501703A US2004101215A1 US 20040101215 A1 US20040101215 A1 US 20040101215A1 US 60501703 A US60501703 A US 60501703A US 2004101215 A1 US2004101215 A1 US 2004101215A1
Authority
US
United States
Prior art keywords
bag
ply
bag according
wall
central
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.)
Abandoned
Application number
US10/605,017
Other languages
English (en)
Inventor
Helmut Sellmeier
Uwe Wiegand
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE and Co 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 Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Assigned to BISCHOF + KLEIN GMBH UND CO. KG reassignment BISCHOF + KLEIN GMBH UND CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WIEGAND, UWE, SELLMEIER, HELMUT
Publication of US20040101215A1 publication Critical patent/US20040101215A1/en
Abandoned 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
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • 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 bag for transporting moisture-sensitive goods, in particular, plastics granules.
  • the bag wall of a prior art bag is comprised of several layers, including a layer of kraft paper having supporting properties and an inner layer of a thermoplastic film forming a vapor barrier.
  • the manufacture of such multi-layer bags is extremely complex and expensive. Moreover, permanent strength properties and the reliability of the vapor barrier effect are often unsatisfactory.
  • the bag wall is comprised of a unilayer multi-ply laminate comprising an outer ply of crepe paper, a central ply of a barrier material forming a vapor barrier, and an inner ply of weldable thermoplastic material.
  • the inner film layer if needed together with the central ply of barrier material, forms the supporting ply within the unilayer laminate while the exterior ply of crepe paper functions essentially as an information carrier and an anti-slip device.
  • the bag can be manufactured on conventional bag manufacturing machines, is permanently seal-tight and has a high strength.
  • FIG. 1 shows a shortened perspective view of a bag with open upper end of the bag.
  • FIG. 2 shows a shortened sectional view of a bag wall provided with a longitudinal closure seam.
  • FIG. 3 shows a shortened sectional view for illustrating the multi-ply configuration of the unilayer laminate composite of the bag wall.
  • the bag 1 designed for transporting moisture-sensitive goods, in particular, plastic granules, has a bag wall of a unilayer multi-ply laminate.
  • the outer ply 2 is comprised of crepe paper
  • a central ply 3 is made of a barrier material forming a vapor barrier
  • the inner ply 4 is comprised of a weldable thermoplastic material, preferably, polyethylene.
  • the plies 2 and 3 are connected by means of a bonding agent ply 5 , and the plies 3 and 4 by means of a bonding agent ply 6 .
  • the crepe paper forming the outer ply has a grammage of approximately 70 g/m 2 to 110 g/m 2 , preferably approximately 90 g/m 2 , and forms the protective ply of the laminate.
  • the central ply 3 forming the vapor barrier is preferably aluminum foil.
  • aluminum foil it is also possible to employ metallized (metal-coated) PET (polyethylene terephthalate) film or PP (polypropylene) film.
  • PET polyethylene terephthalate
  • PP polypropylene
  • a polyester or polyvinyl alcohol film can also be used as a central ply 3 .
  • the plies 3 , 4 of the laminate are lined by pasting or by extrusion, wherein the linings form the bonding agent plies 5 and 6 .
  • the central ply 3 is preferably bonded between two films of polyethylene that is advantageously of the type M-LLDPE (metallocene linear low-density polyethylene).
  • the polyethylene ply forming the bonding agent ply 5 between the outer ply 2 and the central ply 3 has preferably a grammage of approximately 20 g/m 2 to 40 g/m 2 , preferably approximately 30 g/m 2
  • a polyethylene ply forming the bonding agent ply 6 between the central layer 3 and the inner layer 4 has preferably a grammage of approximately 70 g/m 2 , to 100 g/m 2 , preferably approximately 85 g/m 2 . It forms the primary supporting ply within the laminate.
  • the bag is advantageously formed as a gusseted bag wherein the outer fold edges 7 , 8 and 9 , 10 of the gussets 11 , 12 , respectively, are displaced in the transverse direction relative to one another.
  • the displacement in this connection is 2 mm-5 mm, preferably approximately 3 mm. Accordingly, the outer fold edges 7 , 8 or 9 , 10 of the gussets 11 , 12 are relieved of pressure loads and the resulting damages that can occur when the bags 1 , lying flat, are stored in a stack before they are filled.
  • the bag wall has a longitudinal closure seam (seal) which is advantageously formed as a fin seal 13 .
  • the seam area of the fin seal 13 is folded onto the outer side of the bag wall and glued thereto, wherein the glue or adhesive for the fixation of the seam area is a hotmelt adhesive 20 that is PU (polyurethane) based.
  • PU polyurethane
  • the bag 1 is closed off at both ends by means of staggered bottom flaps 14 or 15 . They are formed in that a first wall 16 of the bag 1 extends past the terminal edges 17 , 18 of the gussets 11 , 12 and a second wall 19 of the bag is staggered relative to the first wall 16 and ends below the terminal edges 17 , 18 of the gussets. This is shown in FIG. 1 for the upper staggered bottom flap 14 ; the lower bottom flap 15 is identically designed.
  • bottom flaps 14 , 15 are glued to the front wall 19 (bottom flap 14 ) or the rear wall 16 (bottom flap 15 ) by means of a hot melt adhesive 20 , preferably a PU-based one; this is illustrated in connection with the bottom flap 14 .
  • the folding lines for the bottom flaps 14 , 15 are positioned such that they extend at a spacing relative to the edge 21 of the wall 16 or 19 facing the bottom flaps 14 , 15 .
  • the bag wall is stable enough in order to withstand all loads during use.
  • the use of crepe paper for the outer ply provides an elasticity which prevents the formation of tears even under strong stretching or expansion loads.
  • the outer layer 2 can also be formed of kraft paper that is not creped.
  • the outer paper ply ensures in any case that the bags, when stacked, have a relatively strong resistance against slipping and sliding.
  • the outer ply 3 provides a suitable information carrier for informative printed messages and labels.
  • the outer ply 3 provides a protective function for the heat-sensitive plies arranged inside, in particular, the polyethylene ply 5 , when the bags are sealed at the customer facility by use of radiation heat.
  • the bag is absolutely seal-tight so that moisture-sensitive goods in the interior of the bag are protected safely from penetration of moisture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Laminated Bodies (AREA)
US10/605,017 2002-11-22 2003-09-02 Bag for Transporting Moisture-Sensitive Goods Abandoned US20040101215A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20218099U DE20218099U1 (de) 2002-11-22 2002-11-22 Sack für den Transport feuchtigkeitsempfindlicher Güter
DE20218099.9 2002-11-22

Publications (1)

Publication Number Publication Date
US20040101215A1 true US20040101215A1 (en) 2004-05-27

Family

ID=7977231

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/605,017 Abandoned US20040101215A1 (en) 2002-11-22 2003-09-02 Bag for Transporting Moisture-Sensitive Goods

Country Status (3)

Country Link
US (1) US20040101215A1 (fr)
EP (1) EP1422154A3 (fr)
DE (1) DE20218099U1 (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060062497A1 (en) * 2004-08-03 2006-03-23 Murray R C Flexible pouch with flat seam and method of forming
WO2007058717A1 (fr) * 2005-11-16 2007-05-24 Bristol-Myers Squibb Company Materiau d’emballage formant une barriere importante
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
CN101781446A (zh) * 2010-03-22 2010-07-21 福建师范大学 一种聚对苯二甲酸乙二醇酯瓶回收料制备塑料管件的方法
US20100189380A1 (en) * 2008-12-22 2010-07-29 Gary Sargin Heat Activated Adhesives for Bag Closures
US20100192520A1 (en) * 2008-12-22 2010-08-05 Jansen Mark E Heat activated adhesives for bag closures
US20100278455A1 (en) * 2007-07-18 2010-11-04 Cascade Designs, Inc. Flexible fluid container with removable slide fastener
US20100293897A1 (en) * 2009-05-21 2010-11-25 Jansen Mark E Heat Activated Adhesives for Bag Closures
US20110019944A1 (en) * 2008-12-22 2011-01-27 Gary Sargin Method and system for folding and sealing bags
US20110091140A1 (en) * 2008-06-17 2011-04-21 Bischof + Klein Gmbh & Co. Kg Side Gusseted Bag
US20110103721A1 (en) * 2009-05-15 2011-05-05 Gary Sargin Bag having sealable gussets
US8443578B2 (en) 2008-12-22 2013-05-21 Coating Excellence International Llc Apparatus for bag closure and sealing using heated air
US20140079342A1 (en) * 2011-04-29 2014-03-20 Gambro Lundia Ab Package, method for manufacturing a package, and use of such package
US20150030265A1 (en) * 2012-03-07 2015-01-29 Mondi Halle Gmbh Side-gusset bag made of a plastic fabric composite, and method for the production thereof
US9751661B2 (en) 2004-08-03 2017-09-05 Pouch Pac Innovations, Llc Flexible pouch and method of forming flexible pouch
CN111819137A (zh) * 2018-03-01 2020-10-23 诺信公司 定位焊接翅片密封件
US20220048678A1 (en) * 2020-08-14 2022-02-17 Mondi Ag Packaging bag on a paper basis, as well as method for the production of a packaging bag
EP3901054B1 (fr) 2020-04-20 2022-08-17 M. Neemann OHG Sac destiné à contenir une pluralité d'articles hygiéniques et son procédé de fabrication
US20230066934A1 (en) * 2020-04-23 2023-03-02 Nippon Paper Industries Co., Ltd. Method for packaging cellulosic polymer, method for transporting the same, and cellulosic polymer package
US20240317481A1 (en) * 2023-04-28 2024-09-26 Pratt Corrugated Holdings, Inc. Film deposition delivery container
US12252310B2 (en) 2023-01-30 2025-03-18 Pratt Corrugated Holdings, Inc. Tray and method therefor
US12264006B1 (en) 2023-12-21 2025-04-01 Pratt Corrugated Holdings, Inc. Insulated packaging liner
USD1083588S1 (en) 2023-12-28 2025-07-15 Pratt Corrugated Holdings, Inc. Packaging insert
US12497229B2 (en) 2024-01-29 2025-12-16 Pratt Corrugated Holdings, Inc. Packaging assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121397A1 (it) * 2012-08-07 2014-02-08 Lineapack Chinello S R L Sacchetto, particolarmente per il confezionamento di prodotti alimentari.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529765A (en) * 1968-10-18 1970-09-22 Du Pont Heat-sealable gusseted bag
US6329465B1 (en) * 1998-03-10 2001-12-11 Mitsui Chemical Inc Ethylene copolymer composition and uses thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1074712A (en) * 1965-05-17 1967-07-05 William Palfrey Ltd Paper sacks
US3784085A (en) * 1971-03-17 1974-01-08 Hudson Pulp & Paper Corp Multiwall bag construction
FR2362769A1 (fr) * 1976-08-30 1978-03-24 Bernhardt & Cie Element d'emballage en forme de sac, notamment pour produits granuleux, pulverulents ou liquides, et son procede de fabrication
JP2784850B2 (ja) * 1991-06-28 1998-08-06 富士写真フイルム株式会社 写真感光材料用易開封性包装体及びその製造方法
FR2704480B1 (fr) * 1993-04-28 1996-02-02 Hosokawa Yoko Kk Film stratifie et son procede de fabrication ainsi que recipient obtenu a partir d'un tel film stratifie.
DE20005048U1 (de) * 2000-03-20 2000-06-08 Stollpack Verpackungs GmbH, 51427 Bergisch Gladbach Warmhaltebeutel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529765A (en) * 1968-10-18 1970-09-22 Du Pont Heat-sealable gusseted bag
US6329465B1 (en) * 1998-03-10 2001-12-11 Mitsui Chemical Inc Ethylene copolymer composition and uses thereof

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060062497A1 (en) * 2004-08-03 2006-03-23 Murray R C Flexible pouch with flat seam and method of forming
US9751661B2 (en) 2004-08-03 2017-09-05 Pouch Pac Innovations, Llc Flexible pouch and method of forming flexible pouch
WO2007058717A1 (fr) * 2005-11-16 2007-05-24 Bristol-Myers Squibb Company Materiau d’emballage formant une barriere importante
CN101304875A (zh) * 2005-11-16 2008-11-12 布里斯托尔-迈尔斯斯奎布公司 高阻隔包装材料
US20100278455A1 (en) * 2007-07-18 2010-11-04 Cascade Designs, Inc. Flexible fluid container with removable slide fastener
US20110091140A1 (en) * 2008-06-17 2011-04-21 Bischof + Klein Gmbh & Co. Kg Side Gusseted Bag
US8899836B2 (en) * 2008-06-17 2014-12-02 Bischof + Klein Gmbh & Co. Kg Side gusseted bag
US9233502B2 (en) 2008-12-22 2016-01-12 Coating Excellence International Llc Method and apparatus for bag closure and sealing
US20100192520A1 (en) * 2008-12-22 2010-08-05 Jansen Mark E Heat activated adhesives for bag closures
US20110019944A1 (en) * 2008-12-22 2011-01-27 Gary Sargin Method and system for folding and sealing bags
US20100189380A1 (en) * 2008-12-22 2010-07-29 Gary Sargin Heat Activated Adhesives for Bag Closures
US8240915B2 (en) * 2008-12-22 2012-08-14 Coating Excellence International Llc Heat activated adhesives for bag closures
US8297840B2 (en) * 2008-12-22 2012-10-30 Coating Excellence International Llc Heat activated adhesives for bag closures
US8443578B2 (en) 2008-12-22 2013-05-21 Coating Excellence International Llc Apparatus for bag closure and sealing using heated air
US8475046B2 (en) 2008-12-22 2013-07-02 Coating Excellence International Llc Heat activated adhesives for bag closures
US20100158418A1 (en) * 2008-12-22 2010-06-24 Jansen Mark E Heat activated adhesives for bag closures
US20110103721A1 (en) * 2009-05-15 2011-05-05 Gary Sargin Bag having sealable gussets
US20100293897A1 (en) * 2009-05-21 2010-11-25 Jansen Mark E Heat Activated Adhesives for Bag Closures
CN101781446A (zh) * 2010-03-22 2010-07-21 福建师范大学 一种聚对苯二甲酸乙二醇酯瓶回收料制备塑料管件的方法
US20140079342A1 (en) * 2011-04-29 2014-03-20 Gambro Lundia Ab Package, method for manufacturing a package, and use of such package
US20150030265A1 (en) * 2012-03-07 2015-01-29 Mondi Halle Gmbh Side-gusset bag made of a plastic fabric composite, and method for the production thereof
US9758279B2 (en) * 2012-03-07 2017-09-12 Mondi Halle Gmbh Side-gusset bag made of a plastic fabric composite, and method for the production thereof
CN111819137A (zh) * 2018-03-01 2020-10-23 诺信公司 定位焊接翅片密封件
EP3901054B1 (fr) 2020-04-20 2022-08-17 M. Neemann OHG Sac destiné à contenir une pluralité d'articles hygiéniques et son procédé de fabrication
EP3901054B2 (fr) † 2020-04-20 2025-10-01 M. Neemann OHG Sac destiné à contenir une pluralité d'articles hygiéniques et son procédé de fabrication
US20230066934A1 (en) * 2020-04-23 2023-03-02 Nippon Paper Industries Co., Ltd. Method for packaging cellulosic polymer, method for transporting the same, and cellulosic polymer package
US20220048678A1 (en) * 2020-08-14 2022-02-17 Mondi Ag Packaging bag on a paper basis, as well as method for the production of a packaging bag
US12304706B2 (en) 2023-01-30 2025-05-20 Pratt Corrugated Holdings, Inc. Collapsible tray and methods therefor
US12252310B2 (en) 2023-01-30 2025-03-18 Pratt Corrugated Holdings, Inc. Tray and method therefor
US12441508B2 (en) 2023-01-30 2025-10-14 Pratt Corrugated Holdings, Inc. Insulating bag
US12448171B2 (en) 2023-01-30 2025-10-21 Pratt Corrugated Holdings, Inc. Tray and method therefor
US20240317481A1 (en) * 2023-04-28 2024-09-26 Pratt Corrugated Holdings, Inc. Film deposition delivery container
US12264006B1 (en) 2023-12-21 2025-04-01 Pratt Corrugated Holdings, Inc. Insulated packaging liner
USD1083588S1 (en) 2023-12-28 2025-07-15 Pratt Corrugated Holdings, Inc. Packaging insert
US12497229B2 (en) 2024-01-29 2025-12-16 Pratt Corrugated Holdings, Inc. Packaging assembly

Also Published As

Publication number Publication date
EP1422154A2 (fr) 2004-05-26
EP1422154A3 (fr) 2006-10-04
DE20218099U1 (de) 2003-02-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BISCHOF + KLEIN GMBH UND CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SELLMEIER, HELMUT;WIEGAND, UWE;REEL/FRAME:013921/0715;SIGNING DATES FROM 20030423 TO 20030428

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION