EP1181205A1 - Aufrechtstehender beutel für fliessbare produkte - Google Patents

Aufrechtstehender beutel für fliessbare produkte

Info

Publication number
EP1181205A1
EP1181205A1 EP00912422A EP00912422A EP1181205A1 EP 1181205 A1 EP1181205 A1 EP 1181205A1 EP 00912422 A EP00912422 A EP 00912422A EP 00912422 A EP00912422 A EP 00912422A EP 1181205 A1 EP1181205 A1 EP 1181205A1
Authority
EP
European Patent Office
Prior art keywords
wall
top wall
stand
edge portion
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.)
Granted
Application number
EP00912422A
Other languages
English (en)
French (fr)
Other versions
EP1181205B1 (de
Inventor
Werner Schulz
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.)
Amcor Flexibles ApS
Original Assignee
Amcor Flexibles Europe AS
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 Amcor Flexibles Europe AS filed Critical Amcor Flexibles Europe AS
Publication of EP1181205A1 publication Critical patent/EP1181205A1/de
Application granted granted Critical
Publication of EP1181205B1 publication Critical patent/EP1181205B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855—Peelable seals

Definitions

  • the invention relates to a stand-up bag of a heat-sealable or weldable plastic film for containing in particular flowable or pourable products and comprising:
  • Stand-up bags of this type are known inter alia from US-A-3,935,993 and DE-Al-2553854. Due their excellent standing properties and stability the bags have been used for a wide range of products, in particular for liquid, paste-like, powdery and granular products. It is however considered a drawback of the known stand-up bags that they are difficult to open why a pair of scissors or a knife is often needed or - as for instance known from WO 93/16928 and EP-A2-0.380.110 - they are provided with special discharging arrangements for easy removal of the product which makes the bag more expensive.
  • Brief Description of the Invention are known inter alia from US-A-3,935,993 and DE-Al-2553854. Due their excellent standing properties and stability the bags have been used for a wide range of products, in particular for liquid, paste-like, powdery and granular products. It is however considered a drawback of the known stand-up bags that they are difficult to open why a pair of scissors or a knife is often
  • the object of the invention is to provide a stand-up bag of the above type which is easy to open toollessly and which is simple and inexpensive to manufacture.
  • the stand-up bag according to the invention is characterised in that at least one of the transverse connections between the top wall and the side walls is a peelable connection provided between an upper edge portion of the top wall and an upper edge portion of the adjacent side wall.
  • the bag is thereby easily opened by gripping the top wall and the side wall connected by means of the peelable connection and pulling the two walls apart such that the peelable connection is broken.
  • the upper edge portions of the top wall and the side wall may extend beyond the transverse peelable connection to form gripping members to be gripped when the peelable connection is to be broken.
  • this embodiment of the invention is advantageous in that the portion of the top wall extending beyond the peelable connection may serve as a form of spout after the bag has been opened.
  • the peelable connection may comprise a film strip arranged between the upper edge portions of the top wall and the side walls, said film strip being firmly (non-peelably) heat-sealed to one of the edge portions, preferably to the edge portion of the top wall, the strip having a first surface of a sealing medium corresponding substantially to the sealing medium of the adjacent bag wall, and heat-sealed peelably to the second edge portion, preferably the edge portion of the side wall, the strip having a second surface of a sealing medium heat-sealed peelably to the sealing medium of the adjacent bag wall.
  • the first outer sealing medium layer of the film strip may be made from substantially polyethylene (PE) and the second outer sealing medium layer thereof may comprise a mixture of polyethylene (PE) and polybutylene.
  • PE polyethylene
  • the second outer sealing medium layer which is a mixture of PE and polybutylene
  • the peelable connection may comprise a film strip arranged between the upper edges of the top wall and the side wall and having a first and a second outer sealing medium layer with which it is firmly (non-peelably) heat-sealed to the respective edge portions and further having an intermediate layer peelably connected to at least one of the outer sealing medium layers having a tear resistance weaker than the peel strength between the intermediate layer and the said sealing medium layer.
  • the peelable connection is thus opened by tearing the weak sealing medium layer on both sides of the sealing seam and by a delamination between the weak sealing medium layer and the intermediate layer.
  • the intermediate layer may advantageously be formed of a pressure-sensitive adhesive, eg a self-sealing adhesive of the hot-melt type.
  • a pressure-sensitive adhesive eg a self-sealing adhesive of the hot-melt type.
  • the intermediate layer is exposed when the peelable connection of the bag is opened.
  • the intermediate layer is made from a self-sealing adhesive, the layer adheres to the opposing side wall after the initial opening of the bag to enable reclosure of the bag.
  • the peelable connection may comprise a peel lacquer strip of the hot-melt type which is applied to at least one of the mutually facing surfaces of the top wall and the upper edge portions of the side wall.
  • a hot-melt strip is easy to apply and provides the peelable connections with a peel strength which is easy to control.
  • the upper edge portion of the top wall may be folded down to abut the outer face of the adjacent side wall.
  • the free edge of the folded-down edge portion is preferably positioned above the peelable connection between the top wall and the side wall.
  • the folded-down edge portion forms a flap to allow reclosure of the bag after the peelable connection has been opened.
  • both the upper edge portion of the top wall and the upper edge portion of the adjacent side wall may be folded down onto the adjacent side wall.
  • the folded-down edge portions thereby form a flap to allow reclosure of the bag after the peelable connection has been opened.
  • the fold may advantageously be provided in the same level as the opposite edge of the top wall and the upper edge of the opposite side wall. As a result the bag is provided with excellent stackability.
  • the upper edge portion of either the side wall or the top wall may be folded down for abutment inner face to inner face, and the wall with the folded-down edge portion may have an outer sealing medium layer heat-sealing peelably to the inner sealing medium layer of the other wall.
  • the outer sealing medium layer of the wall with the folded-down edge may advantageously be a copolymer comprising polyethylene and polypropylene when the inner sealing medium layer of the bag walls is made from substantially polyethylene.
  • the peel strength of the peelable connections may range from 100 to 800 g/20 mm, preferably from 200 to 600 g/20 mm, and most preferably from 300 to 500 g/20 mm.
  • Fig. 1 is an isometric view of a stand-up bag according to the invention
  • Fig. 2 is a side view of a collapsed stand-up bag according to the invention
  • Fig. 3 is a sectional view along the line III-III in Fig. 2, the walls of the stand-up bag for purely illustrative reasons being separated from each other and the seals therebetween thus being partially omitted or shown diagrammatically, Fig. 3 further illustrating a first embodiment of a peelable connection between a side wall and a top wall of the bag,
  • Fig. 4 is a partial sectional view corresponding to Fig. 3 to illustrate a second embodiment of a peelable connection
  • Fig. 5 is a partial sectional view corresponding to Fig. 3 to illustrate a third embodiment of the peelable connection
  • Fig. 6 is a partial sectional view corresponding to Fig. 3 to illustrate a fourth embodiment of a peelable connection
  • Fig. 7 is a partial sectional view corresponding to Fig. 3 through a first modification of the embodiment shown in Fig. 5, and Fig. 8 is a partial sectional view corresponding to Fig. 3 of a second modification of the embodiment shown in Fig. 5.
  • the stand-up bag according to the invention shown in Figs. 1 to 3 comprises two opposed side walls 1 ,2, a top wall 3 and a bottom wall 4 arranged opposite one another.
  • the side walls 1 ,2 are sealed together by means of side seams 5,6 extending along two opposed side edges.
  • the bottom wall 4 is folded inwardly along a bottom wall fold 13 and sealed to the side walls 1 ,2 along two opposed transverse seals 7.8.
  • the top wall 3 is folded inwardly along a top wall fold 14 and sealed to the side wall 1 along an upper transverse seal 11 and connected to the side wall 2 by means of a transverse peelable connection 12.
  • the transverse peelable connection 12 is arranged opposite the transverse seal 11 and is explained in detail below.
  • both the folded top wall 3 and the folded bottom wall 4 is sealed onto itself and to the side walls along the side seams 5,6.
  • the bag may further have oblique seams 9J0, each extending from the fold area of the bottom wall 4 in the respective side seam 5,6 to the adjacent transverse seams 7,8.
  • Each of the oblique seams 9J0 connects a side wall 1 ,2 to the adjacent area of the bottom wall 4.
  • an upper edge portion 15 of the side wall 2 extends slightly beyond the transverse peelable connection 12.
  • an upper edge portion 16 of the top wall 3 extends slightly beyond the transverse peelable connection 12 between the top wall 13 and the side wall 2, said edge portions 15, 16 forming gripping members to be gripped when the peelable connection 12 is to be broken for opening of the bag.
  • the peelable connection comprises a film strip 17 between the upper edge portions 16,15 of the top wall 3 and the side wall 2, said film strip being sealed to the edge portion of the top wall 3 by means of a strong seal and sealed to the edge portion 15 of the side wall 2 by means of a peelable seal.
  • the strip 17 comprising a first surface 18 of a sealing medium facing the top wall 3, said sealing medium layer corresponding substantially to the sealing medium layer forming the inner surface 19 of the top wall 3 and further comprising a second surface 20 of a sealing medium layer facing the side wall 2, said sealing medium sealing peelably by heat sealing to the sealing medium layer forming the inner surface 21 of the side wall 2.
  • the first surface 18 of the strip 17 may also be made from polyethylene, while the second surface 20 thereof may be formed of a mixture of polyethylene and polybutylene.
  • Fig. 3 illustrates that the side walls 1 ,2 and the bottom and top walls 4,3 are formed of separate films sealed together, it should be understood that the bag may be formed of a single film web as suggested by means of the dotted lines 22 to 24.
  • a plurality of different plastic laminates may be used for manufacturing the bag according to the invention. Examples hereof include:
  • a laminate having both an outer and an inner sealing medium layer such that the bottom wall is sealed onto itself along side seams 5,6 in order obtain the intended good standing ability.
  • This may be obtained by means of the laminate coex OPP/PETP (polyester)/PE, in which the PE-layer is on the inner side seen in relation to the finished bag and coex OPP denotes a co-extruded oriented polypropylene film provided with a thin sealing medium layer on each side comprising a copolymer of PP and PE.
  • a barrier layer eg an aluminium film, may be provided between the PETP layer and the PE layer or the coex OPP film.
  • the PETP layer may be replaced by an oriented polyamide (OPA).
  • a stronger or more rigid film may be used for the side walls than for the bottom and top walls.
  • the bag is then made from four sheet webs.
  • the same laminates as mentioned above may be used, thicker laminates being used for the side walls than for the bottom and top walls.
  • PETP/PE laminate or PETP/PP laminate
  • PE/PETP/PE laminate PE/PETP/PE laminate
  • PP/PETP/PP laminate PE/PETP/PP laminate
  • the above coex OPP/PETP/ PE laminate for the bottom and top walls.
  • PETP may be replaced by OPA and the laminates may comprise a barrier layer for instance in form of an aluminium film.
  • the bag may be formed from a single film web and from four separate film webs on a vertical form, fill and seal machine. The same applies to the manufacture of pre-fabricated bags, ie ready-made bags apart from one side seam.
  • Fig. 4 illustrates a second embodiment of a peelable connection 32 between the upper edge portion 15 of the side wall 2 and the upper edge portion 16 of the top wall 3.
  • This peelable connection 32 comprises a film strip 37 arranged between the two edge portions 15 and 16 and having a first surface layer 28 and a second surface layer 29 of a sealing medium corresponding to the sealing medium forming the inner surface 19 of the top wall 3 and the sealing medium layer forming the inner surface 20 of the side wall 2, said film strip thus being heat-sealed non-peelably to the said surfaces.
  • An intermediate layer 30 is provided between the two surface layers 28 and 29 and is connected peelably to the second surface layer 29 and preferably connected more firmly to the first surface layer 28.
  • the tear resistance of the second surface layer 29 is weaker than the peel strength between said layer and the intermediate layer 30.
  • the layer 29 is torn off along the edges of the transverse seam 31 corresponding to the edges of the sealing tool used. Furthermore a delamination takes place between the layer 29 and the intermediate layer 30 in the portion corresponding to the sealing zone.
  • the use of an intermediate layer 30 of a pressure-sensitive adhesive allow for reclosure of the peelable connection 32 and thus of the bag after the initial opening thereof by pressing the exposed portion of the intermediate layer 30 against the corresponding portion of the edge portion 15 of the side wall 2.
  • Fig. 5 illustrates a third embodiment of a peelable connection 42.
  • This peelable connection comprises a hot-melt strip 47 applied to the inner surface 19 of the upper edge portion 16 of the top wall 3.
  • the peelable connection 42 of a width corresponding to the width of the sealing tolls is provided between the edge portion 15 of the side wall 2 and the edge portion 16 of the top wall 3 in the transverse sealing zone 41.
  • Fig. 6 illustrates a fourth embodiment of a peelable connection 52 between the upper edge portion 15 of the side wall and the upper edge portion 36 of the top wall 3.
  • the upper edge portion 36 of the top wall is folded down for abutment inner face to inner face such that the outer surface 38 of the top wall 3 faces the inner surface 20 of the side wall 3.
  • the peelable connection 52 is provided in a transverse sealing zone 51 in a width corresponding to the width of the sealing tool used to seal the upper edge portion 36 of the top wall 3 to the upper edge portion 15 of the side wall 2.
  • a plastic zipper comprising matable, reclosable zipper elements may be arranged above the peelable connection 12, 32, 42, 52, said elements carried by the opposed surfaces of the upper edge portion of the side wall 2 and the edge portion of the top wall 3. respectively in order to provide the bag with reclosability .
  • the zipper elements may be formed integrally with the respective upper edge portion or be arranged on zipper element strips sealed to the respective upper edge portions.
  • Fig. 7 illustrates a first modification of the embodiment described with reference to Fig. 5.
  • the upper end portion of the top wall 3 is provided with an extension 53 which is folded down (at reference numeral 59) onto the outer face of the upper edge portion 15 of the side wall 2.
  • the free edge 54 of extension 53 is situated above the seam 41 providing the peelable connection 42 between the side wall 2 and the top wall 3.
  • the extension 53 thus forms a flap on the bag allowing for reclosability.
  • the flap or extension 53 is further sealed to the outer face of the side wall 2 in the area of the side seams 5,6 of the side wall.
  • the flap is fusion-sealed to the side wall 2 in the area of the side seams 5,6, whereby optimum reclosability is obtained.
  • the fold 59 also may be positioned at the same level as the opposed free edge of the top wall and the opposed side wall, as described below in connection with a further modification.
  • Fig. 8 illustrates a second modification of the embodiment described with reference to Fig. 5.
  • the upper edge portion 60 of the top wall 3 and the upper edge portion 58 of the side wall 2 are jointly folded down onto the side wall at reference numeral 55.
  • the fold 55 is substantially at the same level as the opposed edge 61 of the top wall 3 and the upper edge 56 of the opposed side wall 1.
  • the lower free edges of the upper folded-down edge portions 58, 60 extend beyond the peelable connection 42 provided between the top wall 3 and the side wall 2 by the sealing zone 41.
  • the hot-melt strip 47' extends onto the folded- down edge portion 60 of the top wall 3.
  • an additional peelable connection is provided between the folded-down edge portions 58, 60 in a corresponding sealing zone 57.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Cartons (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP00912422A 1999-03-29 2000-03-29 Aufrechtstehender beutel für fliessbare produkte Expired - Lifetime EP1181205B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA199900425 1999-03-29
DK42599 1999-03-29
PCT/DK2000/000155 WO2000058166A1 (en) 1999-03-29 2000-03-29 Stand-up bag for flowable or pourable products

Publications (2)

Publication Number Publication Date
EP1181205A1 true EP1181205A1 (de) 2002-02-27
EP1181205B1 EP1181205B1 (de) 2003-05-28

Family

ID=8093386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00912422A Expired - Lifetime EP1181205B1 (de) 1999-03-29 2000-03-29 Aufrechtstehender beutel für fliessbare produkte

Country Status (19)

Country Link
EP (1) EP1181205B1 (de)
JP (1) JP2002540024A (de)
CN (1) CN1113023C (de)
AT (1) ATE241519T1 (de)
AU (1) AU765690B2 (de)
BR (1) BR0009398A (de)
CA (1) CA2366418A1 (de)
CZ (1) CZ294924B6 (de)
DE (1) DE60003026T2 (de)
DK (1) DK1181205T3 (de)
ES (1) ES2194712T3 (de)
HU (1) HUP0200397A3 (de)
NO (1) NO20014621L (de)
NZ (1) NZ514430A (de)
PL (1) PL351139A1 (de)
PT (1) PT1181205E (de)
RU (1) RU2244668C2 (de)
TR (1) TR200102757T2 (de)
WO (1) WO2000058166A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001085560A1 (en) * 2000-05-08 2001-11-15 Amcor Flexibles Europe A/S Stand-up bag of a heat-sealable plastic film for flowable products
US6446847B1 (en) * 2001-02-16 2002-09-10 Sonoco Development, Inc. Flexible container having integrally formed resealable spout
IL150519A (en) 2002-07-02 2006-08-20 Yeda Res & Dev Solar receiver with a plurality of working fluid inlets
EP1437311A1 (de) 2003-01-10 2004-07-14 Amcor Flexibles Europe A/S Kastenförmige Verpackung aus flexiblem, siegelbarem Verpackungsmaterial
GB2421013B (en) * 2004-12-10 2007-07-11 Amcor Flexibles Europe As Packaging with an openable top wall
US20070086683A1 (en) * 2005-10-18 2007-04-19 Yeager James W Package having recloseable pour spout
US8398306B2 (en) 2005-11-07 2013-03-19 Kraft Foods Global Brands Llc Flexible package with internal, resealable closure feature
EP1984270B1 (de) * 2006-02-07 2016-04-13 Nestec S.A. Isolierende, raumsparende stand-verpackungsanordnung für lebensmittel und getränke
US9232808B2 (en) 2007-06-29 2016-01-12 Kraft Foods Group Brands Llc Processed cheese without emulsifying salts
JP4526592B1 (ja) * 2009-07-17 2010-08-18 トタニ技研工業株式会社 製袋機
US8579779B2 (en) * 2009-07-17 2013-11-12 Totani Corporation Plastic bag making apparatus
RU2557614C2 (ru) 2010-02-26 2015-07-27 Интерконтинентал Грейт Брэндс ЛЛС Уф-отверждаемый самоклеющийся материал с низкой липкостью для повторно укупориваемых упаковок
NZ591355A (en) 2010-02-26 2012-09-28 Kraft Foods Global Brands Llc Low-tack adhesives having enhanced bonds with polymeric substrates for reclosable fastener and packages
JP5887694B2 (ja) * 2011-01-26 2016-03-16 凸版印刷株式会社 トップに開口部を設けた横ガセット袋の製造方法
DE102011001500A1 (de) * 2011-03-23 2012-09-27 Cofresco Frischhalteprodukte Gmbh & Co. Kg Aus einer Kunststofffolie hergestellter Flachbeitel und Verfahren zur Herstellung eines derartigen Flachbeutels
JP5944766B2 (ja) * 2012-07-09 2016-07-05 レンゴー株式会社 フィルム製包装袋
US20160068323A1 (en) * 2013-05-03 2016-03-10 Printpack Illinois, Inc. Recloseable Stand-Up Flexible Packages
WO2016202785A1 (en) * 2015-06-17 2016-12-22 Novozymes A/S Container
EP3184455A1 (de) * 2015-12-21 2017-06-28 Dow Global Technologies LLC Flexible verpackung mit dehnungsfunktion
JP6939200B2 (ja) * 2017-07-28 2021-09-22 凸版印刷株式会社 包装袋
JP6911626B2 (ja) * 2017-08-16 2021-07-28 凸版印刷株式会社 包装袋

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Also Published As

Publication number Publication date
DK1181205T3 (da) 2003-09-22
PL351139A1 (en) 2003-03-24
EP1181205B1 (de) 2003-05-28
CN1345282A (zh) 2002-04-17
ATE241519T1 (de) 2003-06-15
NZ514430A (en) 2003-02-28
AU765690B2 (en) 2003-09-25
AU3420000A (en) 2000-10-16
TR200102757T2 (tr) 2002-04-22
CA2366418A1 (en) 2000-10-05
BR0009398A (pt) 2002-01-08
WO2000058166A1 (en) 2000-10-05
PT1181205E (pt) 2003-10-31
JP2002540024A (ja) 2002-11-26
DE60003026D1 (de) 2003-07-03
HUP0200397A3 (en) 2002-06-28
DE60003026T2 (de) 2004-01-22
NO20014621D0 (no) 2001-09-24
CN1113023C (zh) 2003-07-02
RU2244668C2 (ru) 2005-01-20
HUP0200397A2 (hu) 2002-05-29
NO20014621L (no) 2001-11-28
ES2194712T3 (es) 2003-12-01
CZ20013409A3 (cs) 2002-08-14
CZ294924B6 (cs) 2005-04-13

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