EP2716566A1 - Wiederverschließbares Flowpack - Google Patents

Wiederverschließbares Flowpack Download PDF

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Publication number
EP2716566A1
EP2716566A1 EP12187602.3A EP12187602A EP2716566A1 EP 2716566 A1 EP2716566 A1 EP 2716566A1 EP 12187602 A EP12187602 A EP 12187602A EP 2716566 A1 EP2716566 A1 EP 2716566A1
Authority
EP
European Patent Office
Prior art keywords
flowpack
flap
pressure
reclosable
sensitive adhesive
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.)
Withdrawn
Application number
EP12187602.3A
Other languages
English (en)
French (fr)
Inventor
Jens Pilzecker
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 Kreuzlingen AG
Original Assignee
Amcor Flexibles Kreuzlingen AG
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 Kreuzlingen AG filed Critical Amcor Flexibles Kreuzlingen AG
Priority to EP12187602.3A priority Critical patent/EP2716566A1/de
Publication of EP2716566A1 publication Critical patent/EP2716566A1/de
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855Peelable seals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2575/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52Details
    • B65D2575/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/586Opening or contents-removing devices added or incorporated during package manufacture with means for reclosing

Definitions

  • the present invention is related to a reclosable flowpack.
  • Reclosable flowpacks are well known by those skilled in the art.
  • the reclose means are either of a mechanical kind, such as zips for example disclosed in documents US 5,561,966 or US 4,894,975 , or based on adhesive tapes.
  • Reclosable flowpacks comprising adhesive tapes are for example disclosed in documents US 5,078,509 , US 4,622,799 and US 2004/0091183 .
  • EP 1 939 106 discloses a reclosable flowpack comprising a fin seal, said fin seal comprising an adhesive used both for closing the package during the shelf life of the product and for reclosing it after a first use.
  • the reclosable adhesive is used both for sealing the package and for reclosing it, the first opening force and the subsequent opening forces are closely linked together. In that case, it becomes difficult to cope with two antagonist properties, i.e. having a strong seal during the shelf life to insure the integrity of the packaged product and having a seal that is easy to reopen after a first use.
  • the reopening forces of pressure-sensitive adhesives are usually weaker than the seal force, a degradation of the adhesion being for example due to surface contamination by fatty products or dust.
  • the present invention is related to a reclosable flowpack comprising:
  • the pressure-sensitive adhesive is located inside the flowpack and protected by a transfer tape, said transfer tape being, in use, peeled off from said pressure-sensitive adhesive before reclosing said flowpack.
  • the pressure-sensitive adhesive can be located in one of the layer of a multilayer film forming the flowpack, said layer being located between a support layer and a rupturable sealant layer.
  • the fin seal is a cold seal formed by the pressure-sensitive adhesive.
  • the fin seal is a peelable fin seal.
  • the flowpack of the invention comprises a second weakened line located between the first weakened line and the fin seal allowing, in use, the tearing of the strip by breaking both weakened lines.
  • the weakened line is located at a distance "X" from the flap fold and the pressure-sensitive adhesive is located at a distance "Y" of the flap fold, "X" being smaller than "Y".
  • the one or more weakened line(s) is/are scored line(s).
  • the film forming the flowpack comprises an oriented polymer layer and an aluminium layer.
  • Fig. 1 represents a schematic top view of a closed flowpack according to the invention.
  • Fig. 2 represents a schematic cross-section of a flowpack according to the first embodiment of the invention before opening, said flowpack comprising a peelable fin seal and a transfer tape protecting the pressure-sensitive adhesive.
  • Fig. 3 represents a schematic cross-section of a flowpack as in Fig. 2 after peeling the peelable fin seal.
  • Fig. 4 represents a schematic cross-section of a flowpack as in Fig. 3 after tearing the strip.
  • Fig. 5 represents a schematic cross-section of a flowpack as in Fig. 4 after removing the transfer tape.
  • Fig. 6 represents a schematic cross-section of a flowpack according to the invention after reclosing.
  • Fig. 7 represents a schematic cross-section of an alternative of the first embodiment of the invention comprising a second weakened line.
  • Fig. 8 represents a schematic cross-section of the second embodiment of the invention, wherein the pressure-sensitive adhesive is located below a rupturable sealant layer, as seen in a detailed view.
  • Fig. 9 represents a schematic cross-section of the third embodiment of the invention, wherein the pressure-sensitive adhesive forms the fin seal.
  • the present invention is related to a reclosable flowpack 1 comprising peelable cross seals 11 and a flap 8, wherein an easy access to the packaged goods is obtained by tearing a strip 7, said strip 7 being at least partially part of the flap 8.
  • An advantage of such an opening procedure is that it provides an easier access to the package goods.
  • a weakened line 3 is located on the flowpack, in a direction that is essentially parallel to the fin seal.
  • weakened lines 3, 15. This can be pre-cut multilayer materials made of superposed pre-cut monolayers as disclosed for example in EP 1 817 165 and US 5,312,659 . It can be induced by slits penetrating through one of the film layers as disclosed in EP 0 596 747 A1 .
  • the weakening can be obtained for example by laser scoring of the film 2 limited to a certain thickness as disclosed in US 2005/0084636-A1 and US 5,630,308 . Or it can be obtained by scratching the film by means of sand paper, or by scratching an intermediate layer in a laminated structure as disclosed in EP 1 757 533 by the Applicant.
  • the weakened line 3 can also comprise a tear strip to ease the opening (not represented).
  • Typical multilayer structures for flexible packaging films comprising weakened lines are:
  • the invention provides the possibility of reclosing the flowpack 1 by using the remaining part of the flap 8, a pressure-sensitive adhesive 5 (PSA) being present on the internal surface of the remaining part of the flap 8.
  • PSA pressure-sensitive adhesive
  • the reclosing seal obtained by the pressure-sensitive adhesive 5 is a lap seal.
  • Pressure-sensitive adhesives usually have compositions based on natural and/or synthetic rubber, optionally used in combination with modified cellophanes, phenolformaldehyde resins or waxes.
  • polymers based on styrene, (meth)acrylic acid or vinyl ether are widely used, alone or as a mixture.
  • silicone resins may also be employed. Compositions including mixtures of natural and synthetic rubbers and copolymers of (meth)acrylic acid and styrene are preferred.
  • pressure-sensitive adhesives are deposited onto the substrate (web) at a thickness of approximately 1 to 5g/m 2 .
  • Pressure-sensitive adhesives can be applied in the form of a solution, or as dispersion, or even in the molten state. Coating-deposition techniques well-known by those skilled in the art may be employed, such as, for example, heliographic or flexographic printing, or offset printing.
  • the pressure-sensitive adhesives 5 can also be deposited on a transfer tape 4 slitted in the right dimensions, and then applied to the film 2 before the manufacturing of the flowpack 1.
  • Examples of suitable commercially-available pressure-sensitive adhesives are produced by Henkel under the grade names 22-263, 22-272, 22-392, 22-477, 22-848, 22-861, or produced by Sun Chemical under the grade names S7188, S7883, S7936, S7979, S7985, S8011, S8039, S8041, S8044, S8046, S8057, S8078, S8083, S8093, S8095, S8110, S9044, C1225, S8124, S8129, S8130.
  • the weakened line 3 can be located at a distance "X" from the flap fold, but that distance cannot be larger than the distance "Y” between the pressure-sensitive adhesive and said flap fold (see Fig. 2 ).
  • said distance "X" is larger than the size of the package goods.
  • the strip 7 must also be detachable from the flap, which can be obtained by having the fin seal be peelable, as represented in Fig. 2 , 8 and 9 .
  • a second weakened line 15 can be located near the fin seal 6 as represented in Fig. 7 .
  • peelable is meant that the seal can be broken by delamination at the original interface (adhesive failure), or by propagating a fracture through a specially-designed peelable layer (cohesive failure), or by delaminating one of the films at an interface between two layers (adhesive failure between two layers).
  • the fin seal is a cold seal formed by the pressure-sensitive adhesive 5, as represented in Fig. 9
  • the first embodiment of the present invention is represented in Fig. 2 and 7 , where the pressure-sensitive adhesive 5 is located inside the flowpack and protected by a transfer tape 4, said transfer tape 4 being peeled off from said pressure-sensitive adhesive 5 before reclosing said flowpack 1.
  • the pressure-sensitive adhesive 5 is located in a layer 14 of the film 2 forming the flowpack, said layer 14 being located between a support layer 13 and a rupturable sealant layer 12.
  • a typical structure in this case is OPET/inks/OPET/PSA/PETG, the sealant layer being the PETG layer, this layer typically having a thickness of less than 15 ⁇ m, preferably less than 10 ⁇ m.
  • the rupturable sealant layer is preferably weakened along the breaking lines 16.
  • a method to produce such kind of breaking lines 16 is for example disclosed in EP 1 077 186 .
  • Fig. 1 and 2 represent two views of the first and preferred embodiment of the invention.
  • the flowpack 1 comprises two peelable cross-seals 11 and a peelable fin seal 6 joining two sides of a flap.
  • the transfer tape 4 protects the pressure-sensitive adhesive 5 from contamination from the package goods. For example, fatty contamination from chocolate can lower the adhesion properties of the pressure-sensitive adhesive 5 if it is not protected.
  • the opening is first performed by peeling off the fin seal 6 as represented in Fig. 3 .
  • the strip 7 is then torn away from the film 2, as represented in Fig. 4 .
  • the transfer tape is then removed as represented in Fig. 5 and the flowpack 1 is reclosed by unfolding the remaining part of the flap on the external side of the film 2, thereby forming a lap seal as represented in Fig. 6 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP12187602.3A 2012-10-08 2012-10-08 Wiederverschließbares Flowpack Withdrawn EP2716566A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12187602.3A EP2716566A1 (de) 2012-10-08 2012-10-08 Wiederverschließbares Flowpack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12187602.3A EP2716566A1 (de) 2012-10-08 2012-10-08 Wiederverschließbares Flowpack

Publications (1)

Publication Number Publication Date
EP2716566A1 true EP2716566A1 (de) 2014-04-09

Family

ID=47008392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12187602.3A Withdrawn EP2716566A1 (de) 2012-10-08 2012-10-08 Wiederverschließbares Flowpack

Country Status (1)

Country Link
EP (1) EP2716566A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016002249A1 (de) * 2016-02-26 2017-08-31 Dmk Deutsches Milchkontor Gmbh Schlauchbeutelverpackung
EP3634867A4 (de) * 2017-06-05 2020-12-30 Bemis Company, Inc. Flexible, wiederverschliessbare verpackungen
US20220169422A1 (en) * 2019-01-31 2022-06-02 Automated Packaging Systems, Llc Reclosable bag and methods of forming and using the same
US11465810B2 (en) * 2017-05-08 2022-10-11 Bemis Company, Inc. Package having peel reseal feature

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622799A (en) 1984-02-17 1986-11-18 Borden, Inc. Resealable package, method of making and use
US4785940A (en) * 1987-07-02 1988-11-22 Minnesota Mining And Manufacturing Company Flexible bag with a pressure sensitive adhesive closure strip
US4894975A (en) 1988-03-09 1990-01-23 Minigrip, Inc. Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
US5078509A (en) 1990-09-28 1992-01-07 Recot, Inc. Resealable package
EP0596747A1 (de) 1992-11-06 1994-05-11 Curwood, Inc. Leicht zu öffende Verpackung, Folie und Herstellungsverfahren
US5312659A (en) 1991-06-25 1994-05-17 Toyo Seikan Kaisha Ltd. Laminated film bag for packaging food
US5561966A (en) 1988-09-06 1996-10-08 Kcl Corporation Apparatus and method for manufacturing flexible reclosable containers
US5630308A (en) 1990-07-09 1997-05-20 American National Can Company Laser scoring of packaging substrates
FR2741605A1 (fr) 1995-11-29 1997-05-30 Soplaril Sa Structure d'obturation pour un contenant, contenant muni de cette structure et procede d'obturation du contenant
EP1077186A1 (de) 1999-08-17 2001-02-21 Danisco Flexible France Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung
US20040091183A1 (en) 2002-03-18 2004-05-13 Dierl Martin Bernhard Vertical stand-up pouch with integrated reclose strip
US20050084636A1 (en) 2003-10-20 2005-04-21 Papenfuss Daniel S. Tear initiation and directional tear films and packages made therefrom
EP1757533A1 (de) 2005-08-26 2007-02-28 Amcor Flexibles A/S Leicht zu öffnende Verpackung bestehend aus einem Laminat und Verfahren zur dessen Herstellung
EP1817165A1 (de) 2004-11-29 2007-08-15 Alcan Packaging Italia S.r.l. Mehrschichtige laminierte folie für verpackungen
EP1939106A1 (de) 2006-12-29 2008-07-02 Kraft Foods R & D, Inc. Wiederverschließbare Verpackung
EP2111982A1 (de) 2008-04-25 2009-10-28 Amcor Flexibles Transpac N.V. Verfahren zur Herstellung eines dünnen Polymerfilms

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4622799A (en) 1984-02-17 1986-11-18 Borden, Inc. Resealable package, method of making and use
US4785940A (en) * 1987-07-02 1988-11-22 Minnesota Mining And Manufacturing Company Flexible bag with a pressure sensitive adhesive closure strip
US4894975A (en) 1988-03-09 1990-01-23 Minigrip, Inc. Method and apparatus for making reclosable bags with fastener strips in a form fill and seal machine
US4894975B1 (de) 1988-03-09 1991-12-03 Minigrip Inc
US5561966A (en) 1988-09-06 1996-10-08 Kcl Corporation Apparatus and method for manufacturing flexible reclosable containers
US5630308A (en) 1990-07-09 1997-05-20 American National Can Company Laser scoring of packaging substrates
US5078509A (en) 1990-09-28 1992-01-07 Recot, Inc. Resealable package
US5312659A (en) 1991-06-25 1994-05-17 Toyo Seikan Kaisha Ltd. Laminated film bag for packaging food
EP0596747A1 (de) 1992-11-06 1994-05-11 Curwood, Inc. Leicht zu öffende Verpackung, Folie und Herstellungsverfahren
FR2741605A1 (fr) 1995-11-29 1997-05-30 Soplaril Sa Structure d'obturation pour un contenant, contenant muni de cette structure et procede d'obturation du contenant
EP1077186A1 (de) 1999-08-17 2001-02-21 Danisco Flexible France Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung
US20040091183A1 (en) 2002-03-18 2004-05-13 Dierl Martin Bernhard Vertical stand-up pouch with integrated reclose strip
US20050084636A1 (en) 2003-10-20 2005-04-21 Papenfuss Daniel S. Tear initiation and directional tear films and packages made therefrom
EP1817165A1 (de) 2004-11-29 2007-08-15 Alcan Packaging Italia S.r.l. Mehrschichtige laminierte folie für verpackungen
EP1757533A1 (de) 2005-08-26 2007-02-28 Amcor Flexibles A/S Leicht zu öffnende Verpackung bestehend aus einem Laminat und Verfahren zur dessen Herstellung
EP1939106A1 (de) 2006-12-29 2008-07-02 Kraft Foods R & D, Inc. Wiederverschließbare Verpackung
EP2111982A1 (de) 2008-04-25 2009-10-28 Amcor Flexibles Transpac N.V. Verfahren zur Herstellung eines dünnen Polymerfilms

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016002249A1 (de) * 2016-02-26 2017-08-31 Dmk Deutsches Milchkontor Gmbh Schlauchbeutelverpackung
US11465810B2 (en) * 2017-05-08 2022-10-11 Bemis Company, Inc. Package having peel reseal feature
EP3634867A4 (de) * 2017-06-05 2020-12-30 Bemis Company, Inc. Flexible, wiederverschliessbare verpackungen
US11167901B2 (en) 2017-06-05 2021-11-09 Bemis Company, Inc. Flexible resealable packages
US20220169422A1 (en) * 2019-01-31 2022-06-02 Automated Packaging Systems, Llc Reclosable bag and methods of forming and using the same
US11827419B2 (en) * 2019-01-31 2023-11-28 Sealed Air Corporation (Us) Reclosable bag and methods of forming and using the same

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