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WO2006019324A1 - Améliorations relatives aux emballages et fermetures refermables - Google Patents

Améliorations relatives aux emballages et fermetures refermables Download PDF

Info

Publication number
WO2006019324A1
WO2006019324A1 PCT/NZ2005/000220 NZ2005000220W WO2006019324A1 WO 2006019324 A1 WO2006019324 A1 WO 2006019324A1 NZ 2005000220 W NZ2005000220 W NZ 2005000220W WO 2006019324 A1 WO2006019324 A1 WO 2006019324A1
Authority
WO
WIPO (PCT)
Prior art keywords
package
closure flap
heat sealable
heat
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.)
Ceased
Application number
PCT/NZ2005/000220
Other languages
English (en)
Inventor
Barry Mulder
Kevin Piccione
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.)
Sealed Air New Zealand Ltd
Original Assignee
Sealed Air New Zealand Ltd
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
Priority claimed from NZ53481304A external-priority patent/NZ534813A/en
Application filed by Sealed Air New Zealand Ltd filed Critical Sealed Air New Zealand Ltd
Publication of WO2006019324A1 publication Critical patent/WO2006019324A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/20—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive
    • 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
    • B65D27/00—Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/14—Closures using adhesive applied to integral parts, e.g. flaps
    • B65D27/16—Closures using adhesive applied to integral parts, e.g. flaps using pressure-sensitive adhesive
    • 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
    • B65D27/00—Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/14—Closures using adhesive applied to integral parts, e.g. flaps
    • B65D27/18—Closures using adhesive applied to integral parts, e.g. flaps using heat-activatable adhesive
    • 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
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/22—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using heat-activatable adhesive

Definitions

  • the invention relates to packages which, after initial sealing closed, may be opened and subsequently resealed.
  • Such packages may include packages formed of plastics film material which is heat sealable and which are heat sealed closed.
  • Plastic bags may be formed from tubular film stock by heat sealing and cutting across the film stock to form each bag, with the mouth of the bag subsequently being heat sealed closed once the contents or product to be packaged is in the bag.
  • Plastic packages which are heat sealed closed also include packages produced on a form, fill & seal machine as a sheet of plastics film material is wrapped around a product, and heat sealed longitudinally and at either end to close the package.
  • the invention comprises a package formed of a plastics film material having a heat sealable surface, the package being formed to have an interior, exterior, and so that said heat sealable surface generally faces the interior of the package, with a portion of the plastics film material folded back on itself to provide an exposed portion of said heat sealable surface on the exterior of the package, the package also comprising a closure flap which is heat sealed or heat sealable to said exposed portion of the heat sealable surface, and an adhesive area also on the exterior of the package to which said closure flap may be adhered to reseal the closure flap after heat sealing of said closure flap to said exposed portion of the heat sealable surface and subsequent breaking of the heat seal of the closure flap.
  • the invention comprises a package formed of a plastics film material having a heat sealable surface on one side only of the plastics film material, the package being formed to have an interior, exterior, and so that said heat sealable surface generally faces the interior of the package, with a portion of the plastics film material folded back on itself to provide an exposed portion of said heat sealable surface on the exterior of the package, the package also comprising a closure flap which is heat sealed or heat sealable to said exposed portion of the heat sealable surface, and an adhesive area on the exterior of the package which fixes a terminal edge of said exposed portion of the plastics film material folded back, to the exterior of the package, and to which adhesive area said closure flap may be adhered to reseal the closure flap after heat sealing of said closure flap to said exposed portion of the heat sealable surface and subsequent breaking of the heat seal of the closure flap.
  • the invention comprises a package formed of a plastics film material having a heat sealable surface on one side only of the plastics film material, the package being formed to have an interior, exterior, and so that said heat sealable surface generally faces the interior of the package, with a portion of the plastics film material folded back on itself to provide an exposed portion of said heat sealable surface on the exterior of the package, the package also comprising a closure flap which is heat sealed or heat sealable to said exposed portion of the heat sealable surface, and an adhesive area on the exterior of the package with a terminal edge of said exposed portion of the plastics film material folded back adhered to cover a first part of said adhesive area leaving a second part of said adhesive area exposed, to which said second part the closure flap may be adhered to reseal the closure flap after heat sealing of said closure flap to said exposed portion of the heat sealable surface and subsequent breaking of the heat seal of the closure flap.
  • said adhesive area is a resealable adhesive area enabling separation of the closure flap from the adhesive area and subsequent resealing of the closure flap to the adhesive area.
  • the invention enables a resealable package to be formed from a plastics film material which requires to be heat sealable on one side only of the plastics film material. It is common for plastics film materials used for packaging to be multi-layer materials, with each layer contributing different properties to the material. Resealable packages of the invention may be formed of a plastics film material having a peelable heat seal layer on one side only.
  • Figure 1 is a perspective view of an embodiment of a package of the invention before breaking of the heat seal of the closure flap to open the package
  • Figure 2 is a perspective view of the package of Figure 1 after breaking of the heat seal of the closure flap and fully pulling back the closure flap to enable access to the interior of the package,
  • Figure 3 is a view of the package of Figures 1 and 2 similar to Figure 2, after part removal of a release sheet over a strip of resealable adhesive across the exterior of the package,
  • Figure 4 is a perspective view of the package of Figures 1 to 3 showing resealing of the closure flap to the strip of resealable adhesive to re-close the package,
  • Figure 5 is a cross-section view along line I — I of Figure 1 of the top of the package of Figures 1 to 4, before breaking of the heat seal to initially open the package,
  • Figure 6 is a cross-section view similar to Figure 5 of the top of an alternative embodiment of the package
  • Figure 7 is a cross-section view similar to Figures 5 and 6 but of a further alternative embodiment of the package.
  • the package is formed of a plastics film material having a heat sealable surface on at least one side of the film material.
  • both sides of the film may be heat sealable, but the objective of the invention is to enable a resealable package to be formed from a film having a heat sealable surface on one side of the plastics film material only.
  • the heat sealable surface is provided by a laminated or co-extruded heat sealable layer on one side of the film.
  • the film is folded back on itself at 1 and heat seals 2 and 3 between the layers of film on either side close the sides of the package to define the interior of the package.
  • the heat sealable surface of the film generally faces the interior of the package.
  • a portion 4 of the film is folded back at 3 (see Figure 5) on one side of the package, to provide an exposed portion of the heat sealable surface on an exterior side of the package.
  • a strip of double sided adhesive comprised by a double sided adhesive tape 7 for example, across the exterior of the package, fixes a terminal edge 8 of the folded portion 4 to the side 6 of the package as shown.
  • the opposite side of the adhesive strip 7 is preferably covered by a release sheet 9 in strip form (see Figures 2 and 3 but not shown in Figure 5).
  • a closure flap 10 extends from the other side of the package as shown.
  • the flap 10 is heat sealed to the exposed heat sealable surface of the folded back portion 4 to form a peelable or frangible heat seal 11.
  • the closure flap 10 is pulled away from the side 6 of the package to break the peelable or frangible heat seal 11 along it's length.
  • Figure 2 shows the package after breaking of the heat seal 11 and fully pulling back the closure flap 10. The pulled apart sides of the broken heat seal are indicated at l la and l ib in Figure 2.
  • the closure flap 10 is then pressed against the exposed surface of the adhesive strip 7, after removal of a release sheet 9 over the adhesive strip 7 if provided (see Figure 3).
  • the adhesive strip 7 may be a resealable adhesive so that the closure flap 10 may be pulled back to open the package and then resealed to the adhesive strip 7 a second and subsequent time. Less preferably, the adhesive strip 7 may allow only one sealing of the closure flap 10 to the adhesive strip 7, necessitating the second opening of the package being by tearing or cutting opening the package or the closure flap 10 and/or adhesive strip 7.
  • Figure 6 is a view similar to Figure 5 of an embodiment similar to that of Figures 1 to 5 with the same reference numerals indicating the same elements as in Figure 5, except that in Figure 6 one side of a double sided adhesive strip 7 is applied to exterior side 6 of the package and the terminal edge 8 of the folded back portion 4 is adhered to the opposite side of adhesive strip 7 along a first part 7a of the adhesive strip, to fix the folded portion 4 to the side of the package.
  • a release sheet (not shown) may be provided along a second part 7b of the adhesive strip 7, not covered by the terminal edge 8. To reseal the package after initial opening, i.e. after the flap 10 has been pulled away breaking the heat seal 11, the release sheet may be removed, enabling the closure flap 10 to be stuck down to the part 7b of the adhesive strip 7.
  • Figure 7 shows a further embodiment in which again the folded portion 4 is fixed to the exterior of the side 6 by a double sided adhesive strip 7.
  • all of the adhesive strip 7 is covered by the terminal edge 8 of the folded portion 4.
  • a line of hot melt adhesive may be used instead of the adhesive strip 7.
  • a second adhesive strip 12 is provided on the underside of the closure flap 10 as shown, typically also having a release cover sheet or strip (not shown). Again after the heat seal 11 has been broken to initially open the pack, adhesive strip 12 may be used to reseal down the closure flap 10 to the side 6 of the package.
  • closure flap 10 may also adhere to the adhesive strip 7 (or the exposed part 7b thereof- Figure 6) not covered by a release sheet.
  • the flap 10 will readily peel from the adhesive strip. Subsequently the bag may be reclosed by re-affixing the flap 10 to the adhesive strip.
  • the adhesive strip 7, and adhesive strip 12 in Figure 7 may comprise a continuous strip of adhesive, comprised by a double sided adhesive tape for example, or an adhesive strip may be extruded onto the exterior of the package.
  • the adhesive strip 7 may be provided as a series of separate adhesive zones or dots, and alternatively again simply a single adhesive zone or patch may be provided centrally of the package for resealing down the closure flap 10.
  • the closure structure described may be provided along a bag mouth where the package is a bag (including a pouch) as described.
  • the closure need not necessarily be provided at an end of a package but could alternatively be provided to extend longitudinally or transversely across the centre region of the package for example.
  • the closure is shown provided at the mouth of a package heat sealed at either side and transversely to form the package (a package of the type typically formed on a form, fill and seal machine by wrapping a sheet of plastics film material around a product and heat sealing longitudinally and at either end to close the package).
  • the package may be of any other form such as a package formed from tubular film stock.
  • the package may also be a gusseted package and/or a package with a block bottom.
  • a closure structure of the invention may need not necessarily be provided only across a mouth of the package but could be provided across a mouth and down either side of a flap i.e the breakable heat seal 11 be formed across a flap 11 as described and also down either side of the flap, and a resealable adhesive area provided across the mouth closed by the flap and again optionally down either side.
  • closure flap 10 closure flap 10 or equivalent
  • the closure of the invention may be formed in package and the package filled with product or product inserted into the package through another end or side of the package which is the heat sealed closed, the package then being resealably openable at the end of the package at which the resealable closure of the invention is provided.
  • An advantage of the invention is that it enables a resealable package to be formed from a material having a heat sealable surface on one side only. It is not necessary that both the inner and outer surfaces of the plasties film material must be heat sealable.
  • the plasties film material may simply be a two layer material, comprising a layer which provides the structural and/or barrier properties of the material, such as a bi-axially or oriented Nylon layer for example, and a heat sealable layer on one side only of the material.
  • the material can therefore be a lower cost material.At the same time the closure enables the package to be heat sealed closed and also subsequently resealed after initial opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

Emballage formé d’un matériau en pellicule plastique doté d’une surface thermosoudable qui est en général tournée vers l’intérieur de l’emballage. Une partie (4) du matériau en pellicule plastique est replié sur lui-même pour donner une partie exposée de ladite surface thermosoudable sur l’extérieur de l’emballage. L’emballage (4) comporte un rabat de fermeture (10) thermosoudé ou thermosoudable à ladite partie exposée (4) de la surface thermosoudable. L’emballage comporte également une zone adhésive (7) aussi sur l’extérieur de l’emballage à laquelle ledit rabat de fermeture (10) peut être collé pour refermer le rabat de fermeture (10) après rupture du thermosoudage (11) du rabat de fermeture (10) pour ouvrir l’emballage.
PCT/NZ2005/000220 2004-08-20 2005-08-19 Améliorations relatives aux emballages et fermetures refermables Ceased WO2006019324A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ534813 2004-08-20
NZ53481304A NZ534813A (fr) 2004-08-20 2004-08-20
NZ53702004 2004-12-06
NZ537020 2004-12-06

Publications (1)

Publication Number Publication Date
WO2006019324A1 true WO2006019324A1 (fr) 2006-02-23

Family

ID=35907663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2005/000220 Ceased WO2006019324A1 (fr) 2004-08-20 2005-08-19 Améliorations relatives aux emballages et fermetures refermables

Country Status (1)

Country Link
WO (1) WO2006019324A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008063750A3 (fr) * 2006-11-20 2008-07-10 From The Source Llc Article pour transporter de manière sûre des bouteilles de vin et de spiritueux en verre, et analogues
WO2012023862A1 (fr) * 2010-10-28 2012-02-23 Technopak Limited Emballage
USD656410S1 (en) 2007-08-24 2012-03-27 From The Source, Llc Bottle wrapper
WO2025003576A1 (fr) * 2023-06-30 2025-01-02 Creamill Oy Emballage souple de matériau fibreux doté d'un rabat et son procédé de fabrication

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786190A (en) * 1986-08-11 1988-11-22 Minigrip, Inc. Reclosable package having outer reclosable closure and inner non-reclosable closure
US4826011A (en) * 1985-09-27 1989-05-02 Folienwalzwerk Bruder Teich Ag Pack for packaging a material in the form of pieces
WO1991015406A1 (fr) * 1990-04-11 1991-10-17 Lawson Mardon Group Uk Limited Sac de securite scelle par adhesif de caoutchouc au silicone
US6076969A (en) * 1998-12-01 2000-06-20 Sonoco Development, Inc. Resealable closure and method of making same
WO2001010736A1 (fr) * 1999-08-10 2001-02-15 Campina Melkunie B.V. - Divisie Kaas Emballage pour fromage pouvant etre referme
US20040136616A1 (en) * 2003-01-14 2004-07-15 Allen John R. Tamper evident multi-wall packaging and associated methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826011A (en) * 1985-09-27 1989-05-02 Folienwalzwerk Bruder Teich Ag Pack for packaging a material in the form of pieces
US4786190A (en) * 1986-08-11 1988-11-22 Minigrip, Inc. Reclosable package having outer reclosable closure and inner non-reclosable closure
WO1991015406A1 (fr) * 1990-04-11 1991-10-17 Lawson Mardon Group Uk Limited Sac de securite scelle par adhesif de caoutchouc au silicone
US6076969A (en) * 1998-12-01 2000-06-20 Sonoco Development, Inc. Resealable closure and method of making same
WO2001010736A1 (fr) * 1999-08-10 2001-02-15 Campina Melkunie B.V. - Divisie Kaas Emballage pour fromage pouvant etre referme
US20040136616A1 (en) * 2003-01-14 2004-07-15 Allen John R. Tamper evident multi-wall packaging and associated methods

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008063750A3 (fr) * 2006-11-20 2008-07-10 From The Source Llc Article pour transporter de manière sûre des bouteilles de vin et de spiritueux en verre, et analogues
USD656410S1 (en) 2007-08-24 2012-03-27 From The Source, Llc Bottle wrapper
CN103384630A (zh) * 2010-08-20 2013-11-06 泰克诺帕克有限公司 包装
US10647456B2 (en) 2010-08-20 2020-05-12 Technopak Limited Packaging
WO2012023862A1 (fr) * 2010-10-28 2012-02-23 Technopak Limited Emballage
WO2025003576A1 (fr) * 2023-06-30 2025-01-02 Creamill Oy Emballage souple de matériau fibreux doté d'un rabat et son procédé de fabrication

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