EP0827912A2 - Wiederverschliessbare Verpackung - Google Patents

Wiederverschliessbare Verpackung Download PDF

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Publication number
EP0827912A2
EP0827912A2 EP19970305875 EP97305875A EP0827912A2 EP 0827912 A2 EP0827912 A2 EP 0827912A2 EP 19970305875 EP19970305875 EP 19970305875 EP 97305875 A EP97305875 A EP 97305875A EP 0827912 A2 EP0827912 A2 EP 0827912A2
Authority
EP
European Patent Office
Prior art keywords
package
flap
panel
adhesive
strip
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Withdrawn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
EP19970305875
Other languages
English (en)
French (fr)
Inventor
Timothy J. Helmer
Douglas J. Overby
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.)
Fres Co System Usa Inc
Original Assignee
Fres Co System Usa Inc
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 Fres Co System Usa Inc filed Critical Fres Co System Usa Inc
Publication of EP0827912A2 publication Critical patent/EP0827912A2/de
Withdrawn legal-status Critical Current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
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1691—End- or aperture-closing arrangements or devices using adhesive applied to attached closure elements

Definitions

  • This invention relates to packages, and more particularly to flexible packages for holding products under vacuum therein, and which are arranged to be repeatedly re-opened and resealed, while keeping the contents fresh.
  • gussetted package One common type of flexible package is the so-called "gussetted" package or bag.
  • a package has walls formed from a web of flexible stock material, e.g. polyethylene, polyester, polypropylene, metal foil, and combinations thereof in single or multiple plies, into a body, having a face panel, a back panel and a pair of gussetted sides.
  • Each gussetted side is formed by a pair of gusset sections and a central fold edge between a pair of outer fold edges.
  • the lower end of the bag is permanently sealed, e.g. heat sealed, along a line extending across the width of the bag close to its bottom edge.
  • the top of the bag is sealed across the entire width of the bag in a number of ways to maintain the contents under vacuum until the bag is opened.
  • the top seal is made peelable by modifying the sealant layer with a peelable coating or incompatible additive.
  • US-A-4,705,174 discloses a package which includes a peel strip secured to the inner surface of the package below the top edges. The strip is an airtight interfacial seal which can be readily peeled apart to provide access to the interior of the package.
  • Fres-Co System USA, Inc. has provided a package for holding particulate chemicals, e.g. a crystalline catalyst, which included a band of an adhesive transfer on a portion of its exterior surface substantially below the mouth.
  • the package was arranged so that the top edge portion forming the mouth could be folded over to form a flap and to bring the flap into engagement with the band of the adhesive transfer to hold the flap in place.
  • a paper liner or cover strip was releasably secured over the band of the adhesive transfer. Once that package was opened and a portion of its contents removed the cover sheet or strip was peeled off the band of the adhesive transfer to expose it.
  • the top portion of the package was then folded over itself to form a flap and the flap brought into engagement with the exposed band of the adhesive transfer to hold the flap in place.
  • this package has proved generally suitable for its intended purposes, it has shortcomings.
  • the package is to hold a substantial weight (e.g. 25 Kg. or more) of material, and a plurality of such packages are stacked on one another vertically, with the plane of the abutting surfaces forming the peelable mouth of each package being horizontal
  • the pressure on a package by the weight contents by the weight of the package(s) stacked thereon may cause the peelable seal at the mouth of the package to rupture or peel apart, thereby enabling the contents to spill out.
  • the stress of shipping and/or distribution can result in the peelable mouth accidentally opening.
  • a package comprising a front wall, a rear wall and sides, the upper portions of which form a mouth sealed by peelable closure means, the upper portions of the package being folded to form a flap characterised in that a second seal is present beyond the peelable closure means and in that an adhesive surface covered by a release sheet extends substantially across the width of one wall.
  • a flexible package of the invention comprises a gussetted bag 20 adapted to hold under vacuum any material, e.g. coffee beans, ground coffee, chemicals and the like for dispensing, e.g. pouring, therefrom.
  • the bag or package 20 is formed of a web of any suitable, flexible material in a manner to be described hereinafter.
  • the package 20 comprises a front wall or panel 24, a rear wall or panel 26, a pair of gussetted sides 28, a top end portion 30 and a bottom end portion 32.
  • the top end portion 30 of the package terminates in a top marginal edge 34 ( Figures 1 to 4).
  • the bottom end portion 32 of the package terminates in a bottom marginal edge 36.
  • the package has a vertical seamed fin 38.
  • a one-way venting valve may be included in any suitable portion of the package to enable gases which may be produced by the material(s), e.g. coffee, contained within the sealed package to vent to the ambient air without air gaining ingress to the interior of the package.
  • the front panel 24, rear panel 26, and the two gussetted sides 28 of the package are all integral portions of a single sheet or web of the flexible material, of single or multiple ply or layers, which has been folded and seamed to form a tubular body.
  • One particularly useful laminated web is commercially available from Fres-Co System USA, Inc. of Telford PA, United States of America. That material comprises a 48 gauge polyester layer, ink, an adhesive layer, a 28 gauge aluminium foil layer, another adhesive layer, and a 600 gauge easy open sealant layer. When a web of such material is formed into the tubular body for the package the polyester layer serves as the outer surface of the package, with the easy-open sealant layer being the inner surface of the package.
  • the mouth of the bag 20 is internally hermetically sealed along a transverse, peelable seal line 40 after the bag has been filled and vacuum sealed.
  • the seal line 40 is formed in a conventional manner and extends across the width of the bag 20 slightly below the top edge 34 and the seal includes the gussetted sides.
  • the peelable seal line 40 is formed by heat sealing of the abutting easy-open sealant layer portions forming the inner surface of the bag 20.
  • the seal line 40 can be formed by any other conventional manner.
  • the lower or bottom end 32 of the bag is sealed closed along a transverse, permanent seam line close to the bottom edge 36, as is the vertical seamed fin 38.
  • the top portion 30 of the package is folded along a fold line 12A to form a flap 12, Figure 1.
  • the flap 12 is held in place by an elongate bead of adhesive 42 (Figure 3), e.g. a hot-melt adhesive between the abutting surfaces.
  • Figure 3 the hot-melt adhesive 42 is interposed between the outer surface of the rear panel 26 between its top edge 34 and the fold line 12A (i.e. the portion forming rear surface of the flap 12) and the outer surface of the rear panel immediately below the fold line 12A.
  • the bead 42 was applied to the outer surface of the panel 26.
  • the folded-over flap reinforces the peelable seal 40 to prevent it from accidentally peeling apart even when pressure is applied to the package (as may occur during the stacking of plural packages or during rough handling).
  • a strip of double sided adhesive tape 44 is secured to the front panel between the top marginal edge 34 and the fold line 12A.
  • the tape 44 extends for a substantial width of the front panel 24 and includes an inner surface 44A secured to the underlying surface portion of the front panel 24.
  • a release sheet, i.e. a cover or liner strip 46 is releasably secured to the outer surface 44B of the tape strip 44.
  • the adhesive tape is a two-sided adhesive film preferably that sold by Minnesota Mining & Manufacturing Company (3M) under the product designation "3M Double Coated Film Tape #476L".
  • the liner or cover strip 46 is paper.
  • a strip of adhesive tape 14 is used to hold the flap 12 to the panel 26, as shown in Figure 3, the tape 44 thus being shielded within a pocket.
  • the tape 14 is removed and the free edge of the flap 12 is grasped and pulled outward away from the plane of the portion of the package to which the flap is secured by adhesive 42.
  • This action breaks the adhesive bead 42 at the interface with the underlying portion of the package, whereupon the flap can be unfolded to the condition shown in Figure 4.
  • the top marginal edges 34 of the front and rear panels of the package can then be grasped and pulled apart in the direction of the arrows in Figure 4 to peel open the peelable seal line 40, and thereby open the mouth 41 of the package as shown in Figure 2.
  • the contents of the package can then be poured through the open mouth 41.
  • the package 20 is closed again by refolding the top portion along the fold line 12A to reform the flap 12.
  • the inner strip 46 is removed from the tape strip 44, exposing the adhesive outer surface 44B of that strip.
  • the upper portion of the package from the fold line 12A to the marginal edge of the package, i.e. the portion of the package forming the flap 12, is then folded over itself so that the exposed adhesive surface 44B of the strip engages the rear panel 26 of the package, to releasably secure the folded over portion in place as shown in Figure 5.
  • the package is reopened by pulling on the double folded portion of the package to break the adhesion of the tape 44, whereupon the flap 12 can be unfolded and the mouth 41 reopened.
  • the package may be reopened repeatedly so long as the adhesive outer surface 44B of the tape 44 remains relatively uncontaminated so that it still exhibits adhesive properties. To ensure such action the liner strip 46 (if retained) can be reapplied to the outer surface 44B of the tape strip 44.
  • the package 22 of Figure 6 is considerably larger than package 20 and is suitable for packaging of large quantities of particulate materials, e.g. agricultural chemical, dry pet foods, etc.
  • the adhesive means for reclosing the package 22 is located on a portion of the package not forming the flap 12. (The same reference numerals will be used to describe this embodiment, where convenient.)
  • the package 22 includes a pair of peelable seal lines 40A above a sealable line 40B.
  • the adhesive strip for reclosing the mouth of the bag 22 is similar to the strip 40 of package 20, but it is larger, i.e. it is a wide strip 44 1 , having an inner surface secured to the rear panel 26 of the bag below the edge 34 of the folded flap 12.
  • the strip 44 1 extends substantially the full width of the rear panel 26 and includes an outer surface which is initially covered by a liner or cover strip 46 1 .
  • Initial opening of the package 22 is similar to that of package 20 except that there is no tape strip 14 to remove.
  • the mouth of the bag 22 can be pulled open (peeled apart) by pulling on the upper edges of the front and rear panels of the bag in the direction of the arrows in Figure 9.
  • the action breaks in succession the peelable seal lines 40A and 40B.
  • the package 22 is reclosed by refolding the top portion of the package 22 along the fold line 12A to reform the flap 12.
  • the liner strip 46 1 is removed from the tape strip 44 1 on the rear panel, exposing the adhesive outer surface of that strip.
  • the upper portion of the package from the fold line 12A to the marginal edge 34 of the package, i.e. the portion of the package from the flap 12, is then folded over itself and engaged with the exposed adhesive surface of the strip 44 1 on the rear panel 26 of the package 22.
  • the package 22 can readily be opened again by pulling on the double folded portion of the package to break the adhesion of the interposed tape 44 1 , whereupon the flap 12 can be unfolded and the mouth opened.
  • a package or bag of the invention is resistant to premature or accidental opening.
  • the bag may however be opened when required by pulling side panels apart, i.e. a knife or scissors are not needed.
  • the invention is not limited to the embodiment shown.
  • the package may be of any cross sectional shape, and of any size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP19970305875 1996-09-06 1997-08-04 Wiederverschliessbare Verpackung Withdrawn EP0827912A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71133296A 1996-09-06 1996-09-06
US711332 1996-09-06

Publications (1)

Publication Number Publication Date
EP0827912A2 true EP0827912A2 (de) 1998-03-11

Family

ID=24857667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970305875 Withdrawn EP0827912A2 (de) 1996-09-06 1997-08-04 Wiederverschliessbare Verpackung

Country Status (2)

Country Link
EP (1) EP0827912A2 (de)
CA (1) CA2214738A1 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829997A1 (fr) * 2001-09-26 2003-03-28 Jpj Internat Dispositif de fermeture de sac
EP1016598B1 (de) * 1998-12-01 2003-08-06 Sonoco Development, Inc. Verpackung mit wiederverschliessbarem Verschluss
GB2388583A (en) * 2002-04-24 2003-11-19 Simpac Ltd Re-sealable closure of bag
FR2847234A1 (fr) * 2002-11-18 2004-05-21 Cetec Ind Conditionnement Sac a ouverture rapide et fermeture repositionnable
WO2005028325A1 (en) * 2003-09-24 2005-03-31 Monica Svensson Packing for openable enclosing of material
NL1025987C2 (nl) * 2004-04-20 2005-10-24 Robert Bosch Verpakkingsmachin Inrichting, samenstel en werkwijze voor het vervaardigen van zakken alsmede een dergelijke zak.
WO2008058418A1 (de) * 2006-11-16 2008-05-22 Zip Pack Ip Ag Widerverchliessbarer sack mit garantiesicherung
EP1982927A1 (de) * 2003-10-03 2008-10-22 NEW MADAPLAST S.r.l. Vakuumbeutel mit einer Öffnung
US20090263048A1 (en) * 2008-04-16 2009-10-22 Iannelli Ii Michael Louis Bag Structures And Methods Of Assembling The Same
WO2010081315A1 (zh) * 2009-01-14 2010-07-22 Chen Ping 具有扎紧带的垃圾容纳袋的生产方法及具有扎紧带的垃圾容纳袋
GB2523391A (en) * 2014-02-24 2015-08-26 Essentra Packaging & Security Ltd Packaging method and apparatus
EP3023242A1 (de) * 2014-11-21 2016-05-25 PETROPLAST GmbH Chemikalien und Kunststoffe Verpackungsfolie sowie Vorrichtung und Verfahren zur Herstellung einer solchen
EP3326804A1 (de) * 2016-11-23 2018-05-30 PETROPLAST GmbH Chemikalien und Kunststoffe Verpackungsfolie sowie vorrichtung und verfahren zur herstellung einer solchen
CN110589204A (zh) * 2019-10-15 2019-12-20 东莞职业技术学院 一种天然植物纤维制造的高保鲜度生鲜食物包装袋

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1016598B1 (de) * 1998-12-01 2003-08-06 Sonoco Development, Inc. Verpackung mit wiederverschliessbarem Verschluss
FR2829997A1 (fr) * 2001-09-26 2003-03-28 Jpj Internat Dispositif de fermeture de sac
EP1298068A2 (de) * 2001-09-26 2003-04-02 Jpj International Beutelverschliessvorrichtung
EP1298068A3 (de) * 2001-09-26 2004-08-11 Jpj International Beutelverschliessvorrichtung
GB2388583A (en) * 2002-04-24 2003-11-19 Simpac Ltd Re-sealable closure of bag
FR2847234A1 (fr) * 2002-11-18 2004-05-21 Cetec Ind Conditionnement Sac a ouverture rapide et fermeture repositionnable
WO2005028325A1 (en) * 2003-09-24 2005-03-31 Monica Svensson Packing for openable enclosing of material
EP1982927A1 (de) * 2003-10-03 2008-10-22 NEW MADAPLAST S.r.l. Vakuumbeutel mit einer Öffnung
EP1588949A1 (de) * 2004-04-20 2005-10-26 Robert Bosch Verpakkingsmachines B.V. Vorrichtung und Verfahren zum Herstellen von Beuteln und damit erzeugter Beutel
NL1025987C2 (nl) * 2004-04-20 2005-10-24 Robert Bosch Verpakkingsmachin Inrichting, samenstel en werkwijze voor het vervaardigen van zakken alsmede een dergelijke zak.
WO2008058418A1 (de) * 2006-11-16 2008-05-22 Zip Pack Ip Ag Widerverchliessbarer sack mit garantiesicherung
US20090263048A1 (en) * 2008-04-16 2009-10-22 Iannelli Ii Michael Louis Bag Structures And Methods Of Assembling The Same
WO2010081315A1 (zh) * 2009-01-14 2010-07-22 Chen Ping 具有扎紧带的垃圾容纳袋的生产方法及具有扎紧带的垃圾容纳袋
GB2523391A (en) * 2014-02-24 2015-08-26 Essentra Packaging & Security Ltd Packaging method and apparatus
EP3023242A1 (de) * 2014-11-21 2016-05-25 PETROPLAST GmbH Chemikalien und Kunststoffe Verpackungsfolie sowie Vorrichtung und Verfahren zur Herstellung einer solchen
EP3326804A1 (de) * 2016-11-23 2018-05-30 PETROPLAST GmbH Chemikalien und Kunststoffe Verpackungsfolie sowie vorrichtung und verfahren zur herstellung einer solchen
CN110589204A (zh) * 2019-10-15 2019-12-20 东莞职业技术学院 一种天然植物纤维制造的高保鲜度生鲜食物包装袋

Also Published As

Publication number Publication date
CA2214738A1 (en) 1998-03-06

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