EP1077186A1 - Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung - Google Patents

Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung Download PDF

Info

Publication number: EP1077186A1
Authority: EP; European Patent Office
Prior art keywords: layer; packaging; lines; weakening; weldable
Prior art date: 1999-08-17
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

EP00402289A

Other languages

English (en)

French (fr)

Other versions

EP1077186B8 (de

EP1077186B1 (de

Inventor

Jacques Hauchecorne

Uwe Obermann

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 France SAS

Original Assignee

Danisco Flexible France

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.)

1999-08-17

Filing date

2000-08-14

Publication date

2001-02-21

2000-08-14 Application filed by Danisco Flexible France filed Critical Danisco Flexible France

2001-02-21 Publication of EP1077186A1 publication Critical patent/EP1077186A1/de

2005-04-13 Application granted granted Critical

2005-04-13 Publication of EP1077186B1 publication Critical patent/EP1077186B1/de

2005-06-08 Publication of EP1077186B8 publication Critical patent/EP1077186B8/de

2020-08-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
- B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
- B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
- 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
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2025—Multi-layered container, e.g. laminated, coated
- B65D2577/2033—Multi-layered container, e.g. laminated, coated with one or more layers of container being torn off upon initial opening
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2075—Lines of weakness or apertures
- B65D2577/2091—Lines of weakness or apertures in cover

Definitions

the present invention relates to a laminated packaging sheet, type comprising a primary layer associated with a weldable layer between which is interposed, in at least one marked area, a layer of permanent adhesive.
the invention further relates to a packaging comprising a wall external delimiting a housing provided with an access passage to said housing comprising such a packaging sheet.
Packages with a packaging sheet allowing easy opening and reclosing are currently used, for example, for packaging food products.
the structure of such leaves is described in particular in patent application FR-A-95-14117.
the laminated sheet used to allow the opening and the reclosure of the packaging has two layers of polymer between which a layer of permanent adhesive is interposed.
One of layers called “weldable or weldable layer” is intended to be oriented towards the inside of the package. It is suitable to be welded on the edge peripheral of a tray.
the other layer called the “support layer”, is intended to form the external face of the packaging, this layer possibly being printed.
the welding layer tears on either side of the welded region. After opening of the tray, there remains on the periphery thereof residual welded, consisting of the welded part of the welding layer.
the opening of the tray being obtained by rupture of the layer weldable, it should be chosen so that it has characteristics of rupture compatible with the conditions of use of the packaging.
the welding layer should be able to be torn manually, without the need to exert too much tensile force important on the packaging sheet. So the welding layers used are rather of reduced thickness.
the weldable layer should also have good welding characteristics to ensure a reliable bond of the packaging sheet on the tray.
the layer must be welding is compatible with the permanent adhesive interposed between the two leaf layers. To meet this condition, choose a rather thick layer.
the invention aims to provide a packaging sheet for opening and reopening of a package, the sealing layer of which can be chosen from a wide range.
the subject of the invention is a laminated packaging sheet, of the aforementioned type, characterized in that, in an identified area of the sheet where the permanent adhesive is present, the weldable layer comprises, on the one hand and other than a region to be welded, at least one weakening line of the weldable layer favoring its rupture along said lines.
the invention further relates to a packaging comprising a wall external delimiting a housing provided with an access passage to said housing, characterized in that said passage is closed by a laminated sheet according to any one of the preceding claims, which sheet is welded on said outer wall at the periphery of the passage following its weldable layer in a region demarcated essentially between the lines of weakness.
the package 10, shown in Figure 1 consists of a tray rectangular 12 and a flexible cover 14 for closing a passage access 16 inside the tray.
the tray 12 consists for example of a support layer outer material suitable, for example polyvinyl chloride covered on its inner surface with a weldable layer, for example, polyethylene.
the tray defines a receptacle 18 bordered around its entire periphery rim 20 delimiting a flat welding surface of the cover 14, according to straight welding 22.
the cover 14 is laminated, that is to say made of several layers superimposed. For reasons of clarity, the thickness of the layers is excessively augmented in the figures.
the cover 14 essentially consists of a support layer 24 and a weldable layer 26 with a layer of permanent adhesive 28 interposed flat between them over the entire surface.
the support layer 24 advantageously includes prints on its outer face. It can also include a transparent layer bearing such laminated prints on the outer surface of the diaper support by means of a layer of glue applied on its face printed.
the support layer 24 is, for example, a polyethylene layer 36 ⁇ m thick.
the layer of permanent adhesive 28 is produced by coating using an adhesive mass initially in solution, especially in dispersion aqueous. It can also be applied hot, in particular by extrusion.
a permanent adhesive commonly referred to as “hot melt” is ideal for this application. It is possible in particular to use Plastoflex 87.18 marketed by the company Paramelt in Netherlands.
the thickness of the adhesive layer 28 is advantageously included between 10 and 30 ⁇ m and is in particular equal to around 20 ⁇ m.
the weldable layer 26 is for example a polyethylene layer or polypropylene whose thickness is between 20 and 60 ⁇ m, and is in particular advantageously equal to 40 ⁇ m. This layer is made in a material allowing welding with the layer facing the tray 12.
the peripheral weld bead 22 extends over the four sides of the rim 20 of the rectangular tray. he provides watertight sealing of the tray. For reasons of clarity, the peripheral weld 22 has been grayed out in FIG. 2.
the weldable layer 26 has two lines of weakness 30A, 30B extending parallel to each other.
a welded straight region 22A of the peripheral weld which extends along the length of a rim 20 of the tray is bordered by these two lines 30A, 30B.
the weakening lines 30A, 30B each consist of a pre-cut line formed by a continuous groove or notch opening on the face of the sealable layer which is oriented towards the tray, thus as shown in Figure 2.
the depth of the groove is between 25 and 100% of the thickness of the weldable layer 26. It is preferably substantially equal to 50% of the thickness of the weldable layer.
the welded region 22A advantageously extends over the entire width denoted i of the band delimited by the weakening lines 30A and 30B.
the width i is such that the weakening lines are outside of the welded region 22A.
the weakening lines 30A and 30B are advantageously made in the weldable layer while the packaging sheets are still assembled to form a continuous strip adjacent packaging sheets.
the weakening lines 30A, 30B are arranged in the machine direction, i.e. the direction of flow of the strip formed from the adjacent sheets. These lines therefore extend parallel to the longitudinal edge of the strip.
the weakening lines 30A, 30B consisting of continuous grooves are made before placing the sheet forming the cover on the tray. They are for example produced by continuous cutting at using a laser beam when the strip runs. Alternatively, the lines of weakening are carried out by cutting with a knife. In the latter solution, during the circulation of the strip, of the rotary cutting members are brought into contact with the free surface of the weldable layer 26, in order to cut it to a determined depth corresponding to the desired depth for grooves 30A, 30B.
the peripheral weld 22 is obtained by heat sealing. During the welding, the weldable inner layer of the tray and the weldable layer 26 of the packaging sheet melt together, making it possible to obtain, after cooling, a very reliable weld.
the presence of the permanent adhesive 28 on a welded bead and / or the facing surface of the support layer 24 allows the subsequent closing of the packaging by replacing the cover 14.
the presence of the weakening lines 30A, 30B promotes the opening of the tray by pulling on the cover 14.
the initial thickness and tear strength of the weldable layer 26 it is possible to determine the depth of the grooves forming the weakening lines so that these allow a manual tearing of the weldable layer 26 by simple pulling on cover 14.
the characteristics of the weldable layer 26 can be determined depending on welding constraints, compatibility with permanent adhesive or any other constraint related to the protection of packaged products, without it being necessary to take account of the characteristics tear needed to open the package.
the tearability of the weldable layer 26 is determined by the nature of the weakening lines.
Figure 4 is shown an alternative embodiment of a tray according to the invention.
the weakening lines 30A and 30B are spaced apart by an interval l greater than the width, denoted i, of the welds 42 practiced along the other three sides of the tray.
the fourth welding, noted 44, of the lid on the tray is carried out according to any the extent delimited between the weakening lines 30A and 30B. So the weld 44 has a greater width, and in particular advantageously included between double and quadruple the thickness of the other welds 42.
Figure 5 is shown an alternative embodiment of a sheet packaging according to the invention welded to the rim of a tray, noted 52.
the weldable layer 26 includes on either side of the weld 22 two weakening lines 56A, 56B and 58A, 58B.
the weakening lines are formed by continuous grooves leading to the layer of permanent adhesive 28.
the packaging shown in Figures 6 and 7 forms a packaging bag.
This consists of a folded packaging sheet according to the invention on itself welded laterally on both sides and whose two ends are joined to each other by welding, with overlap. More specifically, a weld 100 is made between the free surface of the support sheet 24 and the free surface facing the weldable layer 26.
the sealing of the sachet is of the leather against flesh type.
the welding is carried out between weakening lines 30A, 30B initially formed in the sheet on either side of the region to be welded.
the weakening lines are arranged according to the machine direction, i.e. the direction of tape unwinding on the machine manufacturing bags.
This direction of development also corresponds in the direction of travel of the strip during the manufacture of the bags.
the weakening can be easily carried out continuously.
the weldable layer 26 can be chosen with characteristics appropriate to the type of packaging desired, regardless of its breaking characteristics. Indeed, the presence of weakening lines allows, whatever the characteristics of the layer, to ensure that it can be torn manually along the lines of weakness.
the permanent adhesive extends over the entire surface of the weldable layer.
the permanent adhesive may not be placed between the support layer 24 and the weldable layer 26 that in the identified areas, the sealing weld packaging then being carried out in at least one of these zones marked with permanent adhesive between lines of weakness previously arranged.
the sheet can be manufactured by laminating and laminating. It can also be manufactured by co-extension overlapping layers.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Packages (AREA)
Wrappers (AREA)
Laminated Bodies (AREA)
Packaging For Recording Disks (AREA)

EP00402289A 1999-08-17 2000-08-14 Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung Expired - Lifetime EP1077186B8 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR9910565		1999-08-17
FR9910565A FR2797622B1 (fr)	1999-08-17	1999-08-17	Feuille d'emballage stratifiee permettant la refermeture et emballage la comportant

Publications (3)

Publication Number	Publication Date
EP1077186A1 true EP1077186A1 (de)	2001-02-21
EP1077186B1 EP1077186B1 (de)	2005-04-13
EP1077186B8 EP1077186B8 (de)	2005-06-08

Family

ID=9549193

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00402289A Expired - Lifetime EP1077186B8 (de)	1999-08-17	2000-08-14	Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung

Country Status (7)

Country	Link
EP (1)	EP1077186B8 (de)
AT (1)	ATE293071T1 (de)
DE (1)	DE60019380T2 (de)
DK (1)	DK1077186T3 (de)
ES (1)	ES2240030T3 (de)
FR (1)	FR2797622B1 (de)
PT (1)	PT1077186E (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1227048A1 (de) *	2001-01-26	2002-07-31	Japan Patent Management Co. Ltd.	Récipient étanche tubulaire facilement ouvrable
FR2889689A1 (fr) *	2005-08-12	2007-02-16	Socoplan Soc Par Actions Simpl	Dispositif de conditionnement et de distribution d'un echantillon de produit fluide totalement hermetique et etanche au fluide
EP2111982A1 (de)	2008-04-25	2009-10-28	Amcor Flexibles Transpac N.V.	Verfahren zur Herstellung eines dünnen Polymerfilms
EP2154082A1 (de)	2004-12-23	2010-02-17	Wipak Walsrode GmbH & Co. KG	Wiederverschließbare Verpackung
EP2716566A1 (de)	2012-10-08	2014-04-09	Amcor Flexibles	Wiederverschließbares Flowpack
WO2014150125A3 (en) *	2013-03-15	2014-12-04	Intercontinental Great Brands Llc	Reclosable packages
RU2608284C2 (ru) *	2010-03-31	2017-01-17	Авери Деннисон Корпорейшн	Повторно герметизируемый многослойный материал для термогерметизируемой упаковки
US10710773B2 (en)	2009-09-11	2020-07-14	Avery Dennison Corporation	Resealable laminate for heat sealed packaging
US11352172B2 (en)	2009-09-11	2022-06-07	Avery Dennison Corporation	Resealable laminate for heat sealed packaging

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2016159928A1 (en)	2015-03-27	2016-10-06	Bemis Company, Inc.	Flexible peelable/ resealable package
US11465810B2 (en)	2017-05-08	2022-10-11	Bemis Company, Inc.	Package having peel reseal feature

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0305976A2 (de) *	1987-08-31	1989-03-08	Sumitomo Bakelite Company Limited	Leicht zu öffnender versiegelter Behälter
US5002223A (en) *	1989-01-19	1991-03-26	Firma Schmalbach-Lubeca Ag	Easy-open package with outwardly projecting open tab
US5353943A (en) *	1993-03-15	1994-10-11	Sonoco Products Company	Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
EP0836936A1 (de) *	1996-02-09	1998-04-22	Dai Nippon Printing Co., Ltd.	Laminierter körper, deckel und ein sackartikel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2741605B1 (fr) *	1995-11-29	1998-01-16	Soplaril Sa	Structure d'obturation pour un contenant, contenant muni de cette structure et procede d'obturation du contenant

1999
- 1999-08-17 FR FR9910565A patent/FR2797622B1/fr not_active Expired - Fee Related
2000
- 2000-08-14 DE DE60019380T patent/DE60019380T2/de not_active Expired - Lifetime
- 2000-08-14 DK DK00402289T patent/DK1077186T3/da active
- 2000-08-14 AT AT00402289T patent/ATE293071T1/de active
- 2000-08-14 PT PT00402289T patent/PT1077186E/pt unknown
- 2000-08-14 ES ES00402289T patent/ES2240030T3/es not_active Expired - Lifetime
- 2000-08-14 EP EP00402289A patent/EP1077186B8/de not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0305976A2 (de) *	1987-08-31	1989-03-08	Sumitomo Bakelite Company Limited	Leicht zu öffnender versiegelter Behälter
US5002223A (en) *	1989-01-19	1991-03-26	Firma Schmalbach-Lubeca Ag	Easy-open package with outwardly projecting open tab
US5353943A (en) *	1993-03-15	1994-10-11	Sonoco Products Company	Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
EP0836936A1 (de) *	1996-02-09	1998-04-22	Dai Nippon Printing Co., Ltd.	Laminierter körper, deckel und ein sackartikel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP1227048A1 (de) *	2001-01-26	2002-07-31	Japan Patent Management Co. Ltd.	Récipient étanche tubulaire facilement ouvrable
EP2154082A1 (de)	2004-12-23	2010-02-17	Wipak Walsrode GmbH & Co. KG	Wiederverschließbare Verpackung
FR2889689A1 (fr) *	2005-08-12	2007-02-16	Socoplan Soc Par Actions Simpl	Dispositif de conditionnement et de distribution d'un echantillon de produit fluide totalement hermetique et etanche au fluide
EP2111982A1 (de)	2008-04-25	2009-10-28	Amcor Flexibles Transpac N.V.	Verfahren zur Herstellung eines dünnen Polymerfilms
US10710773B2 (en)	2009-09-11	2020-07-14	Avery Dennison Corporation	Resealable laminate for heat sealed packaging
US11352172B2 (en)	2009-09-11	2022-06-07	Avery Dennison Corporation	Resealable laminate for heat sealed packaging
RU2608284C2 (ru) *	2010-03-31	2017-01-17	Авери Деннисон Корпорейшн	Повторно герметизируемый многослойный материал для термогерметизируемой упаковки
EP2716566A1 (de)	2012-10-08	2014-04-09	Amcor Flexibles	Wiederverschließbares Flowpack
WO2014150125A3 (en) *	2013-03-15	2014-12-04	Intercontinental Great Brands Llc	Reclosable packages

Also Published As

Publication number	Publication date
DE60019380T2 (de)	2006-04-20
EP1077186B8 (de)	2005-06-08
DK1077186T3 (da)	2005-08-15
ATE293071T1 (de)	2005-04-15
DE60019380D1 (de)	2005-05-19
FR2797622B1 (fr)	2001-11-02
PT1077186E (pt)	2005-08-31
ES2240030T3 (es)	2005-10-16
FR2797622A1 (fr)	2001-02-23
EP1077186B1 (de)	2005-04-13

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Publication	Publication Date	Title
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FR2757835A1 (fr)	1998-07-03	Procede de fabrication d'un emballage et emballage a predecoupe laser
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FR2888571A1 (fr)	2007-01-19	Element pour la realisation d'un emballage de conditionnement d'un produit alimentaire, emballage correspondant, et ensemble comprenant un tel emballage et un produit alimentaire
CA2396791A1 (fr)	2001-07-12	Ensemble comprenant un emballage et une portion de fromage fondu
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FR2702932A1 (fr)	1994-09-30	Mouchoirs en papier et leur procédé de fabrication.
FR2797852A1 (fr)	2001-03-02	Feuille d'emballage stratifiee refermable et emballage la comportant

EP1077186A1 - Wiederverschliessbares mehrschichtige Verpackungsfolie und damit hergestellte Verpackung - Google Patents

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