EP0554152B1 - Récipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis à pouvoir adhérent permanent - Google Patents
Récipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis à pouvoir adhérent permanent Download PDFInfo
- Publication number
- EP0554152B1 EP0554152B1 EP19930400166 EP93400166A EP0554152B1 EP 0554152 B1 EP0554152 B1 EP 0554152B1 EP 19930400166 EP19930400166 EP 19930400166 EP 93400166 A EP93400166 A EP 93400166A EP 0554152 B1 EP0554152 B1 EP 0554152B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- heat
- barrier
- acting
- peripheral flange
- 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.)
- Expired - Lifetime
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Images
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
- B65D77/2068—Means for reclosing the cover after its first opening
- B65D77/2096—Adhesive means
-
- 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
Definitions
- the present invention relates to a container, in particular a pot or a tray, comprising a peripheral rim on which is fixed a cover comprising an upper sub-assembly comprising at least one layer of barrier material, as well as a lower sub-assembly connected by adhesion to the layer of barrier material and comprising a layer of heat-sealable material fixed by heat-seal on the peripheral rim, as well as a layer of varnish with permanent adhesion, interposed between the layer of barrier-forming material and the layer of heat-sealable material.
- EP-A-0 160 975 describes a container of this type which can be closed when the product which it contains has not been completely withdrawn.
- the part of the layer of heat-sealable material which is fixed to the peripheral rim of the container remains integral with the latter, while the material with permanent adhesion is exposed locally and can be used later to close the container.
- the cover is however entirely separable from the container, which has the drawback of causing a multiplication of waste and consequently increasing the pollution problems.
- the present invention proposes to provide a solution to this problem and, to do this, it relates to a container of the type indicated above, which is characterized in that the layer of varnish is applied against the part of the layer. of barrier material which overhangs the peripheral rim, with the exception of an area in which an adhesive is applied having an adhesive power greater than that of the heat-sealable material vis-à-vis the peripheral rim, in that the material layer heat sealable is applied against the varnish layer and against the of the layer of barrier material which is not covered with varnish or adhesive, and in that the adhesion strength of the heat-sealable material on the peripheral rim is greater than the adhesion strength of the varnish on the material forming a barrier so that when the container is opened, the rupture of the cover at the peripheral rim takes place either between the layer of varnish and the layer of barrier material, or between the layer of varnish and the layer of heat-sealable material, ie in the mass of the varnish.
- the present invention thus provides a simple and practical solution for effectively closing the containers provided with a lid fixed by heat sealing.
- the cover remains locally attached to the container after opening, which makes it possible to reduce pollution of the environment by avoiding that the separation into two parts of the packaging leads to an increase in the amount of waste that can be thrown away.
- the container according to the present invention is characterized in that the barrier material and the material constituting the peripheral rim are made of the same synthetic material, in that the layer of varnish with permanent adhesion is applied against the layer of barrier-forming material, except at a retaining zone which overhangs the peripheral rim, in that the layer of heat-sealable material covers the layer of varnish with permanent adhesion while the barrier-forming material is fixed against the peripheral rim at the level of the retaining zone, and in that the adhesive strength of the heat-sealable material on the peripheral rim is greater than the adhesive strength of the varnish on the barrier material so that when the container is opened, the rupture of the seal at the peripheral rim takes place either between the layer of varnish and the layer of barrier material, or between the layer of varnish and the layer of heat-sealable material, ie in the mass of the varnish.
- the barrier material entering into the constitution of the upper sub-assembly of the cover is preferably a metallic material, in particular aluminum.
- Metals and their alloys are indeed an excellent barrier against humidity and air.
- the barrier material is made of synthetic material, in particular a thermoplastic material.
- the varnish with permanent adhesive power is preferably constituted by a hot repositionable cold.
- a hot melt can in particular be based on latex-gum and have a softening point of 85 to 95 ° C and a viscosity at 175 ° C of 680 to 750 mPas. It can for example comprise a composition comprising styrene, an acrylic compound and a rubber, and form a layer having a thickness of approximately 3 to 25 g / m 2 .
- the heat-sealable material preferably comprises an acrylic vinyl compound, in particular a butylmethacrylate-methylmethacrylate copolymer and a vinyl resin which may itself comprise vinyl acetate, vinyl chloride and maleic acid.
- the layer of heat-sealable material may have a thickness of approximately 2 to 10 g / m 2 .
- FIG. 1 shows a container containing a food, medical or other product, capable of being sampled in several installments, this container being intended to be closed and stored in a place preferably refrigerated before each withdrawal of product.
- the container shown in FIG. 1 comprises, in a manner known per se, a peripheral rim 1 surrounding the entrance to its cavity and is closed in leaktight manner by a cover 2 fixed by heat-sealing on its peripheral rim. It is preferably made of plastic, but it could be made of metal provided that the upper face of its peripheral rim 1 is coated with a film of synthetic material allowing the heat sealing of its cover 2.
- the cover 2 comprises an upper sub-assembly I comprising a layer of barrier material 3, and a sub-assembly II connected by adhesion to the layer 3 and comprising a layer of heat-sealable material 4 fixed by heat-seal on the peripheral rim 1, as well as a layer of varnish with permanent adhesion 6 which is interposed between the layer of barrier material 3 and the layer of heat-sealable material 4.
- Layer 3 of the subassembly I is made of a metallic material, for example aluminum, but it could be made of a synthetic material, for example thermoplastic. It is reinforced by an outer layer 5 fixed on its upper face, this outer layer can be made of synthetic material or paper.
- the layer of varnish 6 completely covers the underside of the layer of barrier material 3 and is itself entirely covered by the layer of heat-sealable material 4.
- the layer of varnish 6 covers the part of the layer of barrier material 3 which overhangs the peripheral rim 1, with the exception of a zone 7 in which is applied an adhesive having a power greater adhesion than that of the heat-sealable material vis-à-vis the peripheral rim, making it very difficult to separate the two parts of the packaging.
- the layer of heat-sealable material 4 it is applied against the layer of varnish 6 and against the part of the layer of barrier material 3 which overhangs the inlet of the container.
- the adhesive applied in the area 7 visible in FIGS. 2 and 3 is intended to prevent the seal 2 from being able to be completely detached from the container when the latter is opened and thus to prevent multiplication of waste likely to be dispersed in nature and pollute the environment.
- the adhesive strength of the heat-sealable material on the peripheral rim 1 of the container is greater than the adhesive force of the varnish on the barrier material so that, when the container is opened, the seal 2 breaks at the peripheral rim 1 occurs either between the layer of varnish 6 and the layer of barrier material 3, or in the mass of the varnish, or between the layer of varnish 6 and the layer of heat-sealable material 4.
- the layer of varnish 6 is applied against the layer of barrier material 3, except at the level of a retaining zone 7a which corresponds to the zone 7 visible in FIGS. 2 and 3. Furthermore, the layer of heat-sealable material 4 covers the layer of varnish 6 while the barrier-forming material is fixed against the peripheral rim 1 at the level of the retaining zone 7a.
- these materials can for example be polystyrene, polypropylene or polyethylene.
- the varnish is a hot repositionable cold. It is preferably a latex-gum hot melt having a softening point of 85 to 95 ° C and a viscosity at 175 ° C of 680 to 750 mPas.
- This hot melt can for example comprise a composition comprising styrene, an acrylic compound and a rubber. It is preferably made up of the product LUNAMELT PS 3406 sold by the company H.B. FULLER.
- the heat-sealable material its nature depends on that of the container to be sealed.
- the heat-sealable material will preferably be an acrylic vinyl compound comprising a butylmethacrylate-methylmethacrylate copolymer (for example PLEXIGUM P 24 from R ⁇ HM, D-6100 Darmstadt) and a vinyl resin itself comprising a vinyl acetate, a vinyl chloride and a maleic acid (for example from VMCH of UNION CARBIDE EUROPE SA, B-2030 Antwerp).
- the proportions by weight of the copolymer and of the resin in the acrylovinyl compound can vary in the ratio from 10/1 to 4/1.
- the container to be sealed is polypropylene, it is advisable to use as an heat-sealable material an organic acrylic dispersion (for example PLEXISOL PM 555 from R ⁇ HM, D-6100 Darmstadt) which also allows good sealing on polystyrene, polychloride vinyl and polyester.
- organic acrylic dispersion for example PLEXISOL PM 555 from R ⁇ HM, D-6100 Darmstadt
- the layer of varnish 6 may have a thickness of approximately 3 to 25 g / m 2 and that the layer of heat-sealable material 4 may have a thickness of approximately 2 to 10 g / m 2 .
- the cover 2 is grasped at its periphery and one exercises on him a pull up. The cover is then torn directly below the peripheral rim 1 of the container, exposing the varnish with permanent adhesion.
- the cover 2 can be completely separated from the container.
- the cover 2 in the embodiments in accordance with the invention, which are represented respectively in FIGS. 2, 3 and in FIG. 4, the cover 2 can remain integral with the container at the level of zones 7 and 7a, the adhesive and the barrier material which are in these zones providing sufficient resistance to encourage the user not to continue its tearing effect.
- the cover 2 can advantageously be provided with a tongue (not shown in the drawings) in order to facilitate its gripping with a view to its tearing.
- the layer of varnish 6 and the layer of heat-sealable material 4 of the cover of the container according to FIG. 1 are preferably deposited by coating, as are the layers of varnish 6, the layers of heat-sealable material 4 of the covers. containers according to FIGS. 2 to 4 and the adhesive located in zone 7 of the lid of the container according to FIGS. 2 and 3.
- the peeling forces to be exerted to open the container initially are of the order of 0.3 to 0.9 dN / 15 min, the peeling forces to be exerted after reclosing being in the order of 0 , 1 to 0.3 dN / 15 min.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
- Closures For Containers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9200827A FR2686578A1 (fr) | 1992-01-27 | 1992-01-27 | Recipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis a pouvoir adherent permanent. |
FR9200827 | 1992-01-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0554152A1 EP0554152A1 (fr) | 1993-08-04 |
EP0554152B1 true EP0554152B1 (fr) | 1996-07-24 |
Family
ID=9425997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930400166 Expired - Lifetime EP0554152B1 (fr) | 1992-01-27 | 1993-01-26 | Récipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis à pouvoir adhérent permanent |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0554152B1 (ja) |
DE (1) | DE69303732T2 (ja) |
FR (1) | FR2686578A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU696059B2 (en) * | 1994-07-04 | 1998-08-27 | Barilla G. E R. F.Lli Societa Per Azioni | A label for reclosable packages |
US6302290B1 (en) | 1995-11-29 | 2001-10-16 | Atofina | Container sealing assembly |
EP1281623A1 (en) | 2001-07-31 | 2003-02-05 | Kraft Foods R&D, Inc. | Package, preferably for foodstuffs |
EP2154082A1 (de) | 2004-12-23 | 2010-02-17 | Wipak Walsrode GmbH & Co. KG | Wiederverschließbare Verpackung |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1265453B1 (it) * | 1993-12-28 | 1996-11-22 | Safta Spa | Pellicola composita per la ri-chiusura di contenitori |
FR2738226A1 (fr) * | 1995-08-29 | 1997-03-07 | Grace Sa | Emballage d'au moins un article, tel que produit alimentaire pouvant etre ouvert et referme et procede d'emballage sous vide |
BE1010387A3 (fr) * | 1996-06-26 | 1998-07-07 | Techy International Sa | Procede et materiau pour realiser un opercule scellable et refermable. |
ES2236785T3 (es) * | 1997-05-29 | 2005-07-16 | Illinois Tool Works Inc. | Cinta de cierre perfilada con una capa selladora pelable. |
EP0905048A1 (en) * | 1997-09-26 | 1999-03-31 | Cryovac, Inc. | Composite cover sheet for the re-closure of containers |
FR2782066B1 (fr) † | 1998-08-07 | 2000-11-03 | Danisco Flexible France | Feuille d'emballage stratifiee et emballage refermable la comportant |
IT1312549B1 (it) * | 1999-04-26 | 2002-04-22 | Mauro Officine Grafiche S P A | Struttura multistrato per la chiusura di contenitori, idonea allarealizzazione di contenitori richiudibili piu' volte dopo la prima |
SE9902642L (sv) * | 1999-07-08 | 2001-01-09 | Fredin Sven Inge | Material och sätt för att bilda ett lock på en förpackning |
GB2380180B (en) * | 2001-09-28 | 2005-05-11 | Redbridge Holdings Ltd | Container |
DE102005011500A1 (de) * | 2005-03-12 | 2006-09-21 | Henkel Kgaa | Wiederverschließbare Verpackung |
EP2813441A1 (de) | 2013-06-11 | 2014-12-17 | Mondi Consumer Packaging Technologies GmbH | Folienaufreißverpackung sowie Verwendung einer flexiblen, zumindest dreischichtigen Coextrusionsfolie zur Herstellung einer Folienaufreißverpackung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2294838A1 (fr) * | 1974-12-17 | 1976-07-16 | Trentesaux Toulemonde Sa | Feuille multicouche pour le thermocollage d'un recipient |
US4438850A (en) * | 1982-07-15 | 1984-03-27 | Reynolds Metals Company | Membrane closure structure |
DE3416755A1 (de) * | 1984-05-07 | 1985-11-07 | Nyffeler, Corti AG, Kirchberg | Kalt- oder heisssiegelbare mehrschichtfolie fuer wiederverschliessbare verpackungen |
FR2615488B1 (fr) * | 1987-05-20 | 1990-05-18 | Aluminium Societe Alsacienne | Opercule pour la fermeture d'un recipient comprenant une zone de scellage en matiere thermoplastique, et procede pour la fabrication de cet opercule |
FR2669607B1 (fr) * | 1990-11-26 | 1995-05-12 | Torterotot | Couvercle souple de securite refermable. |
-
1992
- 1992-01-27 FR FR9200827A patent/FR2686578A1/fr active Granted
-
1993
- 1993-01-26 DE DE1993603732 patent/DE69303732T2/de not_active Expired - Fee Related
- 1993-01-26 EP EP19930400166 patent/EP0554152B1/fr not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU696059B2 (en) * | 1994-07-04 | 1998-08-27 | Barilla G. E R. F.Lli Societa Per Azioni | A label for reclosable packages |
US6302290B1 (en) | 1995-11-29 | 2001-10-16 | Atofina | Container sealing assembly |
EP1281623A1 (en) | 2001-07-31 | 2003-02-05 | Kraft Foods R&D, Inc. | Package, preferably for foodstuffs |
EP2154082A1 (de) | 2004-12-23 | 2010-02-17 | Wipak Walsrode GmbH & Co. KG | Wiederverschließbare Verpackung |
Also Published As
Publication number | Publication date |
---|---|
DE69303732D1 (de) | 1996-08-29 |
FR2686578B1 (ja) | 1995-05-05 |
DE69303732T2 (de) | 1997-02-20 |
FR2686578A1 (fr) | 1993-07-30 |
EP0554152A1 (fr) | 1993-08-04 |
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