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1. WO2013000719 - PEELABLE FILM

Publication Number WO/2013/000719
Publication Date 03.01.2013
International Application No. PCT/EP2012/061272
International Filing Date 14.06.2012
IPC
B32B 7/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
7Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
04Interconnection of layers
06permitting easy separation
B65D 17/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
DCONTAINERS 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
17Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
CPC
B29C 48/23
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
16Articles comprising two or more components, e.g. co-extruded layers
18the components being layers
23with means for avoiding adhesion of the layers, e.g. for forming peelable layers
B32B 2250/24
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
24All layers being polymeric
B32B 2250/40
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
B32B 2307/702
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
70Other properties
702Amorphous
B32B 2435/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2435Closures, end caps, stoppers
02for containers
B32B 2439/40
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2439Containers; Receptacles
40Closed containers
Applicants
  • AMCOR FLEXIBLES TRANSPAC NV [BE]/[BE] (AllExceptUS)
  • MALFAIT, Tony [BE]/[BE] (UsOnly)
  • PEREZ MORENO, Anna [ES]/[ES] (UsOnly)
  • OURIEVA, Galina [BE]/[BE] (UsOnly)
Inventors
  • MALFAIT, Tony
  • PEREZ MORENO, Anna
  • OURIEVA, Galina
Agents
  • ASSOCIATION OF REPRESENTATIVES "PRONOVEM"
Priority Data
11172212.030.06.2011EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PEELABLE FILM
(FR) PELLICULE DÉCOLLABLE
Abstract
(EN)
The present invention is related to a peelable film to be sealed on a polyester-based substrate comprising a coextruded multilayer structure comprising: - a rupturable polyester-based sealant layer; - an adhesive layer in contact with said rupturable layer, comprising a polymer selected from the group consisting of ionomers, maleic anhydride grafted polyolefin, EVA, EBA, EMA and EAA; - a gas-barrier layer in contact with said adhesive layer, comprising a gas-barrier polymer selected from the group consisting of EVOH and polyamide, characterised in that the average peel strength between the adhesive layer and the rupturable sealant layer is lower than 15N/15 mm, preferably lower than 13N/15 mm as measured in a 180° peel geometry.
(FR)
La présente invention concerne une pellicule décollable destinée à être collée sur un substrat à base de polyester comprenant une structure multicouche coextrudée. Cette pellicule comprend : une couche de matériau d'étanchéité à base de polyester frangible ; une couche adhésive en contact avec ladite couche frangible, comprenant un polymère sélectionné dans le groupe constitué des ionomères, de la polyoléfine greffée avec de l'anhydride maléique, de l'EVA, de l'EBA, de l'EMA et de l'EAA ; et une couche formant barrière aux gaz en contact avec ladite couche adhésive, comprenant un polymère formant barrière aux gaz sélectionné dans le groupe constitué de l'EVOH et du polyamide. La pellicule de l'invention est caractérisée en ce que la résistance moyenne au pelage entre la couche adhésive et la couche de matériau d'étanchéité frangible est inférieure à 15 N/15 mm, de préférence inférieure à 13 N/15 mm telle que mesurée selon une géométrie de décollement à 180°.
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