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1. (WO1991017211) PACKAGING MATERIALS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017211 International Application No.: PCT/GB1991/000699
Publication Date: 14.11.1991 International Filing Date: 01.05.1991
IPC:
B32B 27/32 (2006.01) ,B65D 65/40 (2006.01) ,C08L 23/14 (2006.01) ,C08L 23/20 (2006.01) ,C09J 7/02 (2006.01) ,C09J 123/14 (2006.01) ,C09J 123/20 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27
Layered products essentially comprising synthetic resin
32
comprising polyolefins
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
D
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
65
Wrappers or flexible covers; Packaging materials of special type or form
38
Packaging materials of special type or form
40
Applications of laminates for particular packaging purposes
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23
Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
10
Homopolymers or copolymers of propene
14
Copolymers of propene
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23
Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
18
Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
20
having four to nine carbon atoms
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
J
ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
7
Adhesives in the form of films or foils
02
on carriers
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
J
ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
123
Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
02
not modified by chemical after-treatment
10
Homopolymers or copolymers of propene
14
Copolymers of propene
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
J
ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
123
Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
02
not modified by chemical after-treatment
18
Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
20
having four to nine carbon atoms
Applicants:
COURTAULDS FILMS & PACKAGING (HOLDINGS) LTD. [GB/GB]; Bath Road Bridgwater Somerset TA6 4PA, GB
Inventors:
YOUNG, Daniel, James; GB
Priority Data:
9009782.501.05.1990GB
Title (EN) PACKAGING MATERIALS
(FR) MATERIAUX D'EMBALLAGE
Abstract:
(EN) A heat sealable polymeric film, heat sealing being provided by a blend of (a) from 25 to 75 percent of propylene/ethylene copolymer containing from 2 to 8 percent by weight of units derived from ethylene, (b) from 1 to 60 percent of but-1-ene/ethylene copolymer containing up to 1 percent by weight of units derived from ethylene, and (c) from 1 to 60 percent of but-1-ene/ethylene copolymer containing from 3 to 10 percent by weight of units derived from ethylene, the percentages of the various copolymers being based on the total weight of the blend. Films of the invention have low heat seal threshold temperatures combined with broad ranges of continuous hot tack.
(FR) Un film polymère thermosoudable, le thermosoudage étant effectué en utilisant un mélange de (a) de 25 à 75% de copolymère de propylène/éthylène contenant de 2 à 8% en poids d'unités dérivées d'éthylène, (b) de 1 à 60% de copolymère de but-1-ène/éthylène contenant jusqu'à 1% en poids d'unités dérivées d'éthylène, et (c) de 1 à 60% de copolymère de but-1-ène/éthylène contenant de 3 à 10% en poids d'unités dérivées d'éthylène, les pourcentages des différents copolymères étant basés sur le poids total du mélange. Les films polymères de cette invention ont des températures de seuil de thermosoudage basses combinées à des plages étendues d'adhésivité continue à chaud.
Designated States: AU, CA, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
ES2073752EP0481053US5084360DE000069110237GB2244058AU1991077957