Patent EP0143567A2 successfully refreshed from Google Patents.
EP0143567A2
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Decorative packaging films
Assignee: Akzo Nobel Films Holding Ltd
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Filing: 1984-11-02
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Granted: —
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Expires: 2004-11-02
Abstract
Abstract The invention is concerned with a decorative packaging film comprising a base film of a synthetic polymeric material (an olefinic polymer) containing a highly light absorbent pigment, for example carbon black, and at least one surface layer of a second synthetic polymeric material which is light transmittable and which contains a solid particulate material for example calcium carbonate, having a particle size of from 0.1 to 10 microns and present in an amount from 1 to 40% by weight, the combination having been stretched to cause the formation of voids in the surface layer or layers at the sites of the particles of the particulate material. The appearance of the film varies from an intense opalescence to a lustrous metallic appearance.
Inventors
- 👤 Kenneth Wade
- 👤 Keith Pye
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:20
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/18; B32B27/20; B32B27/205; B32B27/32; B32B27/322; B44; B44F; B44F1/00; B44F1/06; B44F9/00; B44F9/10; B32B38/00; B32B38/0012; B32B2038/0028; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2307/00; B32B2307/30; B32B2307/31; B32B2451/00; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249986
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A method for the manufacture of a decorative packaging film comprising forming a base film of a synthetic polymeric material incorporating a highly light absorbent pigment, applying to at least one surface of the base layer a second synthetic polymeric material which is light transmittable and in which is dispersed from 1 to 40% by weight of a solid particulate material having a particle size of from 0.1 to 10 microns and stretching the combination of the base layer and surface layer or layers in one or more directions so as to form voids in the surface layer or layers at the sites of the particles of the particulate material.
Claim 2
Independent Claim
110 words
A method for the manufacture of a decorative packaging film comprising forming a base film of a synthetic polymeric material incorporating a highly light absorbent pigment, applying to at least one surface of the base layer a second synthetic polymeric material which is light transmittable and in which is dispersed from 1 to 40% by weight of a solid particulate material having a particle size of from 0.1 to 10 microns and stretching the combination of the base layer and surface layer or layers in one or more directions so as to form voids in the surface layer or layers at the sites of the particles of the particulate material.
Claim 3
Dependent Claim
41 words
A method as claimed in claim 1 in which the base film is low, medium or high density polyethylene, linear low density polyethylene, polypropylene, a copolymer or terpolymer selected from the monomers ethylene, propylene or butene-1, a polyester or polyvinyl chloride.
Claim 4
Dependent Claim
34 words
A method as claimed in claim 1 or claim 2 in which the pigment is particulate and is present in the base film in an amount of from o.1% to about 40% by weight.
Claim 5
Dependent Claim
30 words
A method as claimed in claim 3 in which the pigment is carbon black present on the base film in an amount of from 0.1 to about 10% by weight.
Claim 6
Independent Claim
47 words
A method as claimed in any one of the preceding claims in which the second synthetic polymeric material is low, medium or high density polyethylene, linear low density polyethylene, polypropylene, a copolymer or terpolymer selected from the monomers ethylene, propylene or butene-1, a polyester or polyvinyl chloride.
Claim 7
Independent Claim
47 words
A method as claimed in any one of the preceding claims in which the solid particulate material dispersed in the second synthetic polymeric material is a mineral, a natural filler or a polymer having a melting point above the extrusion temperature of the second synthetic polymeric material.
Claim 8
Dependent Claim
18 words
A method as claimed in claim 6 in which the mineral is silica, titanium dioxide or calcium carbonate.
Claim 9
Independent Claim
44 words
A method as claimed in any one of the preceding claims in which the solid particulate material has an average particle size in the range between 1 and 5 microns and is present in the second polymeric material from 2 to 20% by weight.
Claim 10
Independent Claim
34 words
A method as claimed in any one of the preceding claims in which a transparent heat-sealable composition layer is applied to one or both surfaces of the base layer/surface layer or surface layers combination.
Claim 11
Independent Claim
31 words
A method as claimed in any one of the preceding claims in which the second synthetic polymeric material layer is applied to the base film by melt extrusion or by co-extrusion.
Claim 12
Dependent Claim
23 words
A packaged article which is wrapped with a packaging film as produced by the method claimed in any one of the preceding claims.
References Cited (Backward Citations)
GB251535A
Cited
EP0083495A1
Cited
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