Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1993-03-30
1995-12-12
Buffalow, Edith
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 359, 428349, 428461, 428511, 428516, 428910, B29D 2200
Patent
active
054748208
ABSTRACT:
A multilayer polypropylene film is disclosed that has at least one base layer containing polypropylene and at least one outer layer containing a mixture of two mixture components I and II. Mixture component I is essentially a polypropylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another .alpha.-olefin having 5 to 10 carbon atoms or propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers, if desired mixed with one or more of said homopolymers, copolymers and terpolymers. Mixture component II is essentially an HDPE or a blend of two blend components A and B. Blend component A is essentially an HDPE. Blend component B is essentially a polypropylene homopolymer or a copolymer of ethylene and propylene or ethylene and butylene or propylene and butylene or ethylene and another .alpha.-olefin having 5 to 10 carbon atoms or propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a terpolymer of ethylene and propylene and butylene or ethylene and propylene and another .alpha.-olefin having 5 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers. The film has a silk-matt finish.
REFERENCES:
patent: 4283453 (1981-08-01), Seifried et al.
patent: 4297415 (1981-10-01), Ward et al.
patent: 4419411 (1983-12-01), Park
patent: 4522887 (1985-06-01), Koebisu et al.
patent: 4578316 (1986-03-01), Clauson et al.
patent: 4622237 (1986-11-01), Lori
patent: 4666778 (1987-05-01), Hwo
patent: 4855187 (1989-08-01), Osgood, Jr. et al.
Murschall Ursula
Speith Angela
Buffalow Edith
Hoechst Aktiengesellschaft
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