Polypropylene-based wrap film

Details Polypropylene-based wrap film Polypropylene-based wrap film

2005-06-14

2005-06-14

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

C428S515000, C428S516000, C428S910000

Reexamination Certificate

active

06905760

ABSTRACT:
Provided is a polypropylene-based multilayer wrap film comprising (A) a surface layer containing a first composition comprising 50 to 80 wt. % of (S1) a crystalline polypropylene-based resin and 20 to 50 wt. % of (S2) at least one softener selected from amorphous or low-crystalline propylene-α-olefin copolymers and butene-1 polymers, and based on 100 parts by weight of the first composition, 5 to 15 parts by weight of (S3) a hydrogenated terpene resin and 10 to 20 parts by weight of (S4) an aliphatic hydrocarbon which is liquid at normal temperature, and (B) a core layer which is adjacent to the surface layer and contains 80 to 98 wt. % of (C1) a crystalline polypropylene-based resin and 2 to 20 wt. % of (C2) an aliphatic hydrocarbon which is liquid at normal temperature.

REFERENCES:
patent: 5910374 (1999-06-01), Shah
patent: 10-202806 (1998-08-01), None
patent: 2001-328223 (2001-11-01), None
patent: 2002-46238 (2002-02-01), None
patent: 2003-19778 (2003-01-01), None

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