Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1982-04-15
1984-03-27
Thomas, Alexander
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428213, 428349, 428515, 428516, 525240, B32B 2708
Patent
active
044394780
ABSTRACT:
A heat sealable and shrinkable, coextruded, multi-layer packaging film having a propylene homopolymer base layer and a skin layer of a preferred blend of 60% to 80% propylene-ethylene copolymer with propylene homopolymer provides a sealing temperature range of up to 30.degree. C.
REFERENCES:
patent: 3220966 (1965-11-01), Flanagan
patent: 3285766 (1966-11-01), Barkis et al.
patent: 3671383 (1968-11-01), Sakata et al.
patent: 4132050 (1979-01-01), Young
patent: 4148972 (1979-04-01), Yamane et al.
Esakov Michael D.
Ferguson Daniel F.
Stringer Frederick D.
Harps Joseph P.
Lee, Jr. William D.
Thomas Alexander
Toney John J.
W. R. Grace & Co., Cryovac Division
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