Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1985-08-30
1987-07-21
Buffalow, Edith
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428500, 428516, 428 35, B32B 2700
Patent
active
046818049
ABSTRACT:
A room temperature aged polymer film having good hot tack, low heat sealing temperature and high clarity for packaging which contains a polypropylene or polypropylene-based copolymer or blend as a substrate or core layer and a polymer blend as a surface layer, wherein the polymer blend comprises a butene-1-propylene copolymer with a propylene comonomer content of from about 10% by weight to about 25% by weight.
REFERENCES:
patent: 4230767 (1980-10-01), Isaka et al.
patent: 4302504 (1981-11-01), Lansbury
patent: 4360650 (1982-11-01), Desvignes et al.
patent: 4456660 (1984-06-01), Colombo
Buffalow Edith
Buskop Wendy K. B.
Shell Oil Company
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