Heat-shrinkable laminated film

Details Heat-shrinkable laminated film Heat-shrinkable laminated film

1989-02-28

1990-10-16

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

4284761, B32B 2732, B32B 2734, B32B 2708

Patent

active

049634267

ABSTRACT:
A heat-shrinkable laminated film suitable for a packaging film, having at least two layers of a mixed aliphatic polyamide resin layer (A) of 55 to 90 wt. % of an aliphatic polyamide resin with a crystalline melting point of 175.degree. to 240.degree. C. and 45 to 10 wt % of an aliphatic polyamide resin with a crystalline melting point of from not less than 120.degree. C. to less than 175.degree. C.; and a mixed resin layer (B) of a saponified ethylene-vinyl acetate copolymer as the main constituent. These laminated films have excellent gas barrier properties, stretchability, uniform heat-shrinkability and useful dimensional stability.

REFERENCES:
patent: 4361628 (1982-11-01), Krueger et al.
patent: 4695491 (1987-09-01), Kondo et al.
patent: 4734327 (1988-03-01), Vicik
patent: 4735855 (1988-04-01), Wofford et al.
patent: 4764406 (1988-08-01), Hisazumi et al.
patent: 4784863 (1988-11-01), Lustig et al.
patent: 4818588 (1989-04-01), Okabe et al.

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