Heat-sealable plastic film

Details Heat-sealable plastic film Heat-sealable plastic film

1993-01-19

1995-02-28

Nakarani, D. S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428349, 4284758, 4284761, 428483, 428517, 428521, B32B 2708, B32B 2734, B32B 2736, B32B 3130

Patent

active

053935926

ABSTRACT:
A heat-sealable plastic film produced by coextrusion or lamination, comprising 2 layers A and C and, if desired, a layer B and, if desired, a layer of an adhesion promoter for bonding each two of the layers A, B (if present) and C (the sum of the thicknesses or of the weights of A, B (if present) and C in each case being 100) comprises from 1 to 50 % of a layer of a heat-sealable, impact resistant polystyrene A, up to 95% of a base layer B and from 1 to 99% by weight of a high-melting plastic layer C.

REFERENCES:
patent: 4339502 (1982-07-01), Gerry et al.
patent: 4769261 (1988-09-01), Hazelton et al.
patent: 4803102 (1989-02-01), Raniere et al.
patent: 5221136 (1993-06-01), Hauck et al.

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