Multilayer films

Details Multilayer films Multilayer films

1993-01-28

1994-06-21

Sluby, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428 354, 428 367, 428516, 428518, 428520, 428913, B32B 2708, C08F21004

Patent

active

053227204

ABSTRACT:
A multi-layer heat shrinkable film not confined to but including at least three layers, one outside layer being of a blend of EVA and VLDPE, the other outside layer being VLDPE or a blend of VLDPE and EVA and an internal layer being EVA or primarily EVA.
Such a multi-layer heat shrink film has good resistance of abuse. The film may include the optional barrier film and optionally two of the two contiguous co-extruded layers can be irradiated prior to the third or further layers. Such a precursor is then stretched into the film thickness required. The invention covers the method of treatment of such a film and a container or package including such a film.

REFERENCES:
patent: 3741253 (1973-06-01), Brax et al.
patent: 4064296 (1977-12-01), Bornstein et al.
patent: 4640856 (1987-02-01), Ferguson et al.
patent: 4801486 (1989-01-01), Quacquarella et al.
patent: 4863769 (1989-09-01), Lustig et al.
patent: 4863784 (1989-09-01), Lustig et al.
patent: 4927708 (1990-04-01), Herran et al.
patent: 4976898 (1990-12-01), Lustig et al.

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