Heat-shrinkable laminated film

Details Heat-shrinkable laminated film Heat-shrinkable laminated film

1988-12-06

1991-07-30

Buffalow, Edith L.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428518, 428349, 428910, 428 349, 428 367, B32B 2700

Patent

active

050359550

ABSTRACT:
The present invention discloses a biaxially oriented heat-shrinkable laminated film comprising a laminate having a vinylidene chloride copolymer composition layer containing 0.5 to 9.1% by weight of a polyfunctional (metha)crylate, the vinylidene chloride copolymer being crosslinked by applying electron beams to the laminate at a dosage rate of 1 to 10 megarads, and exhibiting a heat shrinkage percentage at 90.degree. C. of 15% or more and excellent gas barrier properties.
The laminated film of the present invention also exhibits excellent gas barrier properties, transparency, melt hole resistance and heat sealing resistance. The film having an outer layer composed a crosslinked polyolefin exhibits particularly excellent melt hole resistance and heat sealing resistance.

REFERENCES:
patent: 3852177 (1974-01-01), Atchison et al.
patent: 4714638 (1987-12-01), Lustig et al.
patent: 4892765 (1990-01-01), Hisazumi et al.
patent: 4894107 (1990-01-01), Tse et al.
patent: 4957790 (1990-09-01), Warren

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