Method of welding thermoplastic film

Details Method of welding thermoplastic film Method of welding thermoplastic film

1994-05-03

1995-09-12

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563803, 1563806, B32B 3124

Patent

active

054494281

ABSTRACT:
A method of welding at least two layers of a thermoplastic film which comprises a copolymer or copolymer-polymer mixture selected from the group consisting of ethylenevinylacetate (EVA) copolymer, an EVA copolymer and polyethylene, an EVA copolymer and polypropylene, and an EVA copolymer and polyethylene and polypropylene, with the proviso that the concentration of vinylacetate in said film is from about 12 to about 28% by weight, said method comprising the steps of:

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