Process of making heat-sealable oriented web

Details Process of making heat-sealable oriented web Process of making heat-sealable oriented web

1993-04-15

1994-07-12

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

B29C 5902, B29C 5904

Patent

active

053286537

ABSTRACT:
A heat-sealable oriented film or layer of a semi-crystalline thermoplastic polymer. The film has a thin, heat-sealable layer of the same thermoplastic polymer having a different heat-seal temperature, which layer is heat-sealable without requiring fusion of the entire film. There is also provided a method for producing the claimed heat-sealable film.

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patent: 4247591 (1981-01-01), Gould
patent: 4428720 (1984-01-01), Van Erden et al.
patent: 4451524 (1984-05-01), Matsumoto
patent: 4495124 (1985-01-01), Van Erden et al.
patent: 4822451 (1989-04-01), Ouderkirk et al.

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