Film embossing process

Details Film embossing process Film embossing process

1978-12-21

1980-10-07

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Effecting temperature change

264284, B29C 1700, B29C 2500

Patent

active

042268257

ABSTRACT:
A film embossing process of roughening a lateral edge of a thermo-plastic film by mechanically deforming said lateral edge. The lateral edge is subjected to the film embossing process at a temperature of from the glass transition temperature (Tg) of the film to the temperature of (tg+60.degree. C.). Subsequently the film is subjected to heat treatment at a temperature higher than the temperature of said film embossing process by at least 10.degree. C. to 30.degree. C.

REFERENCES:
patent: 2177661 (1939-10-01), Kimble
patent: 3261903 (1966-07-01), Carr
patent: 3502765 (1970-03-01), Spencer
patent: 3595836 (1971-07-01), Korneli

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