Thermoplastic resin film and a method for producing the same

Details Thermoplastic resin film and a method for producing the same Thermoplastic resin film and a method for producing the same

1993-10-13

1995-05-02

Delmendo, Romulo H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642356, 2642358, 2642896, 264342RE, B29C 4788

Patent

active

054116953

ABSTRACT:
A thermoplastic resin film at least oriented in the transverse direction with minimized bowing phenomenon is provided. The thermal shrinkage stress in the transverse direction of the film satisfies the following formula I, and the thermal shrinkage factor of said film in the transverse direction at a temperature that is 40.degree. C. higher than the glass transition temperature of said resin is 5% or less:

REFERENCES:
patent: 2728941 (1956-01-01), Alles et al.
patent: 4698195 (1987-10-01), Okumura et al.
patent: 5024799 (1991-06-01), Harp et al.
(Geva) AGFA-Gevaert AG, "Biaxial Orient Polymer Film Reduce Anistrope Preparation Cooling Film After Stretch Rapid Heat Set", RD245023, (Oct. 9, 1984).

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