Vinylidene fluoride resin film and metallized film thereof

Details Vinylidene fluoride resin film and metallized film thereof Vinylidene fluoride resin film and metallized film thereof

1985-03-27

1988-03-15

Smith, Edward J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428421, 428461, 526250, 526255, 264565, 2642902, 26433114, C08F 1422, B32B 2706

Patent

active

047312882

ABSTRACT:
A vinylidene fluoride resin film having (1) a crystal melting point of 182.degree. C. or higher as measured by differential scanning calorimeter in nitrogen atmosphere at a temperature elevation speed of 10.degree. C./min; (2) a diffraction point corresponding to (1 1 .zeta.) of the .alpha.-phase crystal in the wide angle X-ray diffraction photograph; and (3) an orientation degree of the crystal of 0.85 or more when measured under irradiation of X-ray incident vertically on a major surface of the film. The vinylidene fluoride resin film is obtained by inflation accompanying melt necking stretching. The film has improved mechanical properties and heat-stability and is also adapted for use as a base film of a metallized film.

REFERENCES:
patent: 3707592 (1972-12-01), Ishii et al.
patent: 3925339 (1975-12-01), Ishii et al.
patent: 3931446 (1976-01-01), Murayama et al.
patent: 4290983 (1981-09-01), Sasaki et al.
patent: 4298719 (1981-11-01), Mizuno et al.
patent: 4546158 (1985-10-01), Mizuno et al.

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