Title: Metallized film

Abstract: Metallized plastic films having deposited metal layers on both surfaces and being adapted for use as dielectric films, piezoelectric films or pyroelectric films are disclosed. At least a portion of the metal layer deposited on one surface of the film has a relatively increased thickness of 700 A or more and at least a portion of the metal layer deposited on the other surface has a relatively reduced thickness of 600 A or less. The increased thickness and reduced thickness portions are positioned opposite to one another. The thin layer permits rapid self recovery of localized dielectric breakdown, while the relatively thick layer provides better utility for the electric uses to which the film is put.

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Inventors: Yoshikawa, Shinsuke (Iwaki, JA)
Sasaki, Tohru (Iwaki, JA)
Terasaki, Syuuzi (Iwaki, JA)

Application Number: 654820
Filing Date: 1976-02-03
Publication_date: 1977-09-20
Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha (Tokyo, JA)
Primary Class(es): 428/172 427/81, 427/100, 428/213, 428/216, 428/333, 428/336, 428/339, 428/461, 428/462, 428/463
Other Classes:
US Patent Ref:

2302024	Nov, 1942	Gos, Jr.	427/106.
3712849	Nov, 1973	Robbiati	428/213.
3912830	Oct, 1975	Murayama et al.	427/100.

Other Refs:
Primary Examiner: Lesmes, George F.
Assistant Examiner: Silverman, Stanley S.
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak