Biaxially-oriented polycarbonate film for capacitors

Details Biaxially-oriented polycarbonate film for capacitors Biaxially-oriented polycarbonate film for capacitors

1990-10-25

1991-12-31

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428332, 428337, 428412, 428901, B32B 900

Patent

active

050771221

ABSTRACT:
Biaxially oriented, partially crystalline polycarbonate carbonate films have improved properties. For instance, a 2 .mu.m film that has a degree of crystallinity of about 35% has an electrical breakdown strength of about 13.5 kv per mil. Such a film has a stretch ratio in the transverse direction of about 2.27/1 and in the machine direction of about 3.77/1.

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