The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Aug. 31, 1989
Toshiya Mizuno, Tsuchiura, JP;
Yoshikichi Teramoto, Tsuchiura, JP;
Takeshi Saito, Tsuchiura, JP;
Juichi Wakabayashi, Tamari, JP;
Kureha Kagaku Kogyo K.K., Tokyo, JP;
Abstract
A biaxially-stretched film is made of a resin composition composed of 100 parts by weight of a substantially linear poly(arylene sulfide) having a melt viscosity of at least 1,000 poises and 2-25 parts by weight of a styrene-based resin. The film is produced by diluting a master batch, which has been prepared in advance and is composed of the poly(arylene sulfide) and styrene-based resin, with an additional supply of the poly(arylene sulfide) so as to prepare a resin composition containing the polystyrene-based resin in an amount of 2-25 parts by weight per 100 parts by weight of the poly(arylene sulfide), and then biaxially stretching the thus-prepared resin composition.