Title:
BIAXIALLY ORIENTED POLY-P-PHENYLENE SULFIDE FILM
Document Type and Number:
Japanese Patent JP3099981
Kind Code:
B2
Abstract:
PURPOSE: To improve the electrical insulating properties of the subject film by forming a film from poly-p-phenylene sulfide resin pellets contg. inert fine particles having a mean value and a relative standard deviation of the equivalent diameter of equal-area circle as calculated by a specific equation and a specified particle diameter ratio.
CONSTITUTION: Inert fine particles, e.g. vaterite CaCO3, are dispersed in a liq. boiling at 180-290°C, e.g. ethylene glycol, to give a slurry contg. the particles having a particle diameter ratio of 1.0-2.5, a relative standard deviation of the equivalent diameter of equal-area circle as calculated by equation I [wherein Di is an equivalent diameter (μm) of equal-area circle of particles; D is a mean value (μm) of the equivalent diameter calculated by equation II; and (n) is the number of particles] of 1.0 or lower, and a mean value of the equivalent diameter of 0.05-3.0μm. The slurry is mixed with a poly-p-phenylene sulfide powder and extruded on a vented extruder to give pellets contg. 0.01-2wt.% the particles, which are extruded into a film and biaxially oriented, thus giving the objective film.
Inventors:
Yukio Noguchi
Yamaoka Midori
Tomoaki Ueda
Yamaoka Midori
Tomoaki Ueda
Application Number:
JP22621591A
Publication Date:
October 16, 2000
Filing Date:
September 05, 1991
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B29C55/12; C08J5/18; C08K7/16; C08L81/02; B29K81/00; B29L7/00; B29L31/34; (IPC1-7): C08J5/18; B29C55/12; C08K7/16; C08L81/02
Domestic Patent References:
| JP1266145A |
Attorney, Agent or Firm:
Toshimitsu Ban
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