Title:
METHOD AND DEVICE FOR PRODUCING REINFORCING CHOPPED STRAND FOR COMPOSITE MATERIAL
Document Type and Number:
Japanese Patent JPH04352888
Kind Code:
A
Abstract:
PURPOSE: To produce a chopped strand comprising a double twisted fiber strand aggregate having many radiate branches, retaining the shape of the collected product without using a binder, and used as reinforcing material for composite materials.
CONSTITUTION: A fiber strand 1 composed of 12000 PAN carbon fibers each having a diameter of approximately 7μm is pulled out from a bobbin 7 with a reciprocating device 15, while giving twists to the fiber strand 1 with a twister 11 in a twist rate of 80-100 twists per 100cm of the length of the strand. When the strand is pulled in a tension of 500g, one end of the strand is instantly chopped with a cutter 30.
Inventors:
SATO MASARU
TAKEUCHI KO
YUMITATE KOZO
FUKUDA NORIYOSHI
TAKEUCHI KO
YUMITATE KOZO
FUKUDA NORIYOSHI
Application Number:
JP12338291A
Publication Date:
December 07, 1992
Filing Date:
May 28, 1991
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
B29B11/16; B29B15/08; C04B30/02; C22C47/00; C22C47/02; C22C47/06; D02G3/28; D02G3/44; D07B5/00; B29K105/10; (IPC1-7): B29B11/16; B29B15/08; B29K105/10; C04B30/02; C22C1/09; D02G3/28; D02G3/44; D07B5/00
Attorney, Agent or Firm:
Yoshio Kosugi (1 person outside)
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