COMPLEX FIBER STRING AND METHOD OF MANUFACTURING THE SAME

Title:

COMPLEX FIBER STRING AND METHOD OF MANUFACTURING THE SAME

Document Type and Number:

WIPO Patent Application WO/1994/015015

Kind Code:

A1

Abstract:

This invention relates to a complex fiber string used as a tension member of a PC structure. The characteristics of the present invention reside in that it provides a complex fiber string having a high mechanical strength and produced by heating a thermosetting resin-impregnated fiber core so as to put the thermosetting resin in a semi-hardened state, subjecting the outer circumferential surface of the fiber core to primary wrapping and secondary wrapping with bundled fiber yarn, intertwining a plurality of fiber cores thus obtained, and then heating the intertwined fiber cores so as to harden the semi-hardened thermosetting resin. Another characteristic of the present invention reside in that the bundled fiber yarn for the primary or secondary wrapping of the fiber core is wound therearound in a spaced manner so as to form helical ridges and grooves on the outer circumferential surface of the fiber core, whereby the bonding strength required by a final product as a tension member with respect to a material to which the tension member is to be applied is improved.

Inventors:

KIDO TOSHIROH (JP)
NISHIMURA YOSHIFUMI (JP)
YAMASHITA KENICHI (JP)
YAMAMOTO SUSUMU (JP)
TANAKA IKUO (JP)

Application Number:

PCT/JP1993/001894

Publication Date:

July 07, 1994

Filing Date:

December 27, 1993

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
KIDO TOSHIROH (JP)
NISHIMURA YOSHIFUMI (JP)
YAMASHITA KENICHI (JP)
YAMAMOTO SUSUMU (JP)
TANAKA IKUO (JP)

International Classes:

D02G3/38; D07B1/02; D07B5/00; E04C5/07; E04C5/08; E04C5/12; (IPC1-7): D07B1/02; D07B1/16; D07B7/14

Foreign References:

JPS5526070U	1980-02-20
JPS53134953A	1978-11-25
JPS49119554U	1974-10-14

Other References: