CORD, RUBBER-CORD COMPOSITE STRUCTURE, AND TIRE

Title:

CORD, RUBBER-CORD COMPOSITE STRUCTURE, AND TIRE

Document Type and Number:

WIPO Patent Application WO/2013/176113

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a cord obtained by twisting purified polysaccharide fibers produced by using a raw material with a low environmental impact as a result of carbon disulfide emissions being eliminated, said cord being capable of providing durability and resistance to external damage to a tire when used in a tire. The cord is obtained by bringing a polysaccharide solution, obtained by dissolving a raw polysaccharide material in a liquid containing an ionic liquid, into contact with a solidified liquid, and then twisting raw yarn, which consists of purified polysaccharide fibers obtained by spinning polysaccharides. The cord is characterized in that: the relationship between the tenacity (TB) (cN/dtex) of the raw yarn at 25°C and the elongation at break (EB) (%) of the raw yarn satisfies formula (1) and formula (2); and, when the tenacity of the cord, which is produced by twisting the raw yarn, at 25°C is denoted as CT (cN/dtex), the tenacity utilization rate (CT/TB) after twisting is at least 70%.

Inventors:

KOIDE MITSUHARU (JP)
SUGIMOTO KENICHI (JP)

Application Number:

PCT/JP2013/064047

Publication Date:

November 28, 2013

Filing Date:

May 21, 2013

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)

International Classes:

D01F2/00; B60C9/00; D02G3/48

Domestic Patent References:

WO2012008401A1	2012-01-19
WO2012074019A1	2012-06-07

Foreign References:

JP2005023508A	2005-01-27
JP2006188806A	2006-07-20
US1943176A	1934-01-09
JPS60144322A	1985-07-30
JP4242768B2	2009-03-25
US20080269477A1	2008-10-30
CN101328626A	2008-12-24

Other References: