Title:
TRANSMISSION V-BELT AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/139578
Kind Code:
A1
Abstract:
Provided is a transmission V-belt with a V-shaped cross section orthogonal to a belt circumferential direction, the belt having a friction transmission surface on both sides thereof in the belt width direction. The belt comprises: a rubber layer composed of a rubber composition; core fibers embedded in the rubber layer along the belt circumferential direction; and at least one reinforcing layer embedded in the rubber layer. The reinforcing layer includes a plurality of reinforcing fiber filaments having the same length as the belt width and does not include fibers crossing the belt width direction, or when such fibers are included, the weight, per unit area, of the fibers crossing the belt width direction is 30% or less of the weight of the reinforcing fiber filaments. The reinforcing layer has a structure in which the reinforcing fiber filaments are spread in a sheet shape, while being aligned in the belt with direction, and bonded in a non-twisted state. The reinforcing layer has a thickness of 0.05-0.5 mm.
Inventors:
HAMAMOTO KOUHEI (JP)
NISHIMURA TOSHIHIRO (JP)
NISHIMURA TOSHIHIRO (JP)
Application Number:
PCT/JP2018/002458
Publication Date:
August 02, 2018
Filing Date:
January 26, 2018
Export Citation:
Assignee:
MITSUBOSHI BELTING LTD (JP)
International Classes:
F16G5/08; B29D29/10; B32B5/28; B32B25/02; D04H3/04; D07B1/02; F16G5/00; F16G5/06
Domestic Patent References:
| WO2015159795A1 | 2015-10-22 |
Foreign References:
| JPH04219545A | 1992-08-10 | |||
| JPH0563656B2 | 1993-09-13 | |||
| JPS597859B2 | 1984-02-21 | |||
| JP2010196889A | 2010-09-09 | |||
| JP2017011806A | 2017-01-12 | |||
| JP2018004453A | 2018-01-11 |
Other References:
See also references of EP 3575631A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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