Title:
PET FIBER-RUBBER COMPOSITE AND TIRE
Document Type and Number:
WIPO Patent Application WO/2024/070779
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a PET fiber-rubber composite that achieves excellent strength and excellent low rolling resistance when applied to a tire, without increasing the total fineness of cords or sheet thickness. In order to solve the abovementioned problem, a sheet-shaped PET fiber-rubber composite according to the present invention is obtained by coating PET fiber cords with a coating rubber and characterized by satisfying expression (1). (1): (A/B)/total cord fineness ≥ 0.3
A: cord strength (N) × fiber occupancy; fiber occupancy: cross-sectional area (mm2) of PET fiber cords / (thickness (mm) of composite × (diameter (mm) of PET fiber cords + inter-cord distance (mm) of PED fiber cords)). B: tan δ of coating rubber × rubber occupancy; rubber occupancy: 1 - fiber occupancy; total cord fineness: total of fineness of PET fibers constituting cords.
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Inventors:
GIZA EMIL (JP)
Application Number:
PCT/JP2023/033783
Publication Date:
April 04, 2024
Filing Date:
September 15, 2023
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C9/00; B60C1/00; B60C9/04; C08K3/04; C08L7/00; C08L9/04; C08L9/06; C08L67/02; D02G3/48; D06M15/693; D07B1/16
Foreign References:
| JP2021024509A | 2021-02-22 | |||
| JPH11334313A | 1999-12-07 | |||
| JP2010120400A | 2010-06-03 | |||
| JP2003054215A | 2003-02-26 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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