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1. (WO2018051032) REINFORCING ELEMENT, ELASTOMER COMPOSITE AND TYRE COMPRISING SAID REINFORCING ELEMENT

Pub. No.:    WO/2018/051032    International Application No.:    PCT/FR2017/052467
Publication Date: Fri Mar 23 00:59:59 CET 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: B60C 9/00
B60C 9/08
B60C 9/13
B60C 9/04
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors: GUILLAUMAIN, Jérémy
ANDRE, Guillaume
VALLET, Solenne
VENUAT, Julien
Title: REINFORCING ELEMENT, ELASTOMER COMPOSITE AND TYRE COMPRISING SAID REINFORCING ELEMENT
Abstract:
The invention relates to a reinforcing element, an elastomer composite and a tyre comprising said reinforcing element (45), comprising an assembly (49) consisting of: a multifilament strand of aromatic polyamide or aromatic copolyamide (46), and a multifilament strand of polyester (48). The two strands (46, 48) are wound helically around one another and the reinforcing element (45) has a balanced twist. The twist factor K of the reinforcing element (45) varies between 5.5 and 6.5, with K being defined by the formula K = (R x Ti1/2) / 957, in which R is the twist of the reinforcing element (45) expressed as turns per metre and Ti is the sum of the titres of the multifilament strands of the reinforcing element (45) in tex.