Title:
MULTI-STRAND CORD IN WHICH THE BASIC STRANDS ARE DUAL LAYER CORDS, RUBBERISED IN SITU
Document Type and Number:
WIPO Patent Application WO/2011/000964
Kind Code:
A3
Abstract:
The invention relates to a multistrand cord with a K x (L+M) construction, which can be used in particular for reinforcing the belts of tyres for industrial vehicles, consisting of K basic strands helically assembled at a pitch Pκ, each basic strand: comprising a cord (10) having two layers (Ci, Ce) with an L+M construction, rubberised in situ, comprising an inner layer (Ci) made up of L wires (11) with a diameter d1, L varying from 1 to 4, and an outer layer (Ce) of M wires (12), M being no lower than 5, with a diameter d2 and helically assembled at a pitch p2 around the inner layer (Ci); and having the following characteristics (d1, d2 and p2 being given in mm): - 0.10 < d1 < 0.50; - 0.10 < d2 < 0.50; - 3 < p2 < 10; the inner layer (Ci) thereof being sheathed by a rubber composition (14) referred to as filling rubber; along the entire length of the elementary strand equal to K times Pκ, the filling rubber (14) being present in each of the capillaries (15) delimited by the L wires (11) of the inner layer (Ci) and the M wires (12) of the outer layer (Ce) and, when L is equal to 3 or 4, the rubber being present in the central channel (13) delimited by the L wires (11) of the inner layer (Ci); the level of filling rubber (14) in said basic strand (10) being 5 to 40 mg/g of basic strand.
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Inventors:
GAUTHIER JACQUES (FR)
BARGUET HENRI (FR)
BOISSEAU SANDRA (FR)
POTTIER THIBAUD (FR)
BARGUET HENRI (FR)
BOISSEAU SANDRA (FR)
POTTIER THIBAUD (FR)
Application Number:
PCT/EP2010/059525
Publication Date:
March 03, 2011
Filing Date:
July 05, 2010
Export Citation:
Assignee:
MICHELIN SOC TECH (FR)
MICHELIN RECH TECH (CH)
GAUTHIER JACQUES (FR)
BARGUET HENRI (FR)
BOISSEAU SANDRA (FR)
POTTIER THIBAUD (FR)
MICHELIN RECH TECH (CH)
GAUTHIER JACQUES (FR)
BARGUET HENRI (FR)
BOISSEAU SANDRA (FR)
POTTIER THIBAUD (FR)
International Classes:
D07B1/06; D07B1/16; D07B7/14
Domestic Patent References:
| WO2009011397A1 | 2009-01-22 | |||
| WO2009080583A1 | 2009-07-02 | |||
| WO2010012411A1 | 2010-02-04 |
Foreign References:
| JP2006218934A | 2006-08-24 | |||
| JP2009024268A | 2009-02-05 | |||
| FR2925922A1 | 2009-07-03 | |||
| FR2925923A1 | 2009-07-03 |
Other References:
WOLF E ET AL: "ALTERNATIVE KONSTRUKTIONEN VON STAHLZUGTRAGERN IN FORDERGURTEN", KAUTSCHUK UND GUMMI - KUNSTSTOFFE, HUTHIG VERLAG, HEIDELBERG, DE, vol. 46, no. 9, 1 September 1993 (1993-09-01), pages 727 - 731, XP000397379, ISSN: 0948-3276
Attorney, Agent or Firm:
RIBIERE, Joël (23 place des Carmes-Déchau, SGD/LG/PI - F35 - Ladoux Clermont-Ferrand Cedex 9, FR)
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