Cords for pneumatic tires and process for making them

Details Cords for pneumatic tires and process for making them Cords for pneumatic tires and process for making them

B - Operations, Transporting

29

D

B29D 30/40 (2006.01) B29D 30/06 (2006.01) B60C 9/00 (2006.01) B60C 9/22 (2006.01) D02G 3/48 (2006.01)

Patent

CA 2104659

CORDS FOR PNEUMATIC TIRES AND PROCESS FOR MAKING THEM Abstract of the Disclosure A method of preparing a ply of composite material by applying an adhesive to a textile material comprising greige cords, so as to achieve an acceptable bond between the cords an elastomeric matrix, while not significantly altering the properties of the cords, is provided. The textile material comprises warp cords and weft cords; the weft cords are used to convey the warp cords through a heat setting oven without applying substantial tension to the warp cords, so as to not change their stress-strain properties. In the illustrated embodiment, the warp cords comprise aramid having a linear density of 500 to 3600 Denier and a twist multiplier of 5 to 8. The cords can be used in a crown reinforcing spirally wound overlay structure of a tire.

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