Pneumatic tires with spirally wound aramid cord overlay

Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube

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Details

152531, 152533, 156117, B60C 918, B60C 920, B60C 922, D02G 348

Patent

active

058491210

ABSTRACT:
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 are aramid cords 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.

REFERENCES:
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Std Methods of Testing Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made From Man-Made Organic-Base Fibers D885m-85 Annual Book of ASTM Stds, vol. 07.01 and 07.02 Sep. 1985 Sections 1-5, 16-21.1.2.
Kevlar* Subcoat and Topcoat Preparation for Type 950 (tires) and Type 956 (mechanical rubber goods), Dupont Geneva, Jan. 1983.

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