Partitioned rubber-coated fabric
AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Etablissements Michelin
InventorsReed E Smith, Cecil Richard Gray
Life of this patent
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Abstract
In a rubber-coated fabric, a plurality of warp cords is included with a spacing d between, sides of adjacent warp cords, each of the warp cords being coated with a layer of rubber compound, A cut line may further be included that separates groups of the warp cords, each group having a predetermined number of the warp cords. The cut line, may be formed by between 2 and 6 adjacent cut line warp cords, wherein a distance dc, between any two sides of adjacent cut Hue warp cords may be no more than. 50% of d. The layer of rubber compound that coats- the rubber-coated fabric is thin enough to outline the cut line on a surface of the rubber-coated woven fabric.
Claims19
A rubber-coated woven fabric, comprising:
- a plurality of warp cords with a spacing d between sides of adjacent warp cords, each of the warp cords being coated with a layer of rubber compound;
- a cut line separating groups of a predetermined number of the warp cords, the cut line formed by between 2 and 6 adjacent cut line warp cords, wherein a distance dc between any two sides of adjacent cut line warp cords is no more than 50% of d, and wherein the layer of rubber compound is thin enough to outline the cut line on a surface of the rubber-coated woven fabric.
A method for making a cap ply material for a pneumatic tire, comprising:
- setting up groups of warp cords on a textile loom reed, each group having a predetermined number of warp cords at a selected warp density of between 60 and 160 warp cords per decimeter at a spacing d between sides of adjacent warp cords;
- forming a gap between the groups of warp cords in the reed setup by eliminating a warp cord at the selected warp density;
- grouping adjacent cut line warp cords on the textile loom reed, the cut line warp cords defining a side of the gap, wherein a distance dc between any two sides of adjacent cut line warp cords is no more than 50% of d;
- weaving the fabric with a weft density of between 3 and 10 weft cords per decimeter;
- treating the woven fabric with a chemical bath at a set temperature and tension;
- closing the gap between the groups, wherein the application of the set tension at the set temperature during the treating step closes the gap between the groups,
- coating the woven fabric with a layer of rubber compound, wherein the layer of rubber compound is thin enough to define a cut line formed on a surface of the rubber-coated woven fabric by the cut line cords.
The method of claim 1110, wherein the predetermined temperature is between 125° C. and 300° C.
Dependencies are inferred from the claim text.