RUBBER-REINFORCING CORD, METHOD FOR PRODUCING THE SAME, AND RUBBER PRODUCT
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United States of America Patent
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Issued Date -
Feb 11, 2021
app pub date -
Mar 12, 2019
filing date -
Mar 19, 2018
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Abstract
A rubber-reinforcing cord (12) of the present invention includes at least three strands. Each of the strands includes at least one filament bundle and a first coating provided to cover at least a portion of the surface of the filament bundle. The filament bundle consists essentially of aramid fiber filaments. The mass of the first coating is in the range of 14 to 25% with respect to the mass of the filament bundle. Each of the strands is given primary twists at a primary twisting rate of 50 to 100 twists/m. The at least three strands each given primary twists are assembled and given final twists at a final twisting rate of 120 to 200 twists/m.
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