| 摘要 |
The covered string was prepd. by winding a strand, such as nylon or polyester filament, on a rubber string and heat-treating it to prevent twisting. Thus, 70 denier nylon filament was wound on a rubber string and was impregnated in 100≦̸C water for 5 min. Then the covered string of rubber was impregnated in water contg. 0.2 wt.% of softener for 20 min and was dried to give non-twisted covered string of rubber.
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