| 摘要 |
PURPOSE:To improve the extent of endless working properties by installing a separating rubber layer between coat rubber covering a core body of an aromatic polyamide fiber or the like and both-side cover rubber. CONSTITUTION:A core body 13 of aromatic polyamide or overall aromatic polyester fiber is covered with coat rubber 12, interposing separating rubber layers 16a and 16b therein, and upper face cover rubber 14 and lower face cover rubber 15 both are formed. In this case, these separating rubber layers 16a and 16b are made up of adhesion between the coat rubber 12 and upper-and- lower-surface cover rubber 14 and 15, and at time of separation, such one that is subjected to cohesive failure is desirable. In this constitution, after separation, these separating rubber layers 16a and 16b left behind on the coat rubber 12 are buffed with a sander or the like, removing them to the full. Thus, endless working properties are improved.
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