| 摘要 |
PROBLEM TO BE SOLVED: To stably use an endless belt without generating meandering and skew by providing a thread-like core material nearby the inside of a core body made of knitting, and constituting the thread-like core material out of a thread made of polyester or nylon. SOLUTION: A core bar is covered with a first core body 12 using seamless knitting of nylon or polyester, a second core body 13 using polyester threads or nylon threads is spirally wound on the first core body 12 by pitch of 0.8 mm, and rubber paste in which polyurethane or the like using for a belt main body 11 is dissolved in a solvent is spread on them as coating paste. Next, after drying it, is covered with a rubber tube extrusion-molded out of polyurethane or the like, a film is wound thereon and they are put in a vulcanizer to be vulcanized, and hence a tube material for an endless belt is obtained. This material is polished on the surface, slit in fixed width, and hence an endless belt 10 of rubber hardness of 35 deg. is manufactured.
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