| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure the sufficient durability, high precision and high productivity by using rubber compositions whose modulus varies in the order of supply after vulcanization, then extruding a first rubber material and blending this rubber material with a second rubber material as specified to mold a first lamination rubber member. SOLUTION: Rubber materials A, B show a varying modulus between two different kinds of rubber material at least in the order of supply after vulcanization. First the first rubber material A is extruded from an extruder 2 and the extruded strip-like rubber is sequentially wound around the surface of a support 1 helically. Next a strip-like blended rubber obtained by adding the second rubber material B to the first rubber material A, is sequentially wound around the support 1 helically in the same excluded sectional shape to mold a first lamination rubber member. In this case, the blending ratio of the second rubber material B depends upon the stepwise increase and the gradual increase of the volume of at least, the first rubber material A. In addition, the strip-like rubber and the strip-like blended rubber are sequentially wound helically while mutually overlapping at least, the edge parts in the width direction of the strip-like rubber and the strip-like blended rubber.</p> |
