| 摘要 |
PROBLEM TO BE SOLVED: To restrain a specific directional expansion in the period of foaming expansion. SOLUTION: The foamed body is made by blending short fiber 2 in a base material of synthetic rubber, and during the extrusion molding, by orientating the short fiber 2 in the extrusion direction: a foaming expansion of the foamed body, the short fiber 2 this body restrains from expanding in its orientation direction. |
