| 摘要 |
PROBLEM TO BE SOLVED: To enhance cooling efficiency and also to attain improvement of productivity and simplification of equipment. SOLUTION: Rubber is charged and kneaded in a kneading process and then extruded by an extruder and a rubber sheet M thus prepared is wound on cooling rolls 3A-3C having a plurality of projecting parts 1 on the surfaces and composed in one stage at least, and cooled down. A rise angle of the projecting part 1 is 30-60 degrees and the height of the projecting part 1 is 20-80% of the thickness of the rubber sheet. |
