Method for manufacturing low density rubber foamed body

Details Method for manufacturing low density rubber foamed body Method for manufacturing low density rubber foamed body

B - Operations, Transporting

29

H

18/674

B29H 7/20 (1980.01)

Patent

CA 1171620

- 22 - Abstract of the Disclosure A method for manufacturing a low density rubber foamed body is provided which comprises the steps of forming a sheet from a mixture of 100 parts by weight of natural rubber or a synthetic rubber, 10 to 80 parts by weight of a foaming agent, and 0.5 to 15% by weight of a crosslinking agent; enclosing said sheet within a mold and heating said mold under pressure from the exterior to thereby foam said sheet; forcibly cooling said mold; and releasing a foamed body from said mold. When 10 to 60 parts by weight of a thermoplastic synthetic resin are further added to the mixture, a rubber foamed body of still lower density and lower shrinking property is obtained.

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