Method for preparing covering sheets or strips in crepe rubber,

Details Method for preparing covering sheets or strips in crepe rubber, Method for preparing covering sheets or strips in crepe rubber,

1982-06-30

1983-12-20

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264282, 264284, 264293, B32B 100

Patent

active

044215851

ABSTRACT:
The present invention relates to a method for preparing covering sheets or strips in crepe rubber, wherein the creped appearance is retained in the finished product such as shoes made from such sheets or strips, wherein the pieces of rubber are introduced between the cylinders of a mixer of which the relative tangential speed and the variation of the space therebetween ae adjusted to obtain in cold conditions a natural crepe rubber without the arrangement of the molecules in the rubber being broken; the tongue or coagulum thus obtained is run between the cylinders as different ingredients (sulphur, coloring agents, accelerator) are sprinkled over its surface; then said coagulum thus filled and creped is calendered until the required thickness is reached evenly; said coagulum is finally applied to mounting the product such as a shoe, which is thereafter vulcanized in an autoclave.

REFERENCES:
patent: 4190572 (1980-02-01), Nishimura
patent: 4247513 (1981-01-01), Liv

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