Method of making powder from rubber and vulcanization products
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United States of America Patent
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-
Aug 26, 1986
Grant Date -
N/A
app pub date -
Nov 30, 1984
filing date -
Nov 30, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a method wherein the source material, rubber or vulcanization products is pulverized in an extruder wherein it is first compressed by a force of 0.2 to 0.7 MPa, then subjected simultaneously to a pressure ranging from 0.2 to 50 MPa and a shear force ranging from 0.03 to 5 N/mm.sup.2 while heating the material to a temperature ranging from 80.degree. to 250.degree. C. and then cooling said material to a temperature ranging from 15.degree. to 60.degree. C. The source materials can be used rubber goods, such as used tires and rejects of tire industry, footwear and industrial rubber production.
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