04225547 is referenced by 41 patents and cites 3 patents.

This application relates to a paste extrusion process using a ram type extruder wherein at least one, preferably both, of the die and mandrel of the extruder are rotated, in opposite directions when both are rotated. In preferred embodiments, the material being extruded is polytetrafluoroethylene, the mandrel has a smooth surface and the end portion of the die is heated.

Title
Extrusion process of polytetrafluoroethylene tubing materials and apparatus therefor
Application Number
750318
Publication Number
4225547
Application Date
September 22, 1978
Publication Date
September 30, 1980
Inventor
Koichi Okita
Osaka
JP
Agent
Sughrue Rothwell Mion Zinn and Macpeak
Assignee
Sumitomo Electric
JP
IPC
B29F 3/08
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