Solid state shear extrusion pulverization

Details Solid state shear extrusion pulverization Solid state shear extrusion pulverization

1993-10-28

1995-03-07

Han, Frances

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 17, 241 23, 241 65, 2412601, 241261, 366 85, 366 88, 366 89, B02C 2328

Patent

active

053950550

ABSTRACT:
A process and apparatus for pulverization of thermosetting, crosslinked thermoplastic and natural polymeric materials by applying normal and shear stresses by oppositely rotating meshing conical screws sufficient to form fine powder. The process may be conducted at relatively low temperatures, and in the case of many materials, at ambient or near ambient temperature and pressure conditions. The fine powder may be fluidized to aid in its discharge.

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