Extrusion of plastic material

Details Extrusion of plastic material Extrusion of plastic material

A - Human Necessities

22

C

99/90

A22C 7/00 (2006.01)

Patent

CA 1323795

ABSTRACT * IMPROVEMENTS IN THE EXTRUSION OF PLASTIC MATERIAL * Food products particularly of meat are extruded cased under pressure. The extrusion pressure, and the energy in the extrudate, makes the circular cross-section the only stable one on emergence from the extrusion head. In accordance with the present invention two unstable shapes, D-shaped as described are extruded each cased from its own extrusion head. The heads are disposed closely adjacent back to back to as to have a generally circular overall profile. An outer casing is fitted over the two heads. On extrusion the two D-shaped pieces abut one another and the outer casing to preserve their shapes until stabilised by freezing.

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