Method and apparatus for manufacturing an etched extrusion

Details Method and apparatus for manufacturing an etched extrusion Method and apparatus for manufacturing an etched extrusion

B - Operations, Transporting

29

C

B29C 47/88 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2172760

A method of manufacturing an extrusion having the appearance of being etched, including the steps of extruding a thermoplastic material to produce a hot extrusion, and contacting the extrusion, while the extrusion is still hot, with a mixture of at least two fluids having different thermal conductivities so that the extrusion develops an uneven outer surface due to different rates of shrinkage caused by the different thermal conductivities.

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