Method and apparatus for extrusion production of large...

Details Method and apparatus for extrusion production of large... Method and apparatus for extrusion production of large...

B - Operations, Transporting

29

C

18/771

B29C 47/06 (2006.01) B29C 37/00 (2006.01) B29C 47/00 (2006.01) B29C 47/56 (2006.01) B29C 47/90 (2006.01)

Patent

CA 1224615

ABSTRACT OF THE DISCLOSURE Thermoplastic articles such as fenders, of large cross-sectional dimensions, may be made by extrusion without shrinkage voids by extruding a first stream of thermoplastic as a hollow profile, and extruding a second stream of molten thermoplastic by a second extruder and forcing same under pressure into the hollow profile to fill the voids of shrink- age on cooling.

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