Extrusion die for a blow head for making blown plastic films

Details Extrusion die for a blow head for making blown plastic films Extrusion die for a blow head for making blown plastic films

B - Operations, Transporting

29

C

18/521

B29C 49/00 (2006.01) B29C 47/20 (2006.01)

Patent

CA 1246819

ABSTRACT OF THE DISCLOSURE An extrusion die for a blow head for making blown plastic films comprises inner and outer rings, which are made of a ferrous material, particularly steel, and define between them an annular orifice. Those surfaces of the inner and outer rings which define the die orifices are covered by a layer consisting of a metallic material having a higher thermal conductivity than steel.

491393

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