Process and apparatus for removing volatiles evolved from...

Details Process and apparatus for removing volatiles evolved from... Process and apparatus for removing volatiles evolved from...

B - Operations, Transporting

29

C

18/718

B29C 47/76 (2006.01) B29C 47/12 (2006.01)

Patent

CA 1124972

ABSTRACT OF THE DISCLOSURE:_ In a process for removing volatile constituents which are evolved from a plastic melt when said melt is extruded from apparatus having means to melt said plastic through a heated extrusion die orifice and which escape into open air surrounding said extrusion die orifice, the im- provement wherein the volatile constituents are drawn off immediately as they are evolved together with said air sur- rounding said extrusion die orifice through at least one suction orifice located in the immediate neighborhood of said die orifice and wherein the air drawn off and the volatile constituents therein are heated immediately after entering said suction orifice by the means used to melt said plastic melt. And an apparatus to carry out this process.

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