Die design for underwater pelletization of high melt flow...

Details Die design for underwater pelletization of high melt flow... Die design for underwater pelletization of high melt flow...

B - Operations, Transporting

29

B

18/722

B29B 9/06 (2006.01) B29B 7/88 (2006.01) B29C 47/30 (2006.01)

Patent

CA 1311338

ABSTRACT OF THE DISCLOSURE High melt flow rate polymers are pelletized with greater uniformity and less malformed pellets from underwater extrusion processes by die orifices having a narrow preland sufficient to evenly distribute the polymer followed by a wide final hole that forms a polymer strand sufficient to avoid deformation by water currents during pelletization.

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