Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 31, 2007
Patent Application Number
11012368
Date Filed
December 15, 2004
Patent Primary Examiner
Patent abstract
The present invention is a process and apparatus for conserving loss of heat while forming and crystallizing polymer particles in a liquid. The cooling liquid quenches the polymer during particle molding to facilitate shaping. The cooling liquid cools the polymer particles not below a temperature that allows adequate crystallization to occur. Cooling liquid is quickly switched with a warming liquid, so the temperature of the polymer is in the crystallization range and the heat of crystallization self-heats the polymer to a higher temperature.
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