Gala Industries. Inc.

Mark Anthony Lythgoe

A pre-expanded hard shell thermoplastic foam pellet is made by controlling the temperature of the melt exiting a die plate in an underfluid pelletizer, and by controlling the temperature and pressures of the cooling fluid as the pellet flows from the cutting chamber through the slurry line toward a centrifugal dryer. The process and apparatus used for controlling the above parameters is described in conjunction with making the pellets. The pellets thus formed may have a generally spherical shape, or they may have odd, irregular shapes with foam hemorrhages protruding therefrom, depending on the conditions during pre-expansion.

Method and apparatus for forming an expandable foam pellet having a hard outer shell by underwater pelletizing, and expandable foam pellets formed thereby

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Eagle Rock, VA, United States of America

Mark Anthony Lythgoe