Apparatus and method for dehumidifying and drying resin pellets
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United States of America Patent
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Dec 16, 2008
Grant Date -
Jun 14, 2007
app pub date -
Oct 10, 2006
filing date -
Dec 12, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for dehumidifying and drying resin pellets that can efficiently dry both non-crystallized resin pellets and crystallized resin pellets, the apparatus being adapted to downsizing. A control means 67 adapts to operate in a first drying mode of controlling the heating operation of the first heating member 25 for heating longitudinally divided regions of the first cylinder 5 section to produce differentiated respective heating effects and that of the second heating member 31 for uniformly heating the second cylinder 7 section so as to crystallize the supplied non-crystallized resin pellets NCRP and subsequently drying them and in a second drying mode of controlling the heating operation of the first heating member 25 and that of the second heating member 31 for uniformly heating the first and second cylinder 5,7 sections so as to drying the supplied crystallized resin pellets CRP.
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