Apparatus and method for dehumidifying and drying resin pellets

Details Apparatus and method for dehumidifying and drying resin pellets Apparatus and method for dehumidifying and drying resin pellets

2006-10-10

2008-12-16

Gravini, S. (Department: 3749)

Drying and gas or vapor contact with solids

Apparatus

For diverse operations on treated material

C034S167000, C034S092000, C366S089000

Reexamination Certificate

active

07464485

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 means67adapts to operate in a first drying mode of controlling the heating operation of the first heating member25for heating longitudinally divided regions of the first cylinder5section to produce differentiated respective heating effects and that of the second heating member31for uniformly heating the second cylinder7section 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 member25and that of the second heating member31for uniformly heating the first and second cylinder5,7sections so as to drying the supplied crystallized resin pellets CRP.

REFERENCES:
patent: 3685804 (1972-08-01), Stansfield
patent: 4501498 (1985-02-01), McKelvey
patent: 5597525 (1997-01-01), Koda et al.
patent: 6328919 (2001-12-01), Pham et al.
patent: 6790025 (2004-09-01), Yamaguchi et al.
patent: 2003/0059491 (2003-03-01), Konishi
patent: 3233419 (2001-09-01), None
patent: 2005-028683 (2005-02-01), None

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