Process for the separation of plastics

Details Process for the separation of plastics Process for the separation of plastics

B - Operations, Transporting

03

B

B03B 1/00 (2006.01) B29B 17/02 (2006.01) C08J 11/00 (2006.01) C08J 11/06 (2006.01)

Patent

CA 2045443

ABSTRACT Thermoplastic materials are separated and recovered, according to the present invention, utilizing a process wherein a mixture of the thermoplastic material to be recovered and one or more contaminants are simultaneously heated and agitated. The mixture is heated to the temperature at which the thermoplastic will adhere to itself, but at which the contaminant has not become tacky. Impacting thermoplastic particles agglomerate, while the contaminant particles do not adhere to other contaminant particles or to the thermoplastic particles. The resulting mixture is passes through a series of screens of increasing mesh size to separate the larger thermoplastic particles from the smaller contaminant particles. 16

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