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Method for removing contaminants from plastic resin
   
Document Number
US Patent 7462685
Issued Date
December 9, 2008
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Inventors
Bohnert; George W. (Harrisonville, MO)
Hand; Thomas E. (Lee's Summit, MO)
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Abstract
A resin recycling method that produces essentially contaminant-free synthetic resin material in an environmentally safe and economical manner. The method includes receiving the resin in container form. The containers are then ground into resin particles. The particles are exposed to a solvent, the solvent contacting the resin particles and substantially removing contaminants on the resin particles. After separating the particles and the resin, a solvent removing agent is used to remove any residual solvent remaining on the resin particles after separation.
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Number of Claims:
47
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Published
December 9, 2008
Application Number
11/426,503
Filed
June 26, 2006
US Classification
528/480   422/131
Int'l Classification
C08F   6/00   (20060101)   B01J   19/00   (20060101)  
Parent Case
CROSS REFERENCE TO RELATED APPLICATION This application is a continuation-in-part (CIP) of U.S. patent application Ser. No. 11/096,880, filed Apr. 1, 2005, which is incorporated by reference.
USPTO Field of Search
422/131   528/480  
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