Automobile shredder residue-synthetic plastic material composite

Details Automobile shredder residue-synthetic plastic material composite Automobile shredder residue-synthetic plastic material composite

1994-07-12

1996-04-02

Dawson, Robert A.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With liberating or forming of particles

264118, 264121, 264122, 264126, 264DIG69, 4289033, B29C 4700, B29B 1702

Patent

active

055037887

ABSTRACT:
A method is provided for processing a mixture raw automobile shredder residue, and virgin and/or contaminated synthetic plastic material, e.g., raw post consumer plastic waste. By means of this method, automobile shredder residue produced by a conventional automobile shredder is formed into a first stream by being ground in a first granulating zone to a reasonable small granular size using conventional equipment. A second stream comprising virgin and/or contaminated synthetic plastics material is ground in a second granulating zones. The two streams are combined to provide a processable mixture. The processable mixture is introduced into a high intensity, mixer. The processable mixtures transformed into a semi-molten discharge stream by the kinetic energy imparted to the processable mixture by the mixer are simultaneously vented from the mixer. The semi-molten mixture emerging from the mixer is then introduced into an extruder or press where it is formed into a mass of desired shape, and cooled. This method allows for the production of useful, shaped masses from two different classes of materials which have been otherwise treated as waste.

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