Method for plastics recycling

Details Method for plastics recycling Method for plastics recycling

1991-06-18

1993-08-17

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210787, 2105322, 209 2, 209132, 241 19, 241 21, 241 23, 264 37, B03B 532

Patent

active

052366030

ABSTRACT:
The present invention provides improved systems for plastic recycling. In a first embodiment for recycling HDPE milk jugs, a cold water wash step is used to remove bacteria-generated odor from milk jugs. In a second embodiment, a system for recovering PET and HDPE from soda bottles is disclosed. The separation stage utilizes a three-compartment sump to separate HDPE using water as the medium, and two further stages using heavier media for separation of PVC cap liners and aluminum from the PET.

REFERENCES:
patent: 4036441 (1977-07-01), Basten et al.
patent: 4319998 (1982-03-01), Anderson
patent: 4379525 (1983-04-01), Nowick et al.
patent: 4830188 (1989-05-01), Hannigan et al.

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