Method and plant for separating polymeric materials

Details Method and plant for separating polymeric materials Method and plant for separating polymeric materials

2006-03-21

2006-03-21

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

C209S003000, C241S024180, C241S024280, C241S023000

Reexamination Certificate

active

07014132

ABSTRACT:
A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third density separation step (M, W), and optionally a fourth density separation step (Ga, Gb). Further less essential steps such as wetting (A), grinding (D), air flow separation (K), drying (I), electrostatic sorting (Z) and optional sorting (Za) steps may also be carried out to achieve optimized and refined separation. Polymeric materials from refuse or crushed motor vehicles may thus be separated, and polyethylene, polypropylene, polystyrene and acrylonitrile-butadiene-styrene resins may be recycled.

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