Process for production of recycled plastic products

Solid material comminution or disintegration – Processes – With application of fluid or lubricant material

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241 20, 241 2428, 241 29, 241DIG38, B02C 1912, B02C 2308

Patent

active

055668895

ABSTRACT:
Disclosed is a process for the production of a recycled plastic product from varnished plastic parts by multistagedly grinding but not pulverizing while at the same time subjecting same to a stretching treatment during the pulverizing step to loosen substantially completely all of the varnish sticking thereto. The resulting plastic and varnish particles are separated and thereafter packaged, typically, in the form of granulate. The resulting thermoplastic plastic recycled material does not contain any visible inclusions of more than 0.25 mm.sup.2 of varnished particles in the sheet test.

REFERENCES:
patent: 4809854 (1989-03-01), Tomaszek
patent: 4830188 (1989-05-01), Hannigan et al.
patent: 4981876 (1991-01-01), Grimmer
patent: 5011087 (1991-04-01), Richardson et al.
patent: 5183212 (1993-02-01), Boo et al.
patent: 5297741 (1994-03-01), Zurn et al.
patent: 5323971 (1994-06-01), Nishibori et al.
"Wiederverwertung von lackierten PP-EPDM-Stossfangern", pp. 48-52, written by Bruno Rapp, in Plastverarbeiter, 42, 1991.
Modern Plastics International, 23, No. 2, p. 13-14 (Feb. 1993), Lausanne, Switzerland article.

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