Metal working – Scale remover or preventor – Scraper or scalper
Patent
1992-04-29
1993-04-06
Eley, Timothy V.
Metal working
Scale remover or preventor
Scraper or scalper
51281SF, 51 74R, B21C 4300
Patent
active
051991438
ABSTRACT:
Plastics having coatings are reused by first removing the coatings as by shaving or treatment with solvents or jets of hot liquid or vapor that melt the coatings and blow them away. Thin plastic pieces like compact discs are passed through surface milling apparatus which shaves off the coatings. After the shaving, the discs are brushed while rotating around their centers.
REFERENCES:
patent: 2189578 (1940-02-01), Crouse et al.
patent: 4992223 (1991-02-01), Nelson
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