Reclaiming waste plastics

Details Reclaiming waste plastics Reclaiming waste plastics

1975-07-07

1977-07-05

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, 528489, 528503, C08J 1104

Patent

active

040339076

ABSTRACT:
In reclaiming thermoplastic materials, process improvements wherein ground particles having molecular orientation are heated sufficiently to relieve orientation stresses and reduce surface area, thereby facilitating subsequent washing, separating and melt processing steps. When refabrication into other articles is intended, the materials can be exposed to a hot caustic solution to eliminate bacteria and mold growth.

REFERENCES:
patent: 3344212 (1967-09-01), Francis
patent: 3607999 (1971-09-01), Corbett et al.
patent: 3652466 (1972-03-01), Hittel et al.
patent: 3804811 (1974-04-01), Rose et al.
patent: 3852046 (1974-12-01), Brown
Sweeting, The Science and Technology of Polymer Films, Interscience Publishers, N.Y., (1968), pp. 232, 233, 243, 247, 248, & 249.
Holman et al., Bureau of Mines Technical Progress Report, "Processing the Plastics from Urban Refuse," Feb. 1972.
Holman et al., Bureau of Mines Report of Investigations, 1974, "Recycling of Plastics from Urban and Industrial Refuse," (1974).

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