Process for using residual sludges from industrial painting...

Details Process for using residual sludges from industrial painting... Process for using residual sludges from industrial painting...

B - Operations, Transporting

29

J

18/1001, 117/43,

B29J 5/04 (1980.01)

Patent

CA 1155266

ABSTRACT The invention relates to a process for using residual aqueous sludge from painting in a spray-booth with a fibrous material to produce a fibre-reinforced thermoset panel. The water content of the sludge is reduced to a residual value not exceeding 35% by weight by mechanical working such as com- pressing, extruding or rolling. The obtained wet plastic product and the fibrous reinforcing material are associated together in a sludge: fibre weight ratio from about 1:4 to about 9:1 to form a heat-curable panel without addition of an extraneous heat-curable binder, and the panel is hot-pressed at an elevated temperature and during a time sufficient to at least partially heat-set the panel.

354763

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