Process for production of powder paints

Details Process for production of powder paints Process for production of powder paints

1974-02-06

1976-03-02

Custer, Jr., Granville Y.

Solid material comminution or disintegration

Processes

With solidifying, consolidating or shaping

B02C 2100

Patent

active

039413152

ABSTRACT:
In an extrusion process for making powder paints from a series of batch blend units comprising resinous binders and pigmentary solids, interbatch contamination can be suppressed by using a same first portable (hopper) vessel for transporting, temporarily storing, and feeding extruder feed from like particular batch blend units and using a same second portable (hopper) vessel for collecting, transporting, and temporarily storing comminuted extrudates corresponding to said like particular batch blend units and feeding such comminuted extrudates into packages, especially when said first portable vessel is used for part or all of the blending operation. Like extrudates, corresponding to particular batch blend units, can be substantially completely hardened by cooling prior to their comminuting, and collected in, transported to, and temporarily stored for final comminution in a same third portable (hopper) vessel. Alternatively, such particular extrudates can be comminuted before they are substantially completely hardened, then completely hardened subsequently by cooling.

REFERENCES:
patent: 2461089 (1949-02-01), Smidth
patent: 2548909 (1951-04-01), Ryden
patent: 2917780 (1959-12-01), Petry
patent: 3643874 (1972-02-01), Franz et al.

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