Extrusion method for producing FD&C dyes

Details Extrusion method for producing FD&C dyes Extrusion method for producing FD&C dyes

1994-10-18

1996-04-16

Davis, Robert B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

26421112, B29C 4712

Patent

active

055079911

ABSTRACT:
A solution of substantially pure, chemically synthesized food dye is converted to a dustless and abrasion-resistant granular composition of high physical integrity which dissolves readily when intended for use. The conversion is accomplished by subjecting the dye to sequential processing operations including spray drying, mixture with water and extrusion under controlled rate and pressure. Optional, albeit preferred additional procedures include drying the product under controlled temperature following extrusion and vibration sifting the product following drying to obtain granules of approximate uniform size prefatory to packaging.

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