Method and equipment for the manufacture of variegated detergent bars
AssigneeColgate-Palmolive Company
InventorAlessandro D'Arcangeli
Life of this patent
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Abstract
Variegated detergent bars are made by mixing together pieces of soaps of contrasting colors in a vacuum zone and plodding the mixture in such manner as to fuse the different soaps together but maintain colors separate, thereby producing a desired pattern therein, preferably resembling marble. The pattern is controllable by variations of the proportions of material charged, plasticities thereof, speeds of the worms, design of the compression-extrusion head and preferably, by extruding the soaps through small openings in a plate after the final plodder worm, cutting the extrudates and imparting transverse or radial motions to them before final extrusion. Also described are plodding and extruding apparatuses utilized to practice the variegating process.
Claims1
Apparatus for manufacturing a variegated detergent bar which comprises:
- a. first detergent plodding means,
- b. second detergent plodding means,
- c. a vacuum chamber communicating with said first and second plodding means,
- d. a final third plodding means located below and communicating with said vacuum chamber,
- e. said final plodding means including a mixing worm having a predetermined diameter
- f. means for regulating the rate of feed to said final plodding means to leave from 30 to 70 percent of said worm immediately below said vacuum chamber uncovered during operation,
- g. extrusion means including a pressure plate with a plurality of holes located at the downstream end of said final third plodder means.
- h. rotating and cutting means disposed downstream from said extrusion means for imparting a transverse or radial motion to detergent passing through said pressure plate and cutting extruded detergent to desired length,
- i. compression means disposed downstream from said rotating and cutting means,
- j. said compression means including a chamber having a length less than one half of said predetermined diameter of said worm and,
- k. final extrusion means disposed downstream from said compression means for forming said detergent into bar shape.
Dependencies are inferred from the claim text.