Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With liberating or forming of particles
Patent
1979-09-10
1982-01-05
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With liberating or forming of particles
264122, 264328, B29F 100
Patent
active
043093744
ABSTRACT:
Fatty acid amide coated pigments are obtained and used to formulate with uncolored thermoplastic materials. The colors of the pigments are fully developed, and extremely high pigment loadings are obtained. The coated pigments are formed by admixing the pigment with melted fatty acid amide; solidifying the material by cooling it; grinding the material; and separating out the fines. The coated pigment's particles are compounded with thermoplastic materials by low shear means, such as, injection molding. An improved form of the coated pigments can be obtained by admixing the melted fatty acid amide, and the pigment; extruding the admixture to form a creamy mass; solidifying and forming the creamy mass by passing it through cold and forming rollers; grinding the resultant wafer-like material; and separating out the fines.
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Czaja Donald E.
Hall James R.
Plastic Molders Supply Co., Inc.
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