US PATENT SUBCLASS 264 / 173.18
.~.~.~ Having colorant added to material to be shaped or producing two diverse colored layers

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

165  DF  FORMING CONTINUOUS OR INDEFINITE LENGTH WORK {8}
171.1  DF  .~ Layered, stratified traversely of length, or multiphase macrostructure containing material (e.g., conjugate, composite, islands-in-sea, core-sheath, etc.) {8}
173.16  DF  .~.~ Melt co-extrusion (e.g., two layers, etc.) {4}
173.18.~.~.~ Having colorant added to material to be shaped or producing two diverse colored layers

DEFINITION

Classification: 264/173.18

HAVING COLORANT ADDED TO MATERIAL TO BE SHAPED OR PRODUCING TWO DIVERSELY COLORED LAYERS:

(under subclass 173.16) Process which includes (a) a step of incorporating a colorant (e.g., dye, pigment, etc.) directly in the shaping material such that an article is formed having at least one layer of nonrandom color, or (b) producing a layered article wherein each layer is of different color.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73+, for processes in which a random variegated effect is achieved during the molding or shaping operation.

78, for processes including dyeing of a shaped article or preform, or including a step of incorporating a dye susceptible material (i.e., precursor) in the shaping material and followed by subsequent exposure to a reactant for the dye susceptible material to produce the color (e.g., such as found in a coagulant bath, etc.).

132, for processes including the step of applying an indicia or design to the shaped article.

245+, for reshaping processes for producing composite structure with multicolored surface.