US PATENT SUBCLASS 264 / 172.13
.~.~.~ Islands-in-sea (i.e., discontinuous phase in continuous phase)

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}
172.11  DF  .~.~ Producing composite strand, filament, or thread {6}
172.13.~.~.~ Islands-in-sea (i.e., discontinuous phase in continuous phase)

DEFINITION

Classification: 264/172.13

Islands-in-sea (i.e., discontinuous phase in continuous phase):

Processes under subclass 172.11 directed to shaping a composite strand, filament or thread having a discontinuous phase material (island) and a continuous phase material (sea), usually of different composition.

(1) Note. The island phase material usually has a different melt index than the sea phase material. Extrusion or melt spinning are common shaping methods utilized in this subclass.