US PATENT SUBCLASS 264 / 211.18
.~.~.~.~ Plural treatment stages or zones

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}
176.1  DF  .~ Shaping by extrusion {11}
211.12  DF  .~.~ Processing or treatment after extrusion {1}
211.13  DF  .~.~.~ Contact of extrudate with fluid other than ambient air {4}
211.18.~.~.~.~ Plural treatment stages or zones

DEFINITION

Classification: 264/211.18

Plural treatment stages or zones:

(under subclass 211.13) Processes wherein the extrudate is treated in at least two different zones or stages, at least one of the treatments being with a fluid.