US PATENT SUBCLASS 264 / 174.11
.~.~.~ Natural rubber or elastomer containing layer

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}
174.11.~.~.~ Natural rubber or elastomer containing layer

DEFINITION

Classification: 264/174.11

Natural rubber or elastomer containing layer:

(under subclass 173.16) Processes wherein at least one of the co-extruded layers contains an elastomer or a natural rubber.