| 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} |
| 173.11 | DF | .~.~ Having three or more layers of at least two different compositions {1} |
| 173.12 | DF | .~.~.~ Melt extrusion (e.g., co-extrusion, etc.) {3} |
| 173.13 | | .~.~.~.~ Vinylidene chloride or fluoride containing layer |