264 / | HD | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
405 | DF | DIRECT APPLICATION OF ELECTRICAL OR WAVE ENERGY TO WORK (E.G., ELECTROMAGNETIC WAVE, PARTICULATE, MAGNETIC, INDUCTION HEAT, SONIC, ELECTROSTATIC ENERGY, ETC.) {26} |
435 | .~ Molecular aligning or molecular orientating (e.g., poling, etc.) {1} | |
436 | DF | .~.~> Producing permanently polarized dielectric (e.g., electret, etc.) |