US PATENT SUBCLASS 264 / 328.17
.~.~.~.~ Pretreatment or preparation of charge material

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

239  DF  MECHANICAL SHAPING OR MOLDING TO FORM OR REFORM SHAPED ARTICLE {10}
299  DF  .~ Shaping against forming surface (e.g., casting, die shaping, etc.) {10}
319  DF  .~.~ Applying heat or pressure {6}
328.1  DF  .~.~.~ Introducing material under pressure into a closed mold cavity (e.g., injection molding, etc.) {9}
328.17.~.~.~.~ Pretreatment or preparation of charge material {2}
328.18  DF  .~.~.~.~.~> Mixing of filler, dye, or pigment
328.19  DF  .~.~.~.~.~> Including feeding to accumulator

DEFINITION

Classification: 264/328.17

Pretreatment or preparation of charge material:

(under subclass 328.1) Processes in which the material to be molded is treated to facilitate the subsequent molding process.