US PATENT SUBCLASS 264 / 328.7
.~.~.~.~ Including changing mold size or shape during injection or between multiple stages of injection

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}
328.7.~.~.~.~ Including changing mold size or shape during injection or between multiple stages of injection

DEFINITION

Classification: 264/328.7

Including changing mold size or shape during injection or between multiple stages of injection:

(under subclass 328.1) Processes in which the physical conformation of the mold cavity is altered while injecting material or between stages of injecting material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

45.2, for processes of forming a multipart or composite article using an expandable mold.