US PATENT SUBCLASS 264 / 535
.~.~ Including heating of previously formed parison to blow molding temperature

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

500  DF  DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY SHAPE, DISTORT, OR SUSTAIN WORK {14}
523  DF  .~ Including application of internal fluid pressure to hollow finite length parison to expand same into conformity with female mold part {10}
535.~.~ Including heating of previously formed parison to blow molding temperature

DEFINITION

Classification: 264/535

Including heating of previously formed parison to blow molding temperature:

(under subclass 523) Processes in which the cool preformed parison is reheated to a temperature where it may be shaped by differential fluid pressure.