US PATENT SUBCLASS 53 / 438
.~.~.~ Before association with cover material

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

396  DF  METHODS {22}
428  DF  .~ With contents treating {7}
436  DF  .~.~ Compacting or stretching {2}
438.~.~.~ Before association with cover material {1}
439  DF  .~.~.~.~> By simultaneously conveying and compressing

DEFINITION

Classification: 53/438

Before association with cover material:

(under subclass 436) Methods in which the crowding forces are applied to the contents material prior to association of the contents material with the cover.

SEE OR SEARCH THIS CLASS, SUBCLASS:

529, for corresponding apparatus.