US PATENT SUBCLASS 162 / 224-- .~.~.~ Heat and/or mechanical pressure

US PATENT SUBCLASS 162 / 224
.~.~.~ Heat and/or mechanical pressure

Current as of: June, 1999
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162 /	HD	PAPER MAKING AND FIBER LIBERATION

100	DF	PROCESSES AND PRODUCTS {31}
218	DF	.~ Article forming processes (pulp molding) {7}
221	DF	.~.~ Treatment subsequent to removal from forming mold {3}
224		.~.~.~ Heat and/or mechanical pressure {1}
225	DF	.~.~.~.~> Boards or sheets

DEFINITION

Classification: 162/224

(under subclass 221) Processes including the application of heat and/or mechanical pressure to the article after removal from its original forming means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

223, for processes in which the pressure causes a change in overall configuration (other than mere decrease in thickness) of the article.

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, appropriate subclasses for processes under the class definition, for shaping or molding which may involve reshaping of a rewetted fibrous article.

493, Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web, for shaping a dry paper article by means of dies, and see the notes to the class definition thereof.