US PATENT SUBCLASS 162 / 216
.~.~.~ Mechanical treatment of slurry in head box or approach flow

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

100  DF  PROCESSES AND PRODUCTS {31}
202  DF  .~ Running or indefinite length work forming and/or treating processes (e.g., web) {6}
212  DF  .~.~ Directing slurry into association with mold {4}
216.~.~.~ Mechanical treatment of slurry in head box or approach flow

DEFINITION

Classification: 162/216

(under subclass 212) Processes in which the slurry is subjected to a mechanical treatment directly before application to the mold surface.

(1) Note. In this subclass may be found, for example, processes for rectifying the stock in the head box or subjecting it to mechanical vibration just before application to the mold.

SEE OR SEARCH THIS CLASS, SUBCLASS:

208, for processes for treating the stock on the mold surface.

341, for apparatus for treating the slurry in the head box or approach flow channel.