US PATENT SUBCLASS 162 / 17
.~ Continuous chemical treatment or continuous charging or discharging

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


162 /   HD   PAPER MAKING AND FIBER LIBERATION

1  DF  PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL {33}
17.~ Continuous chemical treatment or continuous charging or discharging {2}
18  DF  .~.~> With compression, squeezing or compacting of fibrous material during charging
19  DF  .~.~> Plural diverse stage treatment

DEFINITION

Classification: 162/17

(under subclass 1) Processes in which the fibrous material passes substantially continuously into and out of the treating zone.

(1) Note. The raw fibrous material is continuously fed to, flowed through and discharged from the treating zone with the material normally being admitted and discharged at the same rates. "Continuous batch" processes, characterized by the passage of baskets filled with fibrous material, through a

treating solution, are also included.