US PATENT SUBCLASS 29 / 90.1-- .~ Of water laid fibrous article (e.g., paper)

US PATENT SUBCLASS 29 / 90.1
.~ Of water laid fibrous article (e.g., paper)

Current as of: June, 1999
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29 /	HD	METAL WORKING

90.01	DF	BURNISHING {4}
90.1		.~ Of water laid fibrous article (e.g., paper) {1}
90.2	DF	.~.~> Heated burnishing member {1}

DEFINITION

Classification: 29/90.1

Of water laid fibrous article (e.g., paper):

(under subclass 90) Process or apparatus for burnishing materials made by a paper making operation, i.e., depositing fibrous material from a slurry onto a foraminous screen or mold surface.

SEE OR SEARCH CLASS

162, Paper Making and Fiber Liberation,

205, for the combination of forming an endless web and subsequently subjecting it to pressure, subclasses 224+ for a process of forming an article and subsequently subjecting it to pressure, and subclass 288 for the combination of forming and burnishing means.

493, Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web, for the combination of bending, folding, creasing, assembling, i.e., a basic operation of Class 493 combined with burnishing. Search especially

271, for making a tube from a nonmetal sheet or web combined with minute size change of the formed tube and subclass 291 for making a nonmetal tube from a sheet or web combined with surface treatment. Search especially subclass 467 for surface treatment of a sheet or web other than burnishing. Burnishing, per se, of paper (or other material) is to be found in Class 29, subclasses 90.1+.