US PATENT SUBCLASS 493 / 181
.~.~.~.~ Of flattened tubular blank


Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

51  DF  CONTAINER MAKING {2}
52  DF  .~ Rigid container (e.g., box, carton, cap, cup, etc.) {10}
162  DF  .~.~ Folding {7}
180  DF  .~.~.~ With means to advance work or product {2}
181.~.~.~.~ Of flattened tubular blank


DEFINITION

Classification: 493/181

Of flattened tubular blank:

(under subclass 180) Method or apparatus wherein a sheet or web workpiece has previously been formed into the shape of a tube having opposite walls pressed down to touch each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

269+, for formation of a tubular blank.