US PATENT SUBCLASS 493 / 202
.~.~.~.~.~.~ Including work advance during heat sealing

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}
186  DF  .~ Pliable container (e.g., bag, envelope, etc.) {9}
189  DF  .~.~ Including heat sealing {9}
199  DF  .~.~.~ And cutting, breaking, tearing, or abrading {2}
200  DF  .~.~.~.~ At separate station from heat sealing {1}
201  DF  .~.~.~.~.~ With means to advance work or product {1}
202.~.~.~.~.~.~ Including work advance during heat sealing

DEFINITION

Classification: 493/202

Including work advance during heat sealing:

(under subclass 201) Method or apparatus wherein the thermal level of the workpiece surface is raised to effect securement of that surface with another surface of said workpiece as the workpiece is in motion.