US PATENT SUBCLASS 493 / 205
.~.~.~ Heat sealing by means moving with work

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}
205.~.~.~ Heat sealing by means moving with work

DEFINITION

Classification: 493/205

Heat sealing by means moving with work:

(under subclass 189) Method or apparatus wherein the sheet or web workpiece is adapted to move during application of thermal energy thereto, and wherein the means for raising the thermal level includes a surface engaging the workpiece and moving therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

199+, for making a pliable container with cutting, breaking, tearing, or abrading and with heat sealing by a heat sealing means moving with the work.

203, for making a pliable container with cutting, breaking, tearing, or abrading and with heat sealing by a composite means moving with the work.