US PATENT SUBCLASS 493 / 133
.~.~.~ Including 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}
52  DF  .~ Rigid container (e.g., box, carton, cap, cup, etc.) {10}
121  DF  .~.~ Securing {6}
133.~.~.~ Including heat sealing {2}
134  DF  .~.~.~.~> By direct application of fluid
135  DF  .~.~.~.~> Of moving work

DEFINITION

Classification: 493/133

Including heat sealing:

(under subclass 121) Method or apparatus including raising the thermal level of a surface of a workpiece and thereby causing that surface to be fastened to another surface of a workpiece.

(1) Note. Included herein is both "heat sealing" by fusion of the work surface and heat drying of adhesive.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41, for making a cigarette filter including application of heat to secure the wrapper thereto.

129+, for making a rigid container with application of adhesive and heat sealing.

189+, for making a pliable container including heat sealing.

274, for making a tube with coating and heating. 332, for making an article of this class, generally including application of adhesive and heating or drying.

341, for an operation of this class including heat sealing combined with cutting, breaking, tearing, or abrading.

393, for securing a sheet or web workpiece and another workpiece by application of heat.