US PATENT SUBCLASS 53 / 373.7
.~.~ With means to heat or cool seam

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

285  DF  CLOSING PACKAGES AND FILLED RECEPTACLES {7}
373.2  DF  .~ By means adapted to engage outturned seam of package cover {6}
373.7.~.~ With means to heat or cool seam {5}
373.8  DF  .~.~.~> Spaced from cover during heating or cooling {1}
374.2  DF  .~.~.~> With nonplanar sealing surface
374.3  DF  .~.~.~> With means to advance package during closing {3}
374.8  DF  .~.~.~> With package stationary during closing {2}
375.3  DF  .~.~.~> Means to cool seam

DEFINITION

Classification: 53/373.7

With means to heat or cool seam:

(under subclass 373.2) Apparatus having means to apply to or remove from the "opposing surfaces" thermal energy.

(1) Note. The abutting faces of the cover may be heated to seal the seam or may be cooled to cause the setting of adhesive previously applied thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

127, for apparatus for packaging with means to heat or cool the contents.

370.7, for apparatus for applying heat to or removing heat from a pleated cover overhang.

376.6, for apparatus for applying or removing heat from a multiple flap closure seam.

380.4, for flap holders having heating or cooling means. 463, for methods of encasing involving heat sealing.

477, for methods of heat sealing closure seams.

479, for a method of closing a preformed nonfreestanding container by heat sealing.

SEE OR SEARCH CLASS

219, Electric Heating,

200+, for electric heaters, per se, for heating cover seams.