US PATENT SUBCLASS 53 / 548
.~ With closing of web between package units

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

545  DF  PROGRESSIVELY SEAMED COVER WEB OR WEB FOLDS {3}
548.~ With closing of web between package units {3}
549  DF  .~.~> By twisting
550  DF  .~.~> Longitudinal tube formed from single web {1}
553  DF  .~.~> Plural webs {2}

DEFINITION

Classification: 53/548

With closing of web between package units:

(under subclass 545) Apparatus including means to periodically form a seam transversely of the web to thereby isolate the contents into package units.

(1) Note. For this and indented subclasses the transverse seam may be formed prior to the longitudinal seam.

(2) Note. For this and indented subclasses the means for forming the transverse seam may also simultaneously sever the cover along the seam.