US PATENT SUBCLASS 156 / 474
.~.~.~ Pleating means

Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

349  DF  SURFACE BONDING MEANS AND/OR ASSEMBLY MEANS THEREFOR {34}
443  DF  .~ With bending, folding, winding, or wrapping means {5}
459  DF  .~.~ For an indefinite or running length flexible web {6}
474.~.~.~ Pleating means

DEFINITION

Classification: 156/474

(under subclass 459) Apparatus having means causing the web to be progressively and repeatedly folded back on itself to produce a zig-zag folded product.

(1) Note. The pleated product is generally distinguished in that the faces of the folded product are in contact with one another as distinguished from a corrugated product in which the walls of the corrugations are spaced.