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METHOD OF AND APPARATUS FOR MAKING PLEATED AND FOLDED ARTICLES FROM A WEB

  • US 3,784,186 A
  • Filed: 06/24/1971
  • Issued: 01/08/1974
  • Est. Priority Date: 06/24/1971
  • Status: Expired due to Term
First Claim
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1. An apparatus for forming longitudinally pleated and transversely folded articles from a continuous web, said apparatus comprising means for continuously feeding said web along a path of travel in a first direction, means for transversely bowing said web to have a substantially curved transverse cross section, said feed means continuously moving said web after bowing along a path in a second substantially vertical and downward direction at an angle to said first direction, means for pleating said web by forcing portions of the web at spaced locations to project normal to said second direction to form progressively increasing widths for each pleat while moving the pleats along radial lines toward a predetermined focal point, means for forcing said pleats together at said focal point to form a pleated web while said web is continuing to travel downwardly, means for transversely folding said pleated web to provide a series of overlapped pleated plies for the article, means including an endless cutting band having a thin sharp cutting edge for severing said pleated web while it is traveling at predetermined intervals to provide a predetermined and equal number of overlapped plies for each of said pleated and folded articles, said endless band being in a plane disposed at an acute angle to the vertical with one run thereof closer to the pleated web and movable in an orbital path to move laterally to engage said pleated web to travel in a substantially rectilinear downward movement with said pleated web and to retract laterally from the path of said pleated web while the other run remains spaced from cutting engagement with said pleated web and support means for shifting said cutting band along the orbital path from a position spaced from said pleated web into engagement therewith for traveling with said pleated web downwardly in the direction of pleated web travel and at substantially the same speed of pleated web travel to sever said pleated web transversely and then retracting from said pleated web.

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