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METHOD OF PRODUCING INTERFOLDED WEBS OF FLEXIBLE SHEET MATERIAL

  • US 3,817,514 A
  • Filed: 01/31/1972
  • Issued: 06/18/1974
  • Est. Priority Date: 06/01/1970
  • Status: Expired due to Term
First Claim
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1. In a method of producing interfolded webs of flexible sheet material, the steps of continuously longitudinally folding a first traveling web of the sheet material into a pair of overlying folds with each of the folds of a width of about half the original web width, continuously longitudinally applying to a first half of an unfolded width of a second traveling web the traveling so-folded first web, and then folding over the first web again to provide the first web in quarter folds and to interfold the mentioned first half of the second web, and subsequently folding a portion of the remaining width of the second web beneath the folds of the mentioned first web and first half of the second web.

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