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Structure of interfolding machine

  • US 7,442,157 B2
  • Filed: 02/15/2007
  • Issued: 10/28/2008
  • Est. Priority Date: 02/18/2006
  • Status: Active Grant
First Claim
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1. Interfolding machine of sheet material for making a stack of interfolded sheets, comprising:

  • at least one web of material to interfold that is cut into sheets of predetermined length;

    means for partially overlapping said sheets in order to form an overlapped portion between two consecutive sheets, where said overlapped portion is a predetermined fraction of said sheet length;

    means for interfolding the sheets to form the stack;

    means for conveying the partially overlapped sheets in a zone set between said means for partially overlapping and the means for interfolding, andmeans for keeping constant the overlapped fraction of the sheets between said conveying means and the interfolding means.

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