Tube rolling device

  • US 20080160123A1
  • Filed: 12/28/2006
  • Published: 07/03/2008
  • Est. Priority Date: 12/28/2006
  • Status: Active Grant
First Claim
Patent Images

1. A method of forming filter tubes comprising:

  • delivering a filter element to a flute on a first drum, the flute having a vacuum for securing the filter element thereto;

    axially engaging opposite ends of the filter element with first and second tube forming rollers;

    delivering a continuous web with a glue pattern thereon to a second drum;

    cutting the web into discrete pieces;

    delivering at least a portion of the web piece to at least a portion of the filter element in the flute of the first drum;

    rolling the web piece around the filter element and the tube forming rollers to form a cylindrically shaped structure; and

    axially disengaging the tube forming rollers to produce a filter tube with hollow ends and a centrally positioned filter element.

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