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Method and apparatus for forming tow-based absorbent structures with a single casing sheet

  • US 6,923,926 B2
  • Filed: 03/24/2003
  • Issued: 08/02/2005
  • Est. Priority Date: 01/16/2002
  • Status: Expired due to Fees
First Claim
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1. An apparatus for forming absorbent structures having a single casing sheet, the apparatus comprising:

  • a tow supply mechanism for providing tow material;

    a particulate matter supply mechanism for providing particulate matter;

    a casing sheet supply mechanism for providing casing sheet material;

    a vacuum draw roll comprising a foraminous center surface, the foraminous center surface having a width defined by a first edge and a second edge and being rotatable about a first axis, the vacuum draw roll being positioned to receive the tow material, the particulate matter and the casing sheet material to form a open core composite supply;

    one or more angled surfaces positioned to create one or more obtuse angles in the open core composite supply; and

    , one or more folders to further fold the one or more obtuse angles in the open core composite supply to form a folded core composite supply.

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