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Method and apparatus for making absorbent structures having divided particulate zones

  • US 5,879,751 A
  • Filed: 12/18/1995
  • Issued: 03/09/1999
  • Est. Priority Date: 12/18/1995
  • Status: Expired due to Term
First Claim
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1. A method of making an absorbent structure, said method comprising the steps of:

  • (a) generating an initial particle suspension comprising a two-phase fluid of particles suspended in a gas flowing in an inlet duct, said particles being substantially uniformly distributed in said gas as a function of cross-sectional position in said inlet duct;

    (b) dividing said initial particle suspension into multiple final particle suspensions in corresponding multiple branch ducts, each of said final particle suspensions having a percentage of particles as a function of cross-sectional area of said inlet duct, said particles being substantially uniformly distributed in said gas as a function of cross-sectional position in said branch ducts; and

    (c) filtering said particles from said final particle suspensions by capturing said particles on a substrate.

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