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Method and apparatus for depositing particles on a moving web of material

  • US 5,415,717 A
  • Filed: 10/22/1993
  • Issued: 05/16/1995
  • Est. Priority Date: 04/24/1991
  • Status: Expired due to Term
First Claim
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1. An arrangement for depositing particles onto a moving material web, said arrangement comprising:

  • a particle dispenser;

    a perforated belt which moves over the material web;

    the particle dispenser includes means for dispensing the particles continuously in a uniform and wide flow whose width is equal to or greater than the width of a hole-pattern of the belt;

    the perforated belt extends in a same direction as the material web;

    the belt is spaced from the material web at a distance which is at least sufficient to accommodate the particles deposited on the material web between said belt and said web; and

    the arrangement includes means for removing particles which have been caught by the belt without the particles falling down onto the underlying material web, said means being located downstream of the particle dispenser.

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