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Particle-loaded nonwoven fibrous article for separations and purifications

  • US 5,595,649 A
  • Filed: 02/16/1995
  • Issued: 01/21/1997
  • Est. Priority Date: 10/11/1991
  • Status: Expired due to Fees
First Claim
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1. A disk comprisinga) a thermoplastic nonwoven fibrous web, andb) sorptive or reactive particles enmeshed in said web to provide a particle-loaded fibrous disk,wherein said particle-loaded fibrous disk has been compressed or fused by at least one of calendering, heating, and applying pressure to provide said disk with controlled porosity and a Gurley number of at least two seconds, said disk being useful in solid phase extraction.

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