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Face masks having an elastic and polyolefin thermoplastic band attached thereto by heat and pressure

  • US 6,332,465 B1
  • Filed: 06/02/1999
  • Issued: 12/25/2001
  • Est. Priority Date: 06/02/1999
  • Status: Expired due to Term
First Claim
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1. A filtration face mask that comprises:

  • a mask body that is adapted to cover a mouth and nose of a wearer and that comprises polyolefin containing fibers; and

    a band that comprises an elastic polyisoprene constituent and a fibrous thermoplastic constituent, the fibrous thermoplastic constituent having a melting point of about 250°

    C. or less and being selected from the group consisting of polyolefins, substituted polyolefins, and combinations thereof, the elastic polyisoprene constituent and the thermoplastic constituent being knitted, woven, or braided together, the band being attached to the mask body by the application of heat and pressure.

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