Patents Assigned to Pellon Company
  • Polyester heat bonded product
    Patent number: 4904523
    Abstract: Disclosed is a nonwoven fabric which is a nonspunbonded fabric and has a surface free of standing fibers and a method for making the same. The fabric is useful as a support for case on coatings to form a composite for TFC membrane filters. The fabric is formed of a first layer having binder fiber and matrix fiber. A second layer of 100 percent binder fiber is cast thereon. The binder fiber has a softening point lower than the melting point of the matrix fiber. The first and second layers are bonded by heat and pressure to form the fabric.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 27, 1990
    Assignee: Pellon Company
    Inventors: Quentin L. Kampf, Chester J. Petkiewicz, Gernot K. Buerger