Patents Represented by Attorney Joseph P. Dority & Manning, P.A. Harps

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  • Process for forming liquid impermeable sheet material having a fibrous surface and products formed thereby
    Patent number: 5783290
    Abstract: Disclosed are a number of processes for forming a liquid-impermeable sheet having a fibrous cloth-like surface. In one embodiment the process includes the steps of: (1) forming a sheet having first and second fibrous surfaces; and subjecting the sheet to pressure and a z-gradient temperature differential sufficient to melt the fibers of the first surface and form the melt into a liquid impermeable skin without significantly altering the fibers of the second surface.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 21, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Robert Lewis Isaac, Bernard Cohen, Lee Kirby Jameson