Controlling the porosity and permeation of a web

Details Controlling the porosity and permeation of a web Controlling the porosity and permeation of a web

1998-01-27

2000-06-06

Dixon, Merrick

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

428225, 428234, 428235, 428221, 4283044, 4283066, 428264, 428283, 428289, 428290, D03D 300

Patent

active

060716029

ABSTRACT:
Articles for controlling the porosity and permeation of a web are provided using a curable thixotropic shear thinnable polymer composition that preferably encapsulates a plurality of fibers of the web and/or forms an internal layer within the web. Webs suitable for several different uses are featured, for example medical garments resistant to permeation by a virus or bacteria. The effective pore size of the web is controlled by regulating various factors such as the thickness of the polymer composition encapsulating the fibers and the thickness and placement of the internal polymer layer. Other factors include the polymer density, structure, and crosslinking orientation, as well as the diffusion, permeation and sorption of the polymer.

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