초록 ▼

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 feature

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.

대표청구항 ▼

[ That which is claimed is:] [1.] An article comprising a web having a cured, shear thinned material positioned within the web to control the effective pore size of the web;wherein said web has a plurality of web members with interstices therebetween and a three dimensional top surface opposed from

[ That which is claimed is:] [1.] An article comprising a web having a cured, shear thinned material positioned within the web to control the effective pore size of the web;wherein said web has a plurality of web members with interstices therebetween and a three dimensional top surface opposed from a three dimensional bottom surface; andwherein said cured, shear thinned material forms a thin film encapsulating at least some of the web members, leaving most of the interstices between web members open.