Patent ID: 6312523
Filing Date: 2001-11-06
Classification: A61F,A61L,B05C,C08J,C14C,D04H,D06B,D06M,D06N,D21H

Abstract:
Apparatus for controlling placement of a polymer composition into a moving porous web having a plurality of structural elements with interstitial spaces therebetween comprising:means for applying tension to the porous web within a processing zone;means for applying a shear-thinnable polymer composition onto a surface of a tensioned web;means for shear thinning the polymer composition to substantially reduce its viscosity and selectively place it into the tensioned web leaving at least some of the interstitial spaces open, said shear thinning means including at least one process head having a rigid knife blade mounted thereto transversely to said moving web for engagement of said moving web;means for selectively positioning said process head within said processing zone;means mounted to said process head for selectively positioning said knife blade vertically and rotationally against said moving web; andmeans for curing a treated web.