Porous webs having a polymer composition controllably placed therein
AssigneeNextec Applications, Inc.
InventorJ. Michael Caldwell
Life of this patent
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Abstract
The present invention relates to a porous web comprising a plurality of structural elements with interstitial spaces therebetween, wherein at least some of the structural elements of the top and bottom surfaces of the web are encapsulated by a cured, shear thinned polymer composition and most of the interstitial spaces are open. The invention also relates to a porous web having a substantially continuous region of a cured, shear thinned polymer composition extending through the web so that the polymer composition fills the interstitial spaces and adheres adjacent structural elements of the web in the region. In the areas of the web above and below the filled region, at least some of the structural elements are encapsulated and most of the interstitial spaces are open.
Claims70
A porous web comprising a three dimensional structure of a plurality of structural elements with interstitial spaces therebetween;
- said web having a three dimensional top surface opposed from a three dimensional bottom surface;
- at least some of said structural elements of said top and bottom surfaces are encapsulated by a cured, liquid silicone polymer composition;
- and
- most of the interstitial spaces are open.
A porous web comprising a three dimensional structure of a plurality of structural elements with interstitial spaces therebetween;
- most of said structural elements are encapsulated by a cured, liquid silicone polymer composition;
- and
- most of the interstitial spaces are open.
A porous web comprising a three dimensional structure of a plurality of structural elements with interstitial spaces therebetween;
- said web having a three dimensional top surface opposed from a three dimensional bottom surface;
- a substantially continuous region of a cured, liquid silicone polymer composition extending through the web, said region of polymer composition filling the interstitial spaces and adhering adjacent structural elements;
- at least some of the structural elements above and below said region are encapsulated by a cured, liquid silicone polymer composition;
- and
- most of the interstitial spaces between said encapsulated structural elements above and below said region are open.
A porous web comprising a three dimensional structure of a plurality of structural elements with interstitial spaces therebetween;
- said web having a three dimensional top surface opposed from a three dimensional bottom surface;
- a substantially continuous region of a cured, liquid silicone polymer composition extending through the web, said region of polymer composition filling the interstitial spaces and adhering adjacent structural elements;
- most of the structural elements of the top surface exposed out of said region are encapsulated by a cured, liquid silicone polymer composition;
- and
- most of the interstitial spaces between said encapsulated structural elements are open.
Dependencies are inferred from the claim text.