Fibrillated fibers and articles made therefrom
AssigneeAmerican Cyanamid Company
InventorRobert D. Giglia
Life of this patent
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Abstract
This invention relates to fibrillated fibers having particular physical characteristics, articles made therefrom as well as methods of producing the same. In particular the fibrillated fibers are defined by their Canadian Standard Freeness in combination with their Tensile Strength when formed into a sheet.
Claims19
A non-woven fabric material comprising a wet-laid sheet containing a fibrillated, monoethylenically unsaturated monomer based fiber having a Canadian Standard Freeness of less than 100 in combination with a Tensile Strength of at least 5 pounds per inch.
An improved air, liquid and water vapor permeable, toxic vapor absorptive nonwoven fabric material comprising a wet-laid sheet containing fibrillated acrylic fiber and activated carbon, the improvement comprising said fibrillated acrylic fiber having a Canadian Standard Freeness of less than 100 in combination with a Tensile Strength of greater than 5 pounds per inch and wherein said activated carbon comprises activated carbon fiber present in said fabric at a level of about one half, by weight, of said fabric.
An improved air, liquid and water vapor permeable, toxic vapor absorptive nonwoven fabric material comprising a wet-laid sheet containing fibrillated acrylic fiber and activated carbon, the improvement comprising said fibrillated acrylic fiber having a Canadian Standard Freeness of less than 100 in combination with a Tensile Strength of greater than 5 pounds per inch and wherein said activated carbon comprises activated carbon fiber present in said fabric at a level greater than about one half, by weight, of said fabric.
Dependencies are inferred from the claim text.