Non-woven activated carbon fabric

• US 4,565,727 A
• Filed: 04/23/1985
• Issued: 01/21/1986
• Est. Priority Date: 09/12/1983
• Status: Expired due to Term

• Current Assignee: Sterling Chemicals Incorporated (Eastman Chemical Company)
• Original Assignee: American Colloid Company (Minerals Technologies Incorporated)
• Inventors: Giglia, Robert D., Battistelli, Edward A.
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/725,527
• Time in Patent Office: 273 Days
• Field of Search: 428/171, 428/172, 428/281, 428/283, 428/286, 428/367, 428/408, 428/288, 428/297, 428/298, 428/299, 162/146, 210/505, 210/508, 210/509, 210/510, 55/527, 55/528
• US Class Current: 428/172
• CPC Class Codes: A61F 2013/15065 for protecting in contaminated ambience, e.g. NBC or industrial chemicals
• CPC Class Codes: A62D 5/00 Composition of materials for coverings or clothing affording protection against harmful chemical agents
• CPC Class Codes: D21H 13/16 Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
• CPC Class Codes: D21H 13/18 Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylonitriles
• CPC Class Codes: D21H 13/50 Carbon fibres
• CPC Class Codes: D21H 17/67 Water-insoluble compounds, e.g. fillers, pigments
• CPC Class Codes: D21H 5/12 characterised by the use of special fibrous materials felts or other non-woven fabrics D04
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/2918 including free carbon or carbide or therewith [not as steel]
• CPC Class Codes: Y10T 428/30 Self-sustaining carbon mass or layer with impregnant or other layer
• CPC Class Codes: Y10T 442/218 Organosilicon containing
• CPC Class Codes: Y10T 442/2189 Fluorocarbon containing
• CPC Class Codes: Y10T 442/2516 Chemical material is one used in biological or chemical warfare
• CPC Class Codes: Y10T 442/57 Including particulate material other than fiber
• CPC Class Codes: Y10T 442/693 Including a paper layer
• CPC Class Codes: Y10T 442/697 Containing at least two chemically different strand or fiber materials

Abstract

An air and water vapor permeable, toxic vapor absorptive non-woven fabric material comprising a web-laid sheet containing fibrillated acrylic fiber, and an activated carbon constituent selected from the group consisting of activated carbon fiber, activated carbon particles, and mixtures of activated carbon fiber and activated carbon particles.

Claims

1. An air and water vapor permeable, toxic vapor absorptive, non-woven fabric material comprising a wet-laid sheet containing fibrillated acrylic fiber, activated carbon fiber and activated carbon particles, wherein the concentration of fibrillated acrylic fiber ranges from about 5-25% by weight based on the total weight of fibers and particles, the concentration of activated carbon fiber ranges from about 10-75% by weight, same basis, and the concentration of activated carbon particles ranges from about 15-80% by weight, same basis.

2. The fabric material of claim 1 wherein the fabric material surface is embossed.

3. The fabric material of claim 2 wherein a backing member is adhered thereto.

4. The fabric material of claim 1 wherein a backing member is adhered thereto.