Method of forming a nonwoven composite fabric and fabric produced thereof
Patent 6739023 Issued on May 25, 2004. Estimated Expiration Date: 
July 18, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 18, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2666369 3485706 3494821 3821068 Nonwoven fabric and method of producing same Method for making nonwoven fabric and product Nonwoven disposable wiper Composite sheet structure Nonwoven fabric of ribbon-shaped polyester fibers Nonwoven fabric for apparel insulating interliner InventorsApplicationNo. 10197736 filed on 07/18/2002US Classes:28/104, By fluid jet needling or perforating28/167By fluid contactExaminersPrimary: Vanatta, A.Attorney, Agent or FirmForeign Patent References
International ClassD04H 502AbstractThe present invention provides a method of forming a nonwoven composite fabric that includes the steps of a) providing a first layer that includes splittable continuous fibers, b) splitting at least a portion of the splittable continuous fibers into split filaments, c) thereafter superposing a second layer and the first layer, wherein the second layer includes staple fibers, and d) entangling the first and second layers to form a composite fabric.Other References
Field of SearchBy fluid jet needling or perforatingThrough backing and support members To form perforations Fiber entangling and interlocking Needling With treatment Distinct needling stations By fluid contact By pretreatment of component Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship (e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.) or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material Side-by-side multicomponent strand or fiber material Islands-in-sea multicomponent strand or fiber material Including an additional nonwoven fabric Additional nonwoven fabric is a spun-bonded fabric Needled Hydroentangled Mechanically interengaged by needling or impingement of fluid (e.g., gas or liquid stream, etc.) Separate nonwoven fabric layers comprise chemically different strand or fiber material Spun-bonded nonwoven fabric Needled nonwoven fabric Hydroentangled nonwoven fabric Needled DIRECT APPLICATION OF FLUID PRESSURE DIFFERENTIAL TO PERMANENTLY SHAPE, DISTORT, OR SUSTAIN WORK Production of continuous or running length Including liquid contact Including hydrostatic or liquid pressure | |
