Hydroentangled disintegratable fabric
Patent 4755421 Issued on July 5, 1988. Estimated Expiration Date: 
August 7, 2007. 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.
August 7, 2007. 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 ReferencesPremoistened flushable wiper Fabric having excellent wiping properties Patent #: 4612226 InventorsAssigneeApplicationNo. 07/082512 filed on 08/07/1987US Classes:442/338, Hollow strand or fiber material28/104, By fluid jet needling or perforating442/415Containing at least two chemically different strand or fiber materialsExaminersPrimary: McCamish, Marion E.Attorney, Agent or FirmInternational ClassesA47K 10/00 (20060101)A47K 10/16 (20060101) D21F 11/00 (20060101) D04H 1/46 (20060101) D21F 11/14 (20060101) D21H 25/00 (20060101) A61F 13/15 (20060101) D21H 13/02 (20060101) D21H 13/00 (20060101) D21H 13/10 (20060101) AbstractA nonwoven fibrous web is disclosed having high wet tensile strength when packed in a preservative liquid load, yet which breaks up under mild agitation conditions in a wet environment such as by the flushing action of a toilet. The wiper includes a nonwoven web made of a special blend of cellulosic fibers held together only by friction and naturally occurring hydrogen bonding. No binder is necessary to hold together the fibers. Derivatization of the fibers is not necessary for their breakapartability. The nonwoven fibrous web is produced by subjecting a wet-laid web of cellulosic fibers to hydroentanglement and drying the web without addition of a bonding agent. | |
