Reinforced dry laid fibrous webs
Patent 4902552 Issued on February 20, 1990. Estimated Expiration Date: 
November 4, 2008. 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.
November 4, 2008. 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 3597299 3645836 3695985 3726750 Fibre mat for the dry production of compressed mouldings Patent #: 4198460 InventorApplicationNo. 267345 filed on 11/04/1988US Classes:428/152, Wrinkled, creased, crinkled or creped442/416Containing polymeric and natural strand or fiber materialsExaminersPrimary: Bell, James J.Attorney, Agent or FirmInternational ClassD06H 007/04AbstractA method and apparatus for making reinforced, dry laid fibrous web. A first layer of dry cellulosic fibers is laid on a forming wire. A plurality of yarns maintained under tension are applied to the first layer of dry cellulosic fibers. The tension on the bulked yarns is released upon application of the yarns to the first layer of dry cellulosic fibers to form relaxed, bulked yarns. A second layer of dry cellulosic fibers is laid on the first layer of dry cellulosic fibers and relaxed, bulked yarns.Field of SearchWrinkled, creased, crinkled or creped | |
