Method for forming laminate nonwoven fabric
November 29, 2021. 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 3047444 Process for making nonwoven fabric Method for producing patterned non-woven fabric High strength hydroentangled nonwoven fabric Water entanglement process and product Textile for linings and method of manufacturing same Papermaking belt and method of making the same using a deformable casting surface Process for obtaining a composite textile structure based on nonwoven fibrous sheets Cleaning sheet comprising a network layer and at least one nonwoven layer of specific basis weight needled thereto Laminated non-woven fabric filtering medium and method for producing same InventorAssigneeApplicationNo. 09997682 filed on 11/29/2001US Classes:28/104, By fluid jet needling or perforating28/167By fluid contactExaminersPrimary: Vanatta, Amy B.Attorney, Agent or FirmInternational ClassD04H 146AbstractA method for creating a nonwoven laminate fabric has steps of depositing a first nonwovne layer on a moving support, depositing a second nonwoven layer over the first layer, and conveying the layers under a manifold. The manifold has a plurality of jet clusters separated from one another by a distance. Water is directed form the jet clusters onto the underlying layers to thereby create a laminated fabric. Because the jet clusters are separated from one another, the laminate fabric is “pattern entangled”. Bundling occurs along substantially linear lines, with much lighter bundling in regions between the linear bundling regions. The result is a fabric with regions of relative strong entanglement and other regions of much lighter entanglement. When three layers are laminated, with top and bottom layers of thin veneer and a center layer of pulp the method of the invention has been discovered to result in a laminate fabric with particular utility as a flushable wipe product.Field of SearchBy fluid jet needling or perforatingThrough backing and support members To form perforations By fluid contact Ornamental or surface textured fabric Hydroentangled Mechanically interengaged by needling or impingement of fluid (e.g., gas or liquid stream, etc.) Hydroentangled nonwoven fabric To similarly formed batt With weaving, knitting, braiding, twisting or needling Of at least two bonded subassemblies Confined areas | |
