Dewatering system for dewatering a web. The system comprises a former, a belt press, and a structured fabric comprising a paper web facing side and being guided over a support surface and through the belt press. The structured fabric runs at a speed differential relative to a wire of the former. Thi
Dewatering system for dewatering a web. The system comprises a former, a belt press, and a structured fabric comprising a paper web facing side and being guided over a support surface and through the belt press. The structured fabric runs at a speed differential relative to a wire of the former. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
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What is claimed: 1. A dewatering system for dewatering a web, the system comprising: a former comprising an inner forming wire; a belt press; and a structured fabric comprising a paper web facing side and being guided over a support surface and through the belt press, wherein the structured fabric
What is claimed: 1. A dewatering system for dewatering a web, the system comprising: a former comprising an inner forming wire; a belt press; and a structured fabric comprising a paper web facing side and being guided over a support surface and through the belt press, wherein the structured fabric runs at a slower speed than the former, and wherein the inner forming wire is not a structured fabric. 2. The system of claim 1, wherein the structured fabric comprising a permeability value of between approximately 100 cfm and approximately 1200 cfm, a paper surface contact area of between approximately 5% and approximately 70% when not under pressure and tension, and an open area of between approximately 10% and approximately 90%. 3. The system of claim 1, wherein the belt press is arranged on an ATMOS system. 4. The system of claim 1, wherein at least one surface of the structured fabric comprises at least one of an abraded surface and a sanded surface. 5. The system of claim 1, wherein the structured fabric comprises one of: a single material; a monofilament material; a multifilament material; and two or more different materials. 6. The system of claim 1, wherein the structured fabric is resistant to at least one of hydrolysis and temperatures which exceed 100 degrees C. 7. The system of claim 1, wherein the support surface is static. 8. The system of claim 1, wherein the support surface is arranged on a roll. 9. The system of claim 8, wherein the roll is a vacuum roll having a diameter of between approximately 1000 mm and approximately 2500 mm. 10. The system of claim 9, wherein the vacuum roll has a diameter of between approximately 1400 mm and approximately 1700 mm. 11. The system of claim 1, wherein the belt press forms an extended nip with the support surface. 12. The system of claim 11, wherein the extended nip has an angle of wrap of between approximately 30 degrees and approximately 180 degrees. 13. The system of claim 12, wherein the angle of wrap is between approximately 50 degrees and approximately 130 degrees. 14. The system of claim 11, wherein the extended nip has a nip length of between approximately 800 mm and approximately 2500 mm. 15. The system of claim 14, wherein the nip length is between approximately 1200 mm and approximately 1500 mm. 16. The system of claim 1, wherein the structured fabric is an endless belt that is at least one of pre-seamed and has its ends joined on a machine which utilizes the belt press. 17. The system of claim 1, wherein the structured fabric is structured and arranged to impart a topographical pattern to a web. 18. The system of claim 1, wherein the web comprises at least one of a tissue web, a hygiene web, and a towel web. 19. A method of subjecting a fibrous web to pressing in a paper machine using the system of claim 1, the method comprising: forming the fibrous web in the former; and applying pressure to the structured fabric and the fibrous web in the belt press. 20. The system of claim 1, further comprising a dewatering fabric. 21. The system of claim 20, wherein the dewatering fabric comprises a caliper of between approximately 0.1 mm and approximately 15 mm, a permeability value of between approximately 1 cfm and approximately 500 cfm, an overall density of between approximately 0.2 g/cm3 and approximately 1.10 g/cm3, and a weight of between approximately 350 g/m2 and approximately 3000 g/m2. 22. The system of claim 1, wherein the belt press comprises a permeable belt. 23. The system of claim 22, wherein the permeable belt comprises a tension of between approximately 20 kN/m and approximately 100 KN/m, a permeability value of between approximately 100 cfm and approximately 1200 cfm, a surface contact area of the paper web side that is between approximately 0.5% and approximately 90% when not under tension, and an open area of between approximately 1.0% and approximately 85%. 24. The system of claim 1, wherein a speed differential between the structured fabric and the inner forming wire of the former is between approximately 5% and approximately 30%. 25. The system of claim 24, wherein the speed differential is between approximately 10% and approximately 20%. 26. The system of claim 1, wherein the former is at least one of: a twin wire former; a Fourdrinier machine; a machine which forms the web and transfers the web to the structured fabric; and a machine which transfers the web to the structured fabric utilizing a pick-up device. 27. The system of claim 1, wherein the former further comprises an outer forming wire and a forming roll and wherein the inner forming wire transfers the paper web to the structured fabric. 28. The system of claim 1, wherein the inner forming wire transfers the paper web to the structured fabric. 29. The system of claim 1, wherein the paper web has approximately 75% un-pressed fibers. 30. A dewatering system for dewatering a web, the system comprising: a twin wire former comprising an outer wire and an inner wire; a belt press arranged downstream of the twin wire former; and a structured fabric arranged to support the web after the web is transferred from the inner wire, wherein the structured fabric and the inner wire of the twin wire former run at different speeds, and wherein the inner wire is not a structured fabric. 31. The system of claim 30, wherein a speed differential between the structured fabric and the inner wire is between approximately 5% and approximately 30%. 32. The system of claim 31, wherein the speed differential is between approximately 10% and approximately 20%. 33. A method of subjecting a fibrous web to pressing in a paper machine using the system of claim 30, the method comprising: forming the fibrous web in the twin wire former; and applying pressure to the structured fabric and the fibrous web in the belt press. 34. The system of claim 30, wherein the paper web has approximately 75% un-pressed fibers. 35. A dewatering system for dewatering a web, the system comprising: a twin wire former comprising an outer wire, an inner wire, and a forming roll; a belt press arranged downstream of the twin wire former; a structured fabric having a web facing side and being arranged to support the web after the web is transferred from the inner wire; and a dewatering belt having a web facing side and passing through the belt press, wherein the structured fabric runs at a slower speed than the inner wire of the twin wire former, and wherein the inner wire is not a structured fabric. 36. The system of claim 35, wherein a speed differential between the structured fabric and the inner wire is between approximately 5% and approximately 30%. 37. The system of claim 36 wherein the speed differential is between approximately 10% and approximately 20%. 38. The system of claim 35, wherein the web is subjected to drying in the belt press by utilizing air flow through the structured fabric, then through the web, and then through the dewatering belt. 39. A method of subjecting a fibrous web to pressing in a paper machine using the system of claim 35, the method comprising: forming the fibrous web in the twin wire former; and applying pressure to the structured fabric and the fibrous web in the belt press. 40. The system of claim 35, wherein the paper web has approximately 75% un-pressed fibers.
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