Press section and permeable belt in a paper machine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21F-003/04
D21F-003/06
D21F-003/10
출원번호
UP-0107505
(2008-04-22)
등록번호
US-7842166
(2011-01-31)
발명자
/ 주소
Herman, Jeffrey
Scherb, Thomas Thoroee
Silva, Luiz Carlos
Walkenhaus, Hubert
출원인 / 주소
Voith Patent GmbH
대리인 / 주소
Greenblum & Bernstein P.L.C.
인용정보
피인용 횟수 :
3인용 특허 :
45
초록▼
A permeable belt, a belt press including a roll having an exterior surface and the permeable belt, and a method of drying or pressing a web with the permeable belt. The permeable belt can be tensioned to at least 30 KN/m. A side of the permeable belt has an open area of at least approximately 25% an
A permeable belt, a belt press including a roll having an exterior surface and the permeable belt, and a method of drying or pressing a web with the permeable belt. The permeable belt can be tensioned to at least 30 KN/m. A side of the permeable belt has an open area of at least approximately 25% and a contact area of at least approximately 25%. 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.
대표청구항▼
What is claimed: 1. A belt press for a paper machine, the belt press comprising: a roll comprising an exterior surface; a permeable belt comprising a first side and being guided over a portion of said exterior surface of said roll; said permeable belt having a tension of at least approximately 30 K
What is claimed: 1. A belt press for a paper machine, the belt press comprising: a roll comprising an exterior surface; a permeable belt comprising a first side and being guided over a portion of said exterior surface of said roll; said permeable belt having a tension of at least approximately 30 KN/m; said first side having an open area of at least approximately 25% a contact area of at least approximately 10%; and a pressing device pressing said permeable belt towards the roll. 2. The belt press of claim 1, wherein said first side faces the exterior surface and wherein said permeable belt exerts a pressing force on said roll. 3. The belt press of claim 1, wherein said permeable belt comprises through openings. 4. The belt press of claim 1, wherein said permeable belt comprises through openings arranged in a generally regular symmetrical pattern. 5. The belt press of claim 1, wherein said permeable belt comprises generally parallel rows of through openings, whereby the rows are oriented along a machine direction. 6. The belt press of claim 1, wherein said permeable belt exerts a pressing force on said roll in the range of between approximately 30 KPa to approximately 150 KPa. 7. The belt press of claim 1, wherein said permeable belt comprises through openings and a plurality of grooves, each groove intersecting a different set of through openings. 8. The belt press of claim 7, wherein said first side faces the exterior surface and wherein said permeable belt exerts a pressing force on said roll. 9. The belt press of claim 8, wherein said plurality of grooves arranged on said first side. 10. The belt press of claim 7, wherein each of said plurality of grooves comprises a width, and wherein each of the through openings comprises a diameter, and wherein said diameter is greater than said width. 11. The belt press of claim 1, wherein said tension of said belt is greater than approximately 50 KN/m. 12. The belt press of claim 11, wherein said tension of said belt is greater than approximately 60 KN/m. 13. The belt press of claim 11, wherein said tension of said belt is greater than approximately 80 KN/m. 14. The belt press of claim 1, wherein said roll comprises a vacuum roll. 15. The belt press of claim 1, wherein said roll comprises a vacuum roll having an interior circumferential portion. 16. The belt press of claim 15, wherein said vacuum roll comprises at least one vacuum zone arranged within said interior circumferential portion. 17. The belt press of claim 1, wherein said roll comprises a vacuum roll having a suction zone. 18. The belt press of claim 17, wherein said suction zone comprises a circumferential length of between approximately 200 mm and approximately 2,500 mm. 19. The belt press of claim 18, wherein said circumferential length is in the range of between approximately 800 mm and approximately 1,800 mm. 20. The belt press of claim 19, wherein said circumferential length is in the range of between approximately 1,200 mm and approximately 1,600 mm. 21. The belt press of claim 1, wherein said permeable belt comprises at least one of a polyurethane extended nip belt and a spiral link fabric. 22. The belt press of claim 1, wherein said permeable belt comprises a polyurethane extended nip belt which includes a plurality of reinforcing yarns embedded therein and wherein said reinforcing yarns comprise at least one of mono yarns, twisted yarns, multifilament yarns, and a combination of mono yarns, twisted yarns and multifilament yarns. 23. The belt press of claim 22, wherein said plurality of reinforcing yarns comprise a plurality of machine direction yarns and a plurality of cross direction yarns. 24. The belt press of claim 1, wherein said permeable belt comprises a polyurethane extended nip belt having a plurality of reinforcing yarns embedded therein, said plurality of reinforcing yarns being woven in a spiral link manner. 25. The belt press of claim 1, wherein said permeable belt comprises at least one spiral link fabric which includes at least one of a synthetic material, a stainless steel material, and a combination of a synthetic material and a stainless steel material. 26. The belt press of claim 25, wherein said at least one spiral link fabric comprises a synthetic material. 27. The belt press of claim 25, wherein said at least one spiral link fabric comprises stainless steel. 28. The belt press of claim 1, wherein said permeable belt comprises a permeable fabric which is reinforced by at least one spiral link belt. 29. The belt press of claim 1, further comprising: a first fabric and a second fabric traveling between said permeable belt and said roll; said first fabric having a first side and a second side; said first side of said first fabric being in at least partial contact with said exterior surface of said roll; said second side of said first fabric being in at least partial contact with a first side of a fibrous web; said second fabric having a first side and a second side; said first side of said second fabric being in at least partial contact with said first side of said permeable belt; and said second side of said second fabric being in at least partial contact with a second side of said fibrous web. 30. The belt press of claim 29, wherein said first fabric comprises one of a permeable dewatering belt, a felt, a woven fabric, and a wire. 31. The belt press of claim 29, wherein said second fabric comprises one of a structured fabric and a TAD fabric. 32. The belt press of claim 29, wherein said fibrous web comprises a tissue web or hygiene web. 33. A fibrous material drying arrangement comprising: an endlessly circulating permeable extended nip press (ENP) belt guided over a roll; said ENP belt being subjected to a tension of at least approximately 30 KN/m; said ENP belt comprising a side having an open area of at least approximately 25% and a contact area of at least approximately 10%; and a perforated pressing device pressing said ENP belt towards the roll. 34. A belt press in combination with a permeable extended nip press (ENP) belt which is capable of being subjected to a tension of at least approximately 30 KN/m, said permeable ENP belt comprising: at least one side comprising an open area of at least approximately 25% and a contact area of at least approximately 10%; and forming a nip with a moving permeable support surface, wherein an upper fabric, a lower fabric and a web arranged between the upper and lower fabrics passes through the nip, and wherein one of: the upper fabric has lower compressibility than the lower fabric; and air flow through the web is 150 cubic-meters per meter of machine width. 35. The ENP belt of claim 34, wherein the open area is defined by through openings and the contact area is defined by a planar surface. 36. The ENP belt of claim 34, wherein the open area is defined by through openings and the contact area is defined by a planar surface without openings, recesses, or grooves. 37. The ENP belt of claim 34, wherein the open area is defined by through openings and grooves, and the contact area is defined by a planar surface without openings, recesses, or grooves. 38. The ENP belt of claim 34, wherein said open area is between approximately 15% and approximately 50%, and said contact area is between approximately 50% and approximately 85%. 39. The ENP belt of claim 34, wherein said permeable ENP belt comprises a spiral link fabric. 40. The ENP belt of claim 39, wherein said open area is between approximately 30% and approximately 85%, and said contact area is between approximately 15% and approximately 70%. 41. The ENP belt of claim 39, wherein said open area is between approximately 45% and approximately 85%, and said contact area is between approximately 15% and approximately 55%. 42. The ENP belt of claim 39, wherein said open area is between approximately 50% and approximately 65%, and said contact area is between approximately 35% and approximately 50%. 43. The ENP belt of claim 34, wherein said permeable ENP belt comprises through openings arranged in a generally symmetrical pattern. 44. The ENP belt of claim 34, wherein said permeable ENP belt comprises through openings arranged in generally parallel rows relative to a machine direction. 45. The ENP belt of claim 34, wherein said permeable ENP belt comprises an endless circulating belt. 46. The ENP belt of claim 34, wherein said permeable ENP belt comprises through openings and wherein said at least one side of said permeable ENP belt comprises a plurality of grooves, each of said plurality of grooves intersecting a different set of through hole. 47. The ENP belt of claim 46, wherein each of said plurality of grooves comprises a width, and wherein each of said through openings comprises a diameter, and wherein said diameter is greater than said width. 48. The ENP belt of claim 47, wherein each of said plurality of grooves extend into the permeable ENP belt by an amount which is less than a thickness of the permeable belt. 49. The ENP belt of claim 34, wherein said tension is one of greater than approximately 50 KN/m, greater than approximately 60 KN/m, and greater than approximately 80 KN/m. 50. The ENP belt of claim 34, wherein said permeable ENP belt comprises a flexible reinforced polyurethane member. 51. The ENP belt of claim 34, wherein said permeable ENP belt comprises a flexible spiral link fabric. 52. The ENP belt of claim 34, wherein said permeable ENP belt comprises a flexible polyurethane member having a plurality of reinforcing yarns embedded therein. 53. The ENP belt of claim 52, wherein said plurality of reinforcing yarns comprise a plurality of machine direction yarns and a plurality of cross direction yarns. 54. The ENP belt of claim 34, wherein said permeable ENP belt comprises a flexible polyurethane material and a plurality of reinforcing yarns embedded therein, said plurality of reinforcing yarns being woven in a spiral link manner. 55. The ENP belt of claim 34, wherein said permeable ENP belt comprises at least one spiral link fabric. 56. The ENP belt of claim 55, wherein said at least one spiral link fabric comprises a synthetic material. 57. The ENP belt of claim 55, wherein said at least one spiral link fabric comprises stainless steel. 58. The ENP belt of claim 34, wherein said permeable ENP belt comprises a permeable fabric which is reinforced by at least one spiral link belt. 59. A method of subjecting a fibrous web to pressing in a paper machine, the method comprising: applying pressure against a contact area of the fibrous web using a pressing surface pressing against a portion of a permeable belt, wherein the contact area is at least approximately 25% of an area of said portion; and moving a fluid through an open area of said permeable belt and through the fibrous web, wherein said open area is at least approximately 25% of said portion, wherein, during the applying and the moving, said permeable belt has a tension of at least approximately 30 KN/m, and wherein the pressing surface is one of: arranged on a roll; perforated; straight or planar; and inwardly curved. 60. The method of claim 59, wherein said contact area of the fibrous web comprises areas which are pressed more by said portion than non-contact areas of the fibrous web. 61. The method of claim 59, wherein said portion of the permeable belt comprises a generally planar surface which includes no openings, recesses, or grooves and which is guided over a roll. 62. The method of claim 59, wherein said fluid comprises air. 63. The method of claim 59, wherein said open area of said permeable belt comprises through openings and grooves. 64. The method of claim 59, wherein said tension is greater than approximately 50 KN/m. 65. The method of claim 64, wherein said tension is greater than approximately 60 KN/m. 66. The method of claim 65, wherein said tension is greater than approximately 80 KN/m. 67. The method of claim 59, further comprising: rotating a roll in a machine direction, wherein said permeable belt moves in concert with and is guided over or by said roll. 68. The method of claim 59, wherein said permeable belt comprises a plurality of grooves and through openings, each of said plurality of grooves being arranged on a side of said permeable belt and intersecting with a different set of through openings. 69. The method of claim 59, wherein said applying and said moving occur for a dwell time which is sufficient to produce a fibrous web solids level in the range of between approximately 25% to 55%. 70. The method of claim 69, wherein said dwell time is one of equal to or greater than approximately 40 ms and equal to or greater than approximately 50 ms. 71. The method of claim 59, wherein said permeable belt comprises a spiral link fabric. 72. A method of pressing a fibrous web in a paper machine, the method comprising: arranging a pressing device inside an endless permeable belt; applying a first pressure against first portions of the fibrous web with the permeable belt and a second greater pressure against second portions of the fibrous web with a pressing portion of the permeable belt, wherein an area of the second portions is at least approximately 25% of an area of the first portions; and moving air through open portions of said permeable belt, wherein an area of the open portions is at least approximately 25% of the pressing portion of the permeable belt which applies the first and second pressures, wherein, during the applying and the moving, said permeable belt has a tension of at least approximately 30 KN/m. 73. The method of claim 72, wherein said tension is one of greater than approximately 50 KN/m, greater than approximately 60 KN/m, and greater than approximately 80 KN/m. 74. The method of claim 72, further comprising: rotating a roll in a machine direction, said permeable belt moving in concert with said roll. 75. The method of claim 72, wherein said area of the open portions is at least approximately 50% of the pressing portion. 76. The method of claim 72, wherein said area of the open portions is at least approximately 70% of the pressing portion. 77. The method of claim 72, wherein an average of a sum of said first pressure and said second greater pressure is in the range of between approximately 30 KPa to approximately 150 KPa. 78. The method of claim 72, wherein said moving and said applying occur substantially simultaneously. 79. The method of claim 72, further comprising moving the air through the fibrous web for a dwell time which is sufficient to produce a fibrous web solids in the range of between approximately 25% and approximately 55%. 80. The method of claim 79, wherein said dwell time is one of equal to or greater than approximately 40 ms and equal to or greater than approximately 50 ms. 81. The method of claim 72, wherein the pressing device is a roll. 82. A method of drying a fibrous web in a belt press which includes a roll and a permeable belt comprising through openings, wherein an area of the through openings of a pressing portion of the permeable belt is at least approximately 25% of an area of the pressing portion, and wherein the permeable belt is tensioned to at least approximately 30 KN/m, the method comprising: applying a pressing force against the permeable belt via a pressing surface; guiding at least the pressing portion of the permeable belt over the roll; moving the fibrous web between the roll and the pressing portion of the permeable belt; subjecting at least approximately 10% of the fibrous web to a pressure produced by portions of the permeable belt which are adjacent to the through openings; and moving a fluid through the through openings of the permeable belt and the fibrous web, wherein the pressing surface is one of: arranged on a roll; perforated; straight or planar; and inwardly curved. 83. The method of claim 82, wherein the permeable belt comprises grooves and wherein the subjecting comprises subjecting at least approximately 25% of the fibrous web to a pressure produced by portions of the permeable belt which are adjacent to the through openings and the grooves. 84. The method of claim 82, wherein the permeable belt comprises a spiral link fabric. 85. The method of claim 82, wherein the portions of the permeable belt which are adjacent to the through openings comprises a contact area, and wherein the contact area is at least approximately 25% of the area of the pressing portion. 86. A belt press for a paper machine, the belt press comprising: a vacuum roll comprising an exterior surface and at least one suction zone; a permeable belt comprising a first side and being guided over a portion of said exterior surface of said vacuum roll; said permeable belt having a tension of at least approximately 30 KN/m; and said first side having an open area of at least approximately 25% a contact area of at least approximately 10%; and a pressing device applying a pressing force against said permeable belt, wherein the pressing device one of: is a roll; and comprises a perforated pressing surface. 87. The belt press of claim 86, wherein said at least one suction zone comprises a circumferential length of between approximately 200 mm and approximately 2,500 mm. 88. The belt press of claim 87, wherein said circumferential length defines an arc of between approximately 80 degrees and approximately 180 degrees. 89. The belt press of claim 88, wherein said circumferential length defines an arc of between approximately 80 degrees and approximately 130 degrees. 90. The belt press of claim 86, wherein said at least one suction zone is adapted to apply vacuum for a dwell time which is equal to or greater than approximately 40 ms. 91. The belt press of claim 90, wherein said dwell time is equal to or greater than approximately 50 ms. 92. The belt press of claim 86, wherein said permeable belt exerts a pressing force on said vacuum roll for a first dwell time which is equal to or greater than approximately 40 ms. 93. The belt press of claim 92, wherein said at least one suction zone is adapted to apply vacuum for a second dwell time which is equal to or greater than approximately 40 ms. 94. The belt press of claim 93, wherein said second dwell time is equal to or greater than approximately 50 ms. 95. The belt press of claim 94, wherein said first dwell time is equal to or greater than approximately 50 ms. 96. The belt press of claim 86, wherein said permeable belt comprises at least one spiral link fabric. 97. The belt press of claim 96, wherein said at least one spiral link fabric comprises a synthetic material. 98. The belt press of claim 96, wherein said at least one spiral link fabric comprises stainless steel. 99. The belt press of claim 96, wherein said at least one spiral link fabric comprises a tension which is between approximately 30 KN/m and approximately 80 KN/m. 100. The belt press of claim 99, wherein said tension is between approximately 35 KN/m and approximately 70 KN/m. 101. A belt press for a paper machine, the belt press comprising: a supporting structure comprising a flat or planar perforated support surface; at least one suction zone arranged on one side of the perforated support surface; a tensioned permeable belt comprising a first side and being guided over a portion of said perforated support surface; and a pressing surface pressing said permeable belt towards the perforated support surface, wherein the pressing surface is one of: arranged on a roll; perforated; straight or planar; and inwardly curved. 102. The belt press of claim 101, wherein said at least one suction zone is adapted to apply vacuum for a second dwell time which is equal to or greater than approximately 40 ms. 103. The belt press of claim 101, wherein said permeable belt exerts a pressing force on the perforated support surface for a first dwell time which is equal to or greater than approximately 40 ms. 104. The belt press of claim 101, wherein said at least one suction zone comprises a circumferential length of between approximately 200 mm and approximately 2,500 mm. 105. The belt press of claim 101, wherein said permeable belt exerts a pressing force on said the perforated support surface in the range of between approximately 30 KPa to approximately 150 KPa. 106. The belt press of claim 101, wherein said permeable belt is an endless belt. 107. A method of subjecting a fibrous web to pressing in the belt press of claim 101, the method comprising: moving the fibrous web arranged between upper and lower belts between the perforated support surface and the permeable belt; moving a fluid through an open area of said permeable belt, through the fibrous web, through the perforated support surface, and into the at least one suction zone. 108. A belt press for a paper machine, the belt press comprising: a roll or cylinder comprising a perforated support surface having a diameter greater than approximately 1 meter; at least one suction zone arranged on one side of the perforated support surface; a tensioned permeable belt comprising a first side and being guided over a portion of said perforated support surface; and a pressing surface pressing said permeable belt towards the roll or cylinder, wherein the pressing surface is one of: arranged on a roll; perforated; straight or planar; and inwardly curved. 109. The belt press of claim 108, wherein said at least one suction zone is adapted to apply vacuum for a second dwell time which is equal to or greater than approximately 40 ms. 110. The belt press of claim 108, wherein said permeable belt exerts a pressing force on the perforated support surface for a first dwell time which is equal to or greater than approximately 40 ms. 111. The belt press of claim 108, wherein said at least one suction zone comprises a circumferential length of between approximately 200 mm and approximately 2,500 mm. 112. The belt press of claim 108, wherein said permeable belt exerts a pressing force on said the perforated support surface in the range of between approximately 30 KPa to approximately 150 KPa. 113. The belt press of claim 108, wherein said permeable belt is an endless belt. 114. A method of subjecting a fibrous web to pressing in the belt press of claim 108, the method comprising: moving the fibrous web arranged between upper and lower belts between the perforated support surface and the permeable belt; moving a fluid through an open area of said permeable belt, through the fibrous web, through the perforated support surface, and into the at least one suction zone.
Hada Frank Stephen ; Hermans Michael Alan ; Isenhart Brian Wade ; Thoms Lowell Everett ; Tomsovic Charles Robert, Air press method for dewatering a wet web.
Emson Stephen Derek (Sheffield EN) Norton Christopher Stephen (Sheffield EN) Wilson James Royston (Sheffield EN), Belt press with rotatable cylinder and adjustable pressure member.
Lippi Alves Fernandes, Ademar; Ringer, Martin; Warren, Carl; Hender, Blake; Sharkey, Daniel; Scherb, Thomas Thoroee, High tension permeable belt for an ATMOS system and press section of paper machine using the permeable belt.
Ensign Donald E. (Cincinnati OH) Knight Wilbur R. (Cincinnati OH) Trokhan Paul D. (Hamilton OH), Limiting orifice drying of cellulosic fibrous structures, apparatus therefor, and cellulosic fibrous structures produced.
Ilvespaa Heikki,FIX ; Kaihovirta Juha,FIX ; Kuhasalo Antti,FIX ; Laapotti Jorma,FIX, Method and device for enhancing the run of a paper web in a paper machine.
Hermans Michael A. (Neenah WI) Chen Fung-Jou (Appleton WI) Spiegelberg Harry L. (Appleton WI) Kressner Bernhardt E. (Appleton WI) Nielsen Janice G. (Appleton WI), Method for increasing the internal bulk of throughdried tissue.
Hermans Michael A. (Neenah WI) Chen Fung-Jou (Appleton WI) Spiegelberg Harry L. (Appleton WI) Kressner Bernhardt E. (Appleton WI) Nielsen Janice G. (Appleton WI), Method for increasing the internal bulk of wet-pressed tissue.
Ahrens Frederick W. ; Gulya Thomas ; Worry Gary L. ; Wright Walter P., Papermaking fabric, process for producing high bulk products and the products produced thereby.
Morgan ; Jr. George (Cincinnati OH) Rich Thomas F. (Cincinnati OH), Process for forming a layered paper web having improved bulk, tactile impression and absorbency and paper thereof.
Cowan Wavell (Montpelier VT) McGurk Stanley (Toronto CAX), Roll press for removing water from a web of paper using solid grooved roll and compressed air.
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