公开(公告)号：US5389205A

公开(公告)日：1995-02-14

申请号：US26851

申请日：1993-03-05

申请人： Juhani Pajula ,  Juha Kivimaa ,  Jorma Lapotti ,  Martti Hirsimaki ,  Pekka Taskinen ,  Mikko Karvinen

发明人： Juhani Pajula ,  Juha Kivimaa ,  Jorma Lapotti ,  Martti Hirsimaki ,  Pekka Taskinen ,  Mikko Karvinen

IPC分类号： D21F3/02 ,  D21F3/04 ,  D21F3/06 ,  D21F9/02

CPC分类号： D21F3/0218 ,  D21F3/04 ,  D21F3/045

摘要： Method and device in the manufacture of paper or board for dewatering of a paper web that is being manufactured. The paper web is transferred from a forming wire onto a wire in the drying section while constantly on support of a fabric that receives water, a transfer fabric, or of any other, corresponding transfer surface as a closed draw, at a particularly high speed, which is higher than about 25-30 m/s. Dewatering of the paper web is carried out by means of at least two subsequent press nips, of which nips at least one press nip is a so-called extended-nip zone, whose length in a machine direction is larger than about 100 mm. The extended-nip zone is formed in connection with a mobile flexible press-band loop. The distribution of the compression pressure employed within said extended-nip press zone is regulated and/or selected both in the transverse direction of the web and in the machine direction so as to set or to control the different profiles of properties of the web.

摘要翻译： 制造纸张或纸板的方法和装置，用于正在制造的纸幅的脱水。 纸幅从成形线转移到干燥部分中的线上，同时以特别高的速度恒定地支撑接收水，转印织物或任何其它相应的转印表面作为封闭绘制的织物， 高于约25-30m / s。 纸幅的脱水通过至少两个随后的压榨辊进行，其中至少一个压榨辊隙是所谓的延伸压区，其长度在机器方向上大于约100mm。 延伸压区是与移动的柔性压带环结合形成的。 在所述延伸压区压区中采用的压缩压力的分布在幅材的横向方向和机器方向上被调节和/或选择，以便设定或控制幅材的不同特性。

公开(公告)号：US5611893A

公开(公告)日：1997-03-18

申请号：US377173

申请日：1995-01-24

申请人： Juhani Pajula ,  Martti Hipsimaki ,  Juha Kivimaa ,  Pekka Taskinen ,  Jorma Laapotti ,  Mikko Karvinen

发明人： Juhani Pajula ,  Martti Hipsimaki ,  Juha Kivimaa ,  Pekka Taskinen ,  Jorma Laapotti ,  Mikko Karvinen

IPC分类号： D21F3/02 ,  D21F3/04 ,  D21F3/06

CPC分类号： D21F3/0218 ,  D21F3/04 ,  D21F3/045

摘要： Method and device in the manufacture of paper or board for dewatering of a paper web that is being manufactured. The paper web is transferred from a forming wire onto a wire in the drying section while constantly on support of a fabric that receives water, a transfer fabric, or of any other, corresponding transfer surface as a closed draw, at a particularly high speed, which is higher than about 25-30 m/s. Dewatering of the paper web is carried out by means of at least two subsequent press nips, of which nips at least one press nip is a so-called extended-nip zone, whose length in a machine direction is larger than about 100 mm. The extended-nip zone is formed in connection with a mobile flexible press-band loop. The distribution of the compression pressure employed within said extended-nip press zone is regulated and/or selected both in the transverse direction of the web and in the machine direction so as to set or to control the different profiles of properties of the web.

摘要翻译： 制造纸张或纸板的方法和装置，用于正在制造的纸幅的脱水。 纸幅从成形线转移到干燥部分中的线上，同时以特别高的速度恒定地支撑接收水，转印织物或任何其它相应的转印表面作为封闭绘制的织物， 高于约25-30米/秒。 纸幅的脱水通过至少两个随后的压榨辊进行，其中至少一个压榨辊隙是所谓的延伸压区，其长度在机器方向上大于约100mm。 延伸压区是与移动的柔性压带环结合形成的。 在所述延伸压区压区中采用的压缩压力的分布在幅材的横向方向和机器方向上被调节和/或选择，以便设定或控制幅材的不同特性。

公开(公告)号：US5240563A

公开(公告)日：1993-08-31

申请号：US829989

申请日：1992-02-03

申请人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

发明人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

IPC分类号： D21F3/04 ,  D21F7/00

CPC分类号： D21F3/04 ,  D21F7/001

摘要： Closed press section in a paper machine, comprising a compact combination of press rolls. Certain of rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band fabric, means for conditioning of the band and/or safety devices are provided, by whose means an adequate operation of the transfer band fabric is maintained.

公开(公告)号：US5611892A

公开(公告)日：1997-03-18

申请号：US319164

申请日：1994-10-06

申请人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

发明人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

IPC分类号： D21F3/04 ,  D21F7/00

CPC分类号： D21F3/04 ,  D21F7/001

摘要： A closed press section in a paper machine including a compact combination of press rolls, some of which define press nips with each other between which the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which at least one press nip is formed. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is preferably made of a fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band are chosen so that, after the last nip, the web follows the transfer band, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band, means for conditioning/cleaning the band and/or safety devices are provided, by whose means an adequate operation of the transfer band is maintained.

摘要翻译： 一种造纸机中的封闭压榨部，包括压榨辊的紧凑组合，其中一些压榨辊彼此限定压榨辊，纤维网之间具有由织物的表面支撑的封闭的牵伸。 压榨部具有与其形成至少一个压榨压区的中心辊。 传送带的闭环绕中心辊。 在紧密组合的辊之间的最后一个压榨辊隙之后，将纸幅作为封闭且持续支撑的牵引力转印到转印带的外表面上，在牵引部之后的干燥部分中的干燥丝线上。 转移带环优选由基本上不接收水并且不再润湿网的织物制成。 选择转移带的外表面的网粘附性能，使得在最后压区之后，幅材跟随转印带，并且使得幅材可以作为完全封闭的拉丝转印到干燥丝上。 结合传送带的环路，提供用于调节/清洁带和/或安全装置的装置，通过它们的手段保持传送带的适当的操作。

公开(公告)号：US5495678A

公开(公告)日：1996-03-05

申请号：US201555

申请日：1994-02-24

申请人： Antti Ilmarinen ,  Heikki Ilvespaa/ ,  Antti Kuhasalo ,  Jouko Yli-Kauppila ,  Pertti Heikkila/ ,  Iikka Jokioinen ,  Matti Korpela ,  Henrik Petterson ,  Mikko Karvinen ,  Va/ ino/ Sailas ,  Pekka Taskinen ,  Dick Parker

发明人： Antti Ilmarinen ,  Heikki Ilvespaa/ ,  Antti Kuhasalo ,  Jouko Yli-Kauppila ,  Pertti Heikkila/ ,  Iikka Jokioinen ,  Matti Korpela ,  Henrik Petterson ,  Mikko Karvinen ,  Va/ ino/ Sailas ,  Pekka Taskinen ,  Dick Parker

IPC分类号： D21F5/04 ,  D21F5/18 ,  F26B11/02

CPC分类号： D21F5/184 ,  D21F5/042 ,  D21F5/044 ,  D21F5/182

摘要： A method and device for drying a paper web wherein the paper web is supported on a drying wire without long open draws of the web. The paper web is contact-dried by pressing it with the drying wire onto a face of a contact-drying cylinder whose diameter is greater than about 1.5 m on a sector b whose magnitude is greater than about 180.degree.. The web is evaporation-dried as blowing-on drying and/or as through-drying by means of high-velocity drying-gas jets applied to the web on the drying wire on the face of the following large-diameter cylinder whose diameter is greater than about 2 m on a sector a having a magnitude greater than about 180.degree. while the web is on the side of the outside curve. The web to be dried is passed over a sector c of the suction roll which is subjected to negative pressure while the web is supported on the drying wire at the side of the outside curve. The magnitude of the sector of the suction roll has a magnitude greater than about 160.degree. and the diameter of the suction roll is less than the diameter of the contact-drying cylinder.

摘要翻译： 一种用于干燥纸幅的方法和装置，其中纸幅被支撑在干燥丝上，而不需要幅材的长时间打开。 通过用烘干线将纸幅通过其直径大于约1.5μm的接触干燥筒的面积大于约180度的扇区b将其接触干燥。 通过在直径较大的以下大直径圆筒的表面上的干燥丝上施加到幅材上的高速干燥气体喷嘴，将幅材蒸发干燥和/或通过干燥 在幅材大于约180度的扇区a上大于约2μm，而幅材位于外曲线侧。 待干燥的纸幅通过负压的吸辊的扇形部分c，同时将纸幅支撑在外侧曲线侧的干燥丝线上。 吸辊的扇形体的大小具有大于约160°的大小，并且吸辊的直径小于接触干燥筒的直径。

公开(公告)号：US5534116A

公开(公告)日：1996-07-09

申请号：US326581

申请日：1994-10-20

申请人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

发明人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

IPC分类号： D21F3/04 ,  D21F7/00

CPC分类号： D21F7/001 ,  D21F3/04

摘要： The invention relates to a closed press section in a paper machine and comprises a compact combination of press rolls. Several of the rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band fabric, means for conditioning of the band and/or safety devices are provided, by whose means an adequate operation of the transfer band fabric is maintained.

公开(公告)号：US5393383A

公开(公告)日：1995-02-28

申请号：US25190

申请日：1993-03-02

申请人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

发明人： Mikko Karvinen ,  Reima Kerttula ,  Jorma Laapotti ,  Juhani Pajula

IPC分类号： D21F3/04 ,  D21F7/00

CPC分类号： D21F7/001 ,  D21F3/04

摘要： The invention relates to a closed press section in a paper machine and comprises a compact combination of press rolls. Several of the rolls define press nips with each other, between which nips the web has a closed draw supported by the face of a fabric. The press section has a center roll in connection with which a press nip or press nips are provided. A closed loop of a transfer band is passed around the center roll. The web is transferred on an outer face of the transfer band after the last press nip in the compact combination of rolls as a closed and constantly supported draw onto a drying wire in a drying section following after the press section. The transfer band loop is made of a transfer band fabric that substantially does not receive water and does not rewet the web. The web-adhesion properties of the outer face of the transfer band fabric are chosen so that, after the last nip, the web follows the transfer band fabric, and so that the web can be transferred as a fully closed draw onto the drying wire. In connection with the loop of the transfer band fabric, means for conditioning of the band and/or safety devices are provided, by whose means an adequate operation of the transfer band fabric is maintained.

摘要翻译： 本发明涉及一种造纸机中的封闭压榨部，并且包括压辊的紧凑组合。 辊中的几个定义了相互压制的压力，在这些辊之间，纸幅具有由织物的表面支撑的封闭的画幅。 压榨部分具有中心辊，与其相连，设有压榨压区或压榨压区。 传送带的闭环绕中心辊。 在紧密组合的辊之间的最后一个压榨辊隙之后，将纸幅作为封闭且持续支撑的牵引力转印到转印带的外表面上，在牵引部之后的干燥部分中的干燥丝线上。 传送带环由传送带织物制成，其基本上不接收水并且不会再次润湿网。 选择转印带织物的外表面的网粘附性能，使得在最后的压区之后，幅材跟随转印带织物，并且使得幅材可以作为完全封闭的拉丝转印到干燥丝上。 结合传送带织物的环路，提供用于条带和/或安全装置调节的装置，通过它们的方式维持传送带织物的适当操作。

公开(公告)号：US5653041A

公开(公告)日：1997-08-05

申请号：US360224

申请日：1994-12-20

申请人： Antti Ilmarinen ,  Antti Kuhasalo ,  Pertti Heikkila ,  Heikki Ilvespaa ,  Jouko Yli-Kauppila ,  Ilkka Jokioinen ,  Matti Korpela ,  Mikko Karvinen ,  Pekka Taskinen ,  Henrik Petterson ,  Vaino Sailas ,  Dick Parker

发明人： Antti Ilmarinen ,  Antti Kuhasalo ,  Pertti Heikkila ,  Heikki Ilvespaa ,  Jouko Yli-Kauppila ,  Ilkka Jokioinen ,  Matti Korpela ,  Mikko Karvinen ,  Pekka Taskinen ,  Henrik Petterson ,  Vaino Sailas ,  Dick Parker

IPC分类号： D21F5/04 ,  D21F5/18 ,  F26B11/02

CPC分类号： D21F5/184 ,  D21F5/042 ,  D21F5/044 ,  D21F5/182

摘要： A method and device for drying a paper web wherein the paper web is supported on a drying wire without long open draws of the web. The paper web is contact-dried by pressing it with the drying wire onto a face of a contact-drying cylinder whose diameter is greater than about 1.5 m on a sector b whose magnitude is greater than about 180.degree.. The web is evaporation-dried as blowing-on drying and/or as through-drying by means of high-velocity drying-gas jets applied to the web on the drying wire on the face of the following large-diameter cylinder whose diameter is greater than about 2 m on a sector a having a magnitude greater than about 180.degree. while the web is on the side of the outside curve. The web to be dried is passed over a sector c of the suction roll which is subjected to negative pressure while the web is supported on the drying wire at the side of the outside curve. The magnitude of the sector of the suction roll has a magnitude greater than about 160.degree. and the diameter of the suction roll is less than the diameter of the contact-drying cylinder.

摘要翻译： 一种用于干燥纸幅的方法和装置，其中纸幅被支撑在干燥丝上，而不需要幅材的长时间打开。 通过用烘干线将纸幅通过其直径大于约1.5μm的接触干燥筒的面积大于约180度的扇区b将其接触干燥。 通过在直径较大的以下大直径圆筒的表面上的干燥丝上施加到幅材上的高速干燥气体喷嘴，将幅材蒸发干燥和/或通过干燥 在幅材大于约180度的扇区a上大于约2μm，而幅材位于外曲线侧。 待干燥的纸幅通过负压的吸辊的扇形部分c，同时将纸幅支撑在外侧曲线侧的干燥丝线上。 吸辊的扇形体的大小具有大于约160°的大小，并且吸辊的直径小于接触干燥筒的直径。

公开(公告)号：US4464226A

公开(公告)日：1984-08-07

申请号：US378019

申请日：1982-05-13

申请人： Mikko Karvinen

发明人： Mikko Karvinen

IPC分类号： D21F3/02 ,  D21F3/06

CPC分类号： D21F3/0209

摘要： A dewatering press section for a paper or cardboard web includes a press roll having a wide pressing zone over which a belt is provided to run guided by guide rollers with the web being arranged to run in the pressing zone in compression between the press roll and the belt. At least one fabric runs in the pressing zone and acts on a respective face of the web. A pressure transmitting device has a surface which overlies the belt substantially in the pressing zone. According to the invention, ultrasonic field generators are provided in association with the pressure transmitting device surface for applying an ultrasonic field substantially in the pressing zone such that the friction between the surface of the pressure transmitting device and the belt is substantially reduced. The ultrasonic field generators can operate at a single frequency, at a plurality of discrete frequencies or may emit a continuous spectrum of frequencies and the intensity of the ultrasonic field is selected such that in addition to reducing the friction between the belt and the surface of the pressure transmitting device, the ultrasonic field will also substantially promote the removal of water from the web within the pressing zone as well as the transfer of water removed from the web into the press fabric or fabrics.

摘要翻译： 用于纸或纸板幅材的脱水压榨部分包括具有宽压区的压榨辊，在所述压榨辊上设置带，以由导辊所引导的带运行，其中纸幅被布置成在压榨辊和挤压辊之间的压缩区域中运行 带。 至少一个织物在挤压区域中运行并且作用在幅材的相应面上。 压力传递装置具有基本上在压制区域中的皮带上的表面。 根据本发明，与压力传递装置表面相关联地提供超声场发生器，用于施加基本上在挤压区域中的超声场，使得压力传递装置的表面与带之间的摩擦力大大降低。 超声场产生器可以以单个频率，多个离散频率工作，或者可以发射连续的频谱，并且选择超声波场的强度，使得除了减小带与表面之间的摩擦之外， 压力传递装置，超声波场也将基本上促进从压榨区域内的纤维网上的水的去除以及将从纤维网移除的水转移到压榨织物或织物中。

公开(公告)号：US4931143A

公开(公告)日：1990-06-05

申请号：US735947

申请日：1985-05-20

申请人： Mikko Karvinen ,  Jorma Laapotti

发明人： Mikko Karvinen ,  Jorma Laapotti

IPC分类号： D21F3/02 ,  D21F3/04

CPC分类号： D21F3/045 ,  D21F3/04

摘要： A press section of a paper machine includes, in the direction of web run, at least three successive, separate press nips for dewatering a web, the web passing between the nips in a closed draw. The web is dewatered in the first nip through both of its faces. The press section includes at least one upper fabric and lower fabrics, the first fabrics in the direction of web run being water-receiving fabrics arranged such that one of the first fabrics acts as a press fabric in the first nip while the other of the first fabrics acts as a press fabric both in the first as well as in the second nip. Of the second fabrics in the direction of web run, the upper fabric is a water-receiving press fabric while the second lower fabric is a substantially non-water receiving transfer fabric or belt on which the web is transferred from the third press nip to the following drying section as a closed draw. The third separate press nip comprises an extended-nip press, the length of the nip zone thereof being substantially larger than the lengths of the zones of the preceding roll nips. The web runs through the nip zone of the extended-nip press supported on its bottom side by the substantially non-water receiving transfer fabric, the upper water-receiving fabric being pressed against the other side of the web.

摘要翻译： 造纸机的压榨部分包括至少三个连续的单独的压榨辊，用于使纸幅脱水，纸幅在封闭的牵引中通过夹头之间。 纸幅通过其两个表面在第一辊隙中脱水。 压榨部分包括至少一个上部织物和下部织物，第一织物沿卷筒纸运行方向是水接收织物，其布置成使得第一织物中的一个织物在第一辊隙中起挤压织物的作用，而第一织物中的第一织物 织物在第一和第二压区中都起压力织物的作用。 在织物运行方向上的第二织物中，上织物是水接受压榨织物，而第二下织物是基本上非水接收的转移织物或带，其上幅材从第三压榨压区转移到 以下干燥段作为封闭抽油。 第三分开的压榨压区包括延伸压区压区，其压区的长度大致大于先前辊压区的长度。 纸幅通过基本上非水接收的转印织物在其底侧上延伸延伸压区印刷机的压区，上部接收水平的织物被压靠在幅材的另一侧上。