公开(公告)号：US5120400A

公开(公告)日：1992-06-09

申请号：US707451

申请日：1991-05-30

申请人： Jorma Laapotti

发明人： Jorma Laapotti

IPC分类号： D21F3/02 ,  D21F3/04

CPC分类号： D21F3/0281 ,  D21F3/04

摘要： Method and device for intensifying the dewatering of a web in a paper machine press section having a compact roll combination and a separate press. The web is pressed in press nips formed by a compact roll combination. Thereafter, the web is transferred on a paper guide roll onto the outer face of the press felt of the separate press, on which felt the web is transferred into the nip of the separate press. The web runs over the lower sector of the paper guide roll and before the web is transferred into the nip of the separate press, the web as well as the press felt of the separate press are heated by means of heating devices. By means of these devices, the temperature levels both of the web and of the outer face of the press felt of the separate nip which felt reaches contact with the web are raised so that the dewatering is substantially intensified in the separate nip.

摘要翻译： 在具有紧凑辊组合和单独压力机的造纸机压榨部中增强幅材脱水的方法和装置。 在紧凑的辊组合形成的压力辊中压制纤维网。 此后，将纸幅在纸引导辊上转印到分离的压榨机的压榨毛毯的外表面上，在其上感觉到纸幅被转移到分开的压榨机的辊隙中。 纸幅在纸引导辊的下部区域上方移动，并且在纸幅被转移到单独的压榨机的辊隙之前，纸幅以及分开的压榨机的压榨毛毯通过加热装置加热。 通过这些装置，可以提高毛毡与毡片接触的单独辊隙的压榨毛毯的纤维网和外表面的温度水平，使得脱水在单独的辊隙中基本上增强。

公开(公告)号：US4586984A

公开(公告)日：1986-05-06

申请号：US591786

申请日：1984-03-21

申请人： Jorma Laapotti

发明人： Jorma Laapotti

IPC分类号： D21F3/02 ,  D21F3/04

CPC分类号： D21F3/045 ,  D21F3/04

摘要： A press section for a running fibrous web, and a method of pressing therein. The press section comprises a first press zone, means for passing the fibrous web in a closed draw to the first press zone, means for changing running direction of the web after the first press zone to substantially reverse the running direction thereof, a second press zone disposed after the means for changing the running direction of the web, and a central roll forming a part of the first and second press zones, with the first and second press zones being disposed substantially opposite one another about the central press roll and constituting means for compensating compression load and weight of the central press roll, and also comprising means for directing the web in a closed draw out of the press section after the second press zone. The method of the present invention comprises the steps of disposing first and second press zones substantially opposite one another about a central roll, pressing the running web in the first press zone, changing the running direction of the web after the first press zone, directing the web into the second press zone, pressing the web in this second press zone, and directing the running web in a closed draw away from the second press zone.

摘要翻译： 一种用于运行的纤维幅材的压制部分及其中的压制方法。 压榨部包括第一挤压区，用于使纤维网在封闭的牵引中通过到第一挤压区的装置，用于在第一挤压区之后改变幅材的运行方向以使其运行方向基本上反转的装置，第二压榨区 设置在用于改变幅材的运行方向的装置之后，以及形成第一和第二压榨区域的一部分的中心辊，其中第一和第二挤压区域围绕中央压榨辊基本相对地设置，并且构成装置 补偿中央压榨辊的压缩载荷和重量，并且还包括用于在第二压榨区域之后将纤维网在封闭的牵引中引导出挤压部分的装置。 本发明的方法包括以下步骤：将第一和第二挤压区域围绕中心辊基本上相对地布置，在第一压榨区域中挤压行进幅材，在第一压榨区域之后改变幅材的运行方向， 将纸幅压入第二挤压区域，在该第二挤压区域中压制纤维网，并且将运行的纸幅引导离开第二压榨区域的封闭牵引。

公开(公告)号：US4568423A

公开(公告)日：1986-02-04

申请号：US541425

申请日：1983-10-13

申请人： Jorma Laapotti

发明人： Jorma Laapotti

IPC分类号： B30B9/24 ,  D21F3/02 ,  D21F3/00

CPC分类号： D21F3/0218 ,  B30B9/24

摘要： Apparatus for the press treatment of a fiber web in a long or extended press zone includes a first press fabric loop in which a press roll is situated and a press shoe situated within a press belt loop which acts in opposition to the press roll, the latter being supported on a transverse beam. The press roll and press shoe together form an extended press zone through which the web to be pressed is guided. The press shoe includes a pressure chamber isolated from the external environment by sealing members and to which a pressure medium, such as a fluid under pressure, is passed. The pressure chamber acts within the extended press zone on the press belt. According to the invention, the pressure chamber of the press shoe comprises a hydrostatic pressure chamber which, when viewed in the direction of web run, is bounded at its front and rear by hydrodynamic press shoes which function both as sealing elements for the hydrostatic pressure chamber and, additionally, as press-shoe members which produce compression pressures on the press belt and on the web.

摘要翻译： 用于在长或延伸的压榨区域中对纤维幅材进行压榨处理的设备包括：第一压榨织物环，其中压辊位于其中;以及压榨靴，位于压榨带环内，压榨带环与压辊相对，后者 被支撑在横梁上。 压榨辊和压榨靴一起形成延伸的压榨区域，被压榨的纤维网通过该区域被引导。 压力靴包括通过密封构件与外部环境隔离的压力室，压力介质例如压力下的流体通过该压力室。 压力室作用在压榨带上延伸的压榨区域内。 根据本发明，压力靴的压力室包括静压压力室，当从卷筒纸运动的方向观察时，其流体动力压力靴在其前后被界定，其作用为静压压力室的密封元件 另外，作为在压榨带和幅材上产生压缩压力的压靴构件。

公开(公告)号：US06533900B2

公开(公告)日：2003-03-18

申请号：US09782328

申请日：2001-02-13

申请人： Janne Puustinen ,  Samppa Salminen ,  Pertti Heikkilä ,  Ari Puurtinen ,  Antti Poikolainen ,  Jorma Laapotti ,  Mika Viertola

发明人： Janne Puustinen ,  Samppa Salminen ,  Pertti Heikkilä ,  Ari Puurtinen ,  Antti Poikolainen ,  Jorma Laapotti ,  Mika Viertola

IPC分类号： B26D300

CPC分类号： D21F3/045 ,  C04B26/10 ,  C04B41/5001 ,  C04B2103/0046 ,  C04B2111/00637 ,  D21F2/00 ,  D21F7/006 ,  C04B14/022 ,  C04B40/0268 ,  C04B41/488

摘要： A method in a paper machine for transferring a paper web from a wet wire in a former section to a pick-up fabric or an equivalent transfer fabric of a press section, including the steps of forming a pick-up point on the wet wire and separating an edge strip from at least one edge of the web prior to the pick-up point by means of at least one cutting device. The method further includes separating the web from the wet wire and passing the web onto the pick-up fabric at the pick-up point. The method also includes applying a pressure difference to the at least one edge strip through the wet wire or the pick-up fabric at or after the pick-up point to cause the at least one edge strip to either follow the wet wire or become separated from the pick-up fabric after the pick-up point and to be placed in a broke system arranged beneath the paper machine.

摘要翻译： 一种造纸机中的方法，用于将纸幅从前部分的湿丝转印到压榨部的拾取织物或等效转印织物中，包括以下步骤：在湿丝上形成拾取点;以及 通过至少一个切割装置，在拾取点之前将边缘条与幅材的至少一个边缘分离。 该方法还包括将纸从湿线分离并将纸幅在拾取点处将其传送到拾取织物上。 该方法还包括在拾取点之后或之后通过湿线或拾取织物在至少一个边缘条上施加压力差，以使至少一个边缘条跟随湿线或分离 在拾取点之后从拾取织物放置在布置在造纸机下方的破碎系统中。

公开(公告)号：US06432273B1

公开(公告)日：2002-08-13

申请号：US09743080

申请日：2001-01-02

申请人： Petter Honkalampi ,  Jorma Laapotti

发明人： Petter Honkalampi ,  Jorma Laapotti

IPC分类号： D21F300

CPC分类号： D21F3/045 ,  D21F2/00 ,  D21F9/003

摘要： The invention relates to a former-press section (100, 110) of a paper machine and to a method of transferring a web from a former to a press section. Between the former section (100) and the press section (110) there is a pre-press zone (PP) which removes water from the web (W) and through which the web (W) is passed as a closed draw from the former section (100) to the press section (110). The upper wet wire (10) or the equivalent transfer wire (10A) of the former section (100) is passed through the pre-press zone (PP), the web (W) being passed on the lower face of said wire into and through the pre-press zone (PP). Inside the loop of the upper wet wire (10) or of the equivalent transfer wire (10A) and/or inside the loop of the lower wet wire (20) there are transfer devices (15, 15a, 16, 26) based on the use of a pressure difference. The transfer devices (15, 15a, 16, 26) are arranged to operate in connection with threading or an operational malfunction such that the web (W) is separated from the upper wet wire (10) or the equivalent transfer wire.

摘要翻译： 本发明涉及一种造纸机的前压榨部分（100,110）以及将纸幅从前者转移到压榨部分的方法。 在前一部分（100）和压榨部分（110）之间有一个预压区（PP），其从网（W）移除水，并且网（W）通过其从前者 （100）到压榨部（110）。 前部分（100）的上部湿线（10）或等效输送丝（10A）穿过预压区（PP），腹板（W）穿过所述导线的下表面 通过预压区（PP）。 在上部湿线（10）或等效传输线（10A）的环路和/或下部湿线（20）的环路内部，在基于该湿式导线（10）的传输装置（15,15a，16,26） 使用压力差。 传送装置（15,15a，16,26）被布置成与螺纹或操作故障相关联地操作，使得腹板（W）与上部湿线（10）或等效的传输线分离。

公开(公告)号：US06214168B1

公开(公告)日：2001-04-10

申请号：US09375220

申请日：1999-08-16

申请人： Janne Puustinen ,  Samppa Salminen ,  Pertti Heikkilä ,  Ari Puurtinen ,  Antti Poikolainen ,  Jorma Laapotti ,  Mika Viertola

发明人： Janne Puustinen ,  Samppa Salminen ,  Pertti Heikkilä ,  Ari Puurtinen ,  Antti Poikolainen ,  Jorma Laapotti ,  Mika Viertola

IPC分类号： D21F1100

CPC分类号： D21F3/045 ,  C04B26/10 ,  C04B41/5001 ,  C04B2103/0046 ,  C04B2111/00637 ,  D21F2/00 ,  D21F7/006 ,  C04B14/022 ,  C04B40/0268 ,  C04B41/488

摘要： A method in a paper machine for transferring a paper web from a wet wire in a former section to a pick-up fabric or an equivalent transfer fabric of a press section, including the steps of forming a pick-up point on the wet wire and separating an edge strip from at least one edge of the web prior to the pick-up point by means of at least one cutting device. The method further includes separating the web from the wet wire and passing the web onto the pick-up fabric at the pick-up point. The method also includes applying a pressure difference to the at least one edge strip through the wet wire or the pick-up fabric at or after the pick-up point to cause the at least one edge strip to either follow the wet wire or become separated from the pick-up fabric after the pick-up point and to be placed in a broke system arranged beneath the paper machine.

摘要翻译： 一种造纸机中的方法，用于将纸幅从前部分的湿丝转印到压榨部的拾取织物或等效转印织物中，包括以下步骤：在湿丝上形成拾取点;以及 通过至少一个切割装置，在拾取点之前将边缘条与幅材的至少一个边缘分离。 该方法还包括将纸从湿线分离并将纸幅在拾取点处将其传送到拾取织物上。 该方法还包括在拾取点之后或之后通过湿线或拾取织物在至少一个边缘条上施加压力差，以使至少一个边缘条跟随湿线或分离 在拾取点之后从拾取织物放置在布置在造纸机下方的破碎系统中。

公开(公告)号：US6004430A

公开(公告)日：1999-12-21

申请号：US141571

申请日：1998-08-27

申请人： Heikki Ilvespaa ,  Juha Kaihovirta ,  Antti Kuhasalo ,  Jorma Laapotti

发明人： Heikki Ilvespaa ,  Juha Kaihovirta ,  Antti Kuhasalo ,  Jorma Laapotti

IPC分类号： D21F3/04 ,  D21F5/00 ,  D21F5/18 ,  D21F9/02 ,  D21G9/00 ,  D21F11/00

CPC分类号： D21F9/02 ,  D21F3/045 ,  D21F5/00 ,  D21F5/18 ,  D21G9/0063

摘要： A method and device for enhancing the run of a web in a paper machine in which water is removed from the web by pressing the web in at least one press nip and after pressing, the web is dried in at least one dryer group applying impingement drying. The web is guided along a substantially linear path or by using a large curve radius in the dryer group applying impingement drying. In the drying stage, after the impingement drying, the web is dried in at least one dryer group having normal single-wire draw. The web is passed from the pressing stage to the drying stage as a closed draw and more particularly, from the pressing stage to the area with single-wire draw in the drying stage so that the web is constantly supported against at least one support face.

公开(公告)号：US5908536A

公开(公告)日：1999-06-01

申请号：US980993

申请日：1997-12-01

申请人： Heikki Kaasalainen ,  Jukka Kinnunen ,  Jorma Laapotti ,  Nils Soderholm

发明人： Heikki Kaasalainen ,  Jukka Kinnunen ,  Jorma Laapotti ,  Nils Soderholm

IPC分类号： D21F2/00 ,  D21F3/02 ,  D21F3/04

CPC分类号： D21F3/0218 ,  D21F2/00 ,  D21F3/04 ,  D21F3/045

摘要： A paper or board machine and a method for passing a paper or board web from a forming section to a press section in a paper or board machine wherein the web is carried on a first wire in the forming section or transferred to a first wire from a forming wire of the forming section. The web that runs on the first wire is made to adhere in a transfer and pre-press zone to an outside face of a transfer belt which is substantially non-water-receiving. The pre-press zone includes an extended nip defined by an extended-nip roll and a smooth-faced press roll, the extended-nip roll having a hose mantle and a press shoe arranged in a loop of the hose mantle. After this pre-press zone, the web is separated substantially immediately from the wire and passed on support of the transfer belt onto the next press fabric in the press section and/or into the next press nip. In the pre-press zone or zones, a substantial amount of water is removed out of the web substantially in one direction only, and, at the same time, the web is made to adhere reliably to the outside face of the transfer belt.

摘要翻译： 一种纸或纸板机以及将纸或纸板从成形部分送到纸或纸板机中的压榨部分的方法，其中纸幅被承载在成形部分中的第一丝线上或从第一丝线传送到第一丝线 形成部分的线。 在第一丝线上运行的卷材被制成粘附在转印和预压区域到基本上非水接收的转印带的外表面。 预压区域包括由延伸压合辊和平滑的压榨辊限定的延伸辊隙，该延伸压辊具有软管罩和布置在软管罩的环中的压力靴。 在该预压区之后，幅材基本上立即从线分离，并将转印带的支撑件传递到压榨部中的下一个压榨织物上和/或进入下一个压榨压区。 在预压区域或区域中，大量的水仅基本沿一个方向从幅材上除去，并且同时使幅材可靠地粘附到转印带的外表面上。

公开(公告)号：US5662778A

公开(公告)日：1997-09-02

申请号：US540084

申请日：1995-10-06

申请人： Jorma Laapotti

发明人： Jorma Laapotti

IPC分类号： D21F3/02 ,  D21F3/04 ,  D21F3/00

CPC分类号： D21F3/045 ,  D21F3/04

摘要： A press section in a paper machine through which a paper web has a closed and supported draw. The press section has at least two successive separate press nips and dewatering of the paper web is carried out at least in the first one of these press nips, preferably between two press fabrics that receive water. The last press nip in the press section is an equalizing press nip which is separate from the preceding nip and in which no substantial dewatering is performed. The paper web is passed through the equalizing press nip from the preceding dewatering press nip on a transfer belt substantially not receiving water, on its substantially straight run. This run is continued after the equalizing nip as a run of substantially the same direction, on which run, some of the elongation of the paper web in the machine direction is compensated for, which elongation takes place in the equalizing nip, by a difference in speed of the transfer belt.

摘要翻译： 造纸机中的压榨部，纸幅通过该部分具有封闭和支撑的牵引。 压榨部分具有至少两个连续的单独的压榨夹头，并且至少在这些压榨夹头中的第一个中优选在两个接收水的压榨织物之间进行纸幅的脱水。 压榨部中的最后的压榨压区是与前一压区分开的并且不进行实质脱水的均压压榨压区。 纸幅通过基本上不接收水的转印带上的先前脱水压榨辊隙的均匀压榨压区，在其基本上直线运行。 在均匀压区作为基本相同方向的运行之后，继续进行该运行，其中纸幅在机器方向上的一些伸长率补偿了在均匀辊隙中的伸长率， 转印带速度。

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。