公开(公告)号：US6038789A

公开(公告)日：2000-03-21

申请号：US79821

申请日：1998-05-15

申请人： Juha Kaihovirta ,  Pekka Pakarinen ,  Matti Luontama

发明人： Juha Kaihovirta ,  Pekka Pakarinen ,  Matti Luontama

IPC分类号： D21F5/00 ,  D21F7/00 ,  D21G1/00 ,  D21G7/00 ,  F26B11/02

CPC分类号： D21F7/00 ,  D21F5/00 ,  D21F5/002 ,  D21F7/008 ,  D21G1/00 ,  D21G7/00

摘要： A method for controlling the curl of paper in which steam treatment and/or moistening of the paper web is/are carried out after the calendering process being performed in the calender. In processes in which calendering is not employed, the curl is controlled in connection with a machine reel-up or in process steps carried out after the machine reel-up. A paper or board machine applying the method includes a headbox, a former, a press, a dryer section and steam boxes, moistening devices, an IR dryer and/or equivalent curl control devices. The steam boxes, moistening devices, IR dryers and/or equivalent curl control devices for the control of the curl are arranged after the calender or, if no calender is employed, in connection with a machine reel-up or a finishing process carried out after the machine reel-up.

摘要翻译： 在砑光机中进行压延处理之后，进行用于控制纸幅卷曲的方法，其中纸幅的蒸汽处理和/或润湿。 在不使用压延的工艺中，卷绕机器与机器卷取机或在机器卷取机之后执行的工艺步骤相联系地进行控制。 应用该方法的纸或纸板机包括流浆箱，前者，压机，干燥部分和蒸汽箱，润湿装置，IR干燥器和/或等效卷曲控制装置。 在压光机之后布置蒸汽箱，润湿装置，IR干燥器和/或用于控制卷曲的等效卷曲控制装置，或者如果不使用压延机，则与机器卷取机或后整理过程相关 机器卷起。

公开(公告)号：US6001421A

公开(公告)日：1999-12-14

申请号：US984141

申请日：1997-12-03

申请人： Pasi Ahonen ,  Jaakko Kallioniemi ,  Juha Kaihovirta ,  Ville Korhonen ,  Matti Luontama

发明人： Pasi Ahonen ,  Jaakko Kallioniemi ,  Juha Kaihovirta ,  Ville Korhonen ,  Matti Luontama

IPC分类号： D21F5/04 ,  D21F9/00 ,  B05D3/02

CPC分类号： D21F9/00 ,  D21F5/04

摘要： A dry end of a paper machine and a method for drying paper in which a paper web to be dried is passed from a press section of the paper machine into a forward dryer section including only single-wire groups with normal single-wire draw. The web is dried from the side of its bottom face in the dryer groups in the forward dryer section. From the forward dryer section, the web is passed into a finishing section in which the web is coated/surface-sized by a coating/surface-sizing device and then dried in an after-dryer by passing through at least one dryer group that applies a normal single-wire draw. Thereafter, the web is calendered and passed to a reeling station. Curling of the web is controlled by the operation or construction of components and/or by assemblies and combinations formed out of these components provided in connection with the forward dryer section and/or the finishing section.

摘要翻译： 造纸机的干燥端和用于干燥纸的方法，其中要干燥的纸幅从造纸机的压榨部分通过仅具有普通单线牵引的单丝组的前部干燥部。 纸幅从其底面的侧面在前干燥器部分的干燥器组中干燥。 从正向干燥器部分，将纸幅进入精加工部分，其中纸幅通过涂布/表面施胶装置被涂布/表面尺寸，然后通过至少一个适用的干燥器组在后烘干机中干燥 正常的单线拉丝。 此后，网被压延并传送到卷取站。 纸幅的卷曲由部件的操作或构造和/或由与前部干燥部和/或整理部相关联地提供的这些部件形成的组件和组合来控制。

公开(公告)号：US06322666B1

公开(公告)日：2001-11-27

申请号：US09253102

申请日：1999-02-19

申请人： Matti Luontama ,  Harri Mustonen ,  Pekka Pakarinen

发明人： Matti Luontama ,  Harri Mustonen ,  Pekka Pakarinen

IPC分类号： D21F106

CPC分类号： D21G9/0027 ,  D21F1/02 ,  D21F1/026 ,  D21F1/028 ,  D21F7/06 ,  Y10S162/11

摘要： A feedback-connected on-line regulation system for a headbox of a paper or board machine. The headbox includes a flow duct for stock suspension or separate flow ducts placed one above the other, each flow duct extending from an inlet header of the headbox into its slice channel. A stock suspension jet is discharged from the slice opening of the slice channel onto the forming wire or into the forming gap formed between forming wires. The regulation system includes a regulator unit and a set value unit. Measurement values are passed from the headbox system to the regulator unit and from the regulator unit, control values are obtained for controlling the actuators of the headbox system. The regulation system also includes an on-line If arrangement for measurement of the dried paper web or the paper web to be dried, and includes measurement of the distribution of fibers in the plane of the paper web. By means of the measurement signal obtained from this measurement arrangement, the actuators of the headbox are controlled by feedback so as to achieve a distribution of fiber orientation and a corresponding MD/CD ratio of strength in accordance with the set value in the paper web to be produced under control of the regulation system.

摘要翻译： 用于纸张或纸板机的流浆箱的反馈连接在线调节系统。 流浆箱包括用于储存悬挂的流动管道或一个放置在另一个上的单独的流动管道，每个流动管道从流浆箱的入口集管延伸到其切片通道中。 股票悬挂射流从切片通道的切片开口排出到成形线上或形成在成形线之间的成形间隙中。 调节系统包括调节器单元和设定值单元。 测量值从流浆箱系统传递到调节器单元，并且从调节器单元获得用于控制流浆箱系统的致动器的控制值。 调节系统还包括用于测量待干燥纸幅或待干燥的纸幅的在线If布置，并且包括在纸幅平面中的纤维分布的测量。 通过从该测量装置获得的测量信号，通过反馈来控制流浆箱的致动器，以便根据纸幅中的设定值实现纤维取向的分布和相应的MD / CD比的强度 在规制制度的控制下生产。