Method for producing surface-treated paper
    1.
    发明授权
    Method for producing surface-treated paper 失效
    生产表面处理纸的方法

    公开(公告)号:US06193840B1

    公开(公告)日:2001-02-27

    申请号:US09383811

    申请日:1999-08-26

    IPC分类号: D21F1100

    CPC分类号: D21G9/009 D21F5/04 D21G1/00

    摘要: A method for producing surface-treated paper, in particular of fine paper, and a dry end of a paper machine that makes use of the method. A paper web that has been dewatered by pressing is dried in the forward dryer section, in which drying energy is applied to the paper web over the entire length of the forward dryer section asymmetrically in the z-direction from the side of the bottom face of the web. This step is carried out by a number of successive groups with single-wire draw that are open downward. In this manner, shrinkage of the web both in the machine direction and in the cross direction is reduced or at least partially prevented, which shrinkage tends to take place when the dry solids content becomes higher. Paper broke is removed from underneath the drying groups that are open downward substantially by the force of gravity onto the broke conveyor placed underneath. The paper web which has a tendency of curling because of the asymmetric forward-drying is passed to the finishing section where it is finished while it is moistened and/or worked plastically so that the tendencies of curling that arose in the web in the forward drying stage are substantially reduced.

    摘要翻译: 一种用于生产表面处理过的纸,特别是高级纸的方法,以及使用该方法的造纸机的干燥端。 已经通过压制脱水的纸幅在前部干燥部中被干燥,其中干燥能量在前方干燥部的整个长度上沿着Z方向从底面的侧面向z方向施加到纸幅上 网络。 该步骤由多个连续的组进行,其中单线绘制向下敞开。 以这种方式,幅材在机器方向和横向方向上的收缩被减少或至少部分地被防止,当干固体含量变高时,倾向于发生收缩。 干燥组下面基本上通过重力向下打开到放置在下面的破碎输送机上的干燥组下面,将纸张断开。 由于不对称的前向干燥而具有卷曲倾向的纸幅被传送到精加工部分,在其完成时,其被加湿和/或塑化加工,使得在正向干燥中在卷筒纸中产生的卷曲倾向 阶段大大减少。

    Dry end of a paper machine
    2.
    发明授权
    Dry end of a paper machine 失效
    造纸机的干燥端

    公开(公告)号:US6126787A

    公开(公告)日:2000-10-03

    申请号:US40097

    申请日:1998-03-17

    CPC分类号: D21G9/009 D21F5/04 D21G1/00

    摘要: A method for producing surface-treated paper, in particular of fine paper, and a dry end of a paper machine that makes use of the method. A paper web that has been dewatered by pressing is dried in the forward dryer section, in which drying energy is applied to the paper web over the entire length of the forward dryer section asymmetrically in the z-direction from the side of the bottom face of the web. This step is carried out by a number of successive groups with single-wire draw that are open downward. In this manner, shrinkage of the web both in the machine direction and in the cross direction is reduced or at least partially prevented, which shrinkage tends to take place when the dry solids content becomes higher. Paper broke is removed from underneath the drying groups that are open downward substantially by the force of gravity onto the broke conveyor placed underneath. The paper web which has a tendency of curling because of the asymmetric forward-drying is passed to the finishing section where it is finished while it is moistened and/or worked plastically so that the tendencies of curling that arose in the web in the forward drying stage are substantially reduced.

    摘要翻译: 一种用于生产表面处理过的纸,特别是高级纸的方法,以及使用该方法的造纸机的干燥端。 已经通过压制脱水的纸幅在前部干燥部中被干燥,其中干燥能量在前方干燥部的整个长度上沿着Z方向从底面的侧面向z方向施加到纸幅上 网络。 该步骤由多个连续的组进行,其中单线绘制向下敞开。 以这种方式,幅材在机器方向和横向方向上的收缩被减少或至少部分地被防止,当干固体含量变高时,倾向于发生收缩。 干燥组下面基本上通过重力向下打开到放置在下面的破碎输送机上的干燥组下面,将纸张断开。 由于不对称的前向干燥而具有卷曲倾向的纸幅被传送到精加工部分,在其完成时,其被加湿和/或塑化加工,使得在正向干燥中在卷筒纸中产生的卷曲倾向 阶段大大减少。

    Method and device for enhancing the run of a paper web in a paper machine
    3.
    发明授权
    Method and device for enhancing the run of a paper web in a paper machine 失效
    用于增强纸机中纸幅运行的方法和装置

    公开(公告)号:US5865955A

    公开(公告)日:1999-02-02

    申请号:US726195

    申请日:1996-10-04

    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.

    摘要翻译: 一种用于增强造纸机中的纸幅运行的方法和装置,其中通过在至少一个压榨压区中压榨纸幅而从纸幅中除去水分,并且在压榨之后,纸幅在至少一个干燥器组中干燥,施加冲击干燥 。 纸幅沿着基本上线性的路径引导,或者通过在干燥器组中使用大的曲线半径进行冲击干燥。 在干燥阶段,在冲击干燥之后,在至少一个具有正常单丝拉丝的烘干机组中干燥纸幅。 幅材从压制阶段到干燥阶段作为封闭的抽出通道,更具体地,从压榨阶段到干燥阶段中单丝牵引的区域,使得幅材始终支撑在至少一个支撑面上。

    Device for threading a paper web
    4.
    发明授权
    Device for threading a paper web 失效
    用于穿线纸的装置

    公开(公告)号:US5837101A

    公开(公告)日:1998-11-17

    申请号:US727839

    申请日:1996-10-02

    IPC分类号: D21G9/00 D21F7/00 D21F7/04

    CPC分类号: D21G9/0072

    摘要: A device for threading a paper web from a dryer section to a finishing device situated after the dryer section in the running direction of the web including a rope threading arrangement. A leader strip is separated from the edge of the paper web in the dryer section and the leader strip is directed between a pair of ropes included in the rope threading arrangement. The leader strip is carried to the finishing device on support of the ropes. To effect the transfer of the leader strip from the drying wire to the rope, at the inlet side of the last drying cylinder in the dryer section, a rope gap is formed out of the ropes and the leader strip, which is supported by the drying wire thereat, is transferred by an air blowing into the rope gap. The leader strip is passed by the ropes over the last drying cylinder to the finishing device.

    摘要翻译: 一种用于将纸幅从干燥器部分穿过位于所述干燥器部分之后的整理装置的装置,所述装置包括绳索穿线装置。 引导条在干燥部中与纸幅的边缘分离,并且引导条被引导到包括在绳索穿线装置中的一对绳索之间。 在支撑钢丝绳的情况下,将带子带到精加工装置。 为了将引导条从干燥线传递到绳索,在干燥部中的最后一个干燥筒的入口侧,由绳索和引导条形成绳索间隙,该条由干燥支撑 电线通过吹入绳索间隙的空气转移。 引导条通过绳索穿过最后一个干燥筒到整理装置。

    Suction roll with turbulence suppression element
    6.
    发明授权
    Suction roll with turbulence suppression element 失效
    吸油辊具有湍流抑制元件

    公开(公告)号:US5024729A

    公开(公告)日:1991-06-18

    申请号:US567106

    申请日:1990-08-14

    IPC分类号: D21F3/10

    CPC分类号: D21F3/10

    摘要: The invention relates to a suction roll (10) comprising a turbulence suppression element (16) located in the vicinity of the end of an external suction pipe (15). The turbulence suppression element (16) comprises at least one sheet member and is fitted relative to the end of the suction pipe (15) in such a way that turbulence in the intake air during the suction phase is substantially prevented and that a low air pressure is thus maintained at a desired, approximately constant value on the inner surface of the roll shell along the entire roll width and the quantity of suction air is also maintained at a desired, approximately constant value through the perforated sections (14) of the roll shell.

    Multi-cylinder dryer for a paper machine with supported draw of web
    7.
    发明授权
    Multi-cylinder dryer for a paper machine with supported draw of web 失效
    多缸干燥机,用于纸张的支撑画幅

    公开(公告)号:US4972608A

    公开(公告)日:1990-11-27

    申请号:US426185

    申请日:1989-10-25

    申请人: Heikki Ilvespaa

    发明人: Heikki Ilvespaa

    IPC分类号: D21F5/04

    CPC分类号: D21F5/042

    摘要: A multi-cylinder dryer for a paper machine having several drying groups situated one after the other, in which drying cylinders are situated one above the other in stacks, preferably in vertical stacks. In subsequent groups, a web is passed from one drying cylinder onto a next drying cylinder by way of a single-wire draw, so that the drying cylinders in the single-wire draw groups are situated outside the loops of their respective drying a wires. The web is passed as a supported draw from one single-wire group to a subsequent single-wire group by using at least two transfer-suction rolls. A first one of the transfer-suction rolls is situated inside a loop of a drying wire of the preceding single-wire draw group. The second or final transfer-suction roll is situated proximate to the first suction roll and inside a loop of a drying wire of the latter or subsequent single-wire draw group, proximate to a first drying cylinder in this subsequent group. Transfer of the web from one wire group to the next wire group takes place with support by a drying wire substantially all the time. At that location, the web is subjected to a difference in pressure that maintains the web in contact with a drying wire, generally a negative pressure being effective from the drying-wire side.

    Guiding an end conduction strip of a web forwardly from a roll
    8.
    发明授权
    Guiding an end conduction strip of a web forwardly from a roll 失效
    从卷轴向前引导纸的端部传导条

    公开(公告)号:US4923567A

    公开(公告)日:1990-05-08

    申请号:US295292

    申请日:1989-01-10

    IPC分类号: D21G9/00

    CPC分类号: D21G9/0063

    摘要: Method and apparatus for guiding and directing an end conduction strip of a web from a smooth-surfaced roll, such as a paper web in a press. The end conduction strip is detached from the smooth surface of the roll and further guided by utilizing a guide plate and air blowing actions. An air jet having sufficiently great impulse is directed against the end conduction strip on the roll surface. The end conduction strip is cut with the aid of this air jet and a leading edge thereof is detached by this air jet from the roll surface. The detached end conduction strip is further guided and conveyed forwardly by a transfer blowing action. This transfer blowing action is directed along the guide plate. An under-pressure field is produced in conjunction with the guide plate, by effect of the blowing action. The effect of this under-pressure field causes the end conduction strip to be further guided in a direction determined by the guide plate.

    Method and device for reduction and equalization of transverse shrinkage
of paper in single-wire draw in a drying section
    9.
    发明授权
    Method and device for reduction and equalization of transverse shrinkage of paper in single-wire draw in a drying section 失效
    用于在干燥部分中单线牵引的纸张横向收缩减少和均衡的方法和装置

    公开(公告)号:US5397438A

    公开(公告)日:1995-03-14

    申请号:US46561

    申请日:1993-04-12

    IPC分类号: D21F1/00 D21F5/04 D21F7/12

    摘要: The present invention relates to a method and device in the draw of a paper web for reduction and equalization of transverse shrinkage of the paper web in the drying section of a paper machine. The lateral areas of the wire running in conjunction with the paper web are provided with a coating adhesion means, whereby, by means of the coating adhesion means, at the drying stage an adhesion force is produced between the lateral areas of the wire and of the paper to prevent transverse shrinkage of the paper web.

    摘要翻译: 本发明涉及一种纸幅牵引方法和装置,用于在造纸机的干燥部分中减少和均衡纸幅的横向收缩。 与纸幅一起运行的电线的横向区域设置有涂层粘合装置,借助于涂层粘合装置,在干燥阶段,在电线的横向区域和 纸以防止纸幅的横向收缩。

    Method and device for drawing a web through a group of drying cylinders
    10.
    发明授权
    Method and device for drawing a web through a group of drying cylinders 失效
    用于通过一组干燥筒拉伸网的方法和装置

    公开(公告)号:US5022163A

    公开(公告)日:1991-06-11

    申请号:US320985

    申请日:1989-03-09

    IPC分类号: D21F3/10 D21F5/04

    摘要: A method in a drying group or groups provided with a single-wire draw in a multi-cylinder dryer of a paper machine in the draw of a web. The multi-cylinder dryer comprises drying cylinders heated by means of steam or equivalent, with the web being pressed by a drying wire against the cylinder faces of these drying cylinders. The multi-cylinder dryer has leading or lower cylinders on which the web runs outside the drying wire which is, for example, a felt. The leading cylinders or rolls are provided with holes passing through a mantle of the leading cylinders or rolls, these holes being fitted to open into an inner space of negative pressure within the leading cylinder or roll and to open, at an opposite end, into grooves provided on a mantle face of the rolls. The negative pressure inside the roll is arranged to be transmitted to the grooves provided on the outer face of the roll mantle, so that an adhesion force is applied to the web through the grooves. In the method, a negative pressure is applied to the entire inside mantle face of the roll, and free flow of air is permitted through the holes from an area above the cylinder and into the interior space within the cylinder. The present invention further concerns a device for use in the single-wire draw of the multi-cylinder dryer of the paper machine, and also to a paper-machine cylinder itself.