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.

公开(公告)号：US4923567A

公开(公告)日：1990-05-08

申请号：US295292

申请日：1989-01-10

申请人： Allan Liedes ,  Heikki Ilvespaa ,  Olavi Viitanen

发明人： Allan Liedes ,  Heikki Ilvespaa ,  Olavi Viitanen

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.

公开(公告)号：US5397438A

公开(公告)日：1995-03-14

申请号：US46561

申请日：1993-04-12

申请人： Petri Nyberg ,  Heikki Ilvespaa ,  Kari Holopainen

发明人： Petri Nyberg ,  Heikki Ilvespaa ,  Kari Holopainen

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

CPC分类号： D21F1/0027 ,  D21F5/04 ,  Y10S162/902

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。

公开(公告)号：US5022163A

公开(公告)日：1991-06-11

申请号：US320985

申请日：1989-03-09

申请人： Heikki Ilvespaa ,  Allan Liedes ,  Olavi Viitanen

发明人： Heikki Ilvespaa ,  Allan Liedes ,  Olavi Viitanen

IPC分类号： D21F3/10 ,  D21F5/04

CPC分类号： D21F3/10 ,  D21F3/105 ,  D21F5/04 ,  D21F5/042

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.

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：US5172491A

公开(公告)日：1992-12-22

申请号：US513223

申请日：1990-04-23

申请人： Heikki Ilvespaa ,  Allan Liedes ,  Olavi Viitanen

发明人： Heikki Ilvespaa ,  Allan Liedes ,  Olavi Viitanen

IPC分类号： D21F5/04

CPC分类号： D21F5/042 ,  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 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.

摘要翻译： 一种干燥组中的一种方法，其在纸幅抽出的纸机的多缸干燥机中设置有单线牵引。 多缸干燥机包括通过蒸汽或等同物加热的干燥筒，其中幅材被干燥线压靠在这些干燥筒的圆柱面上。 多气缸干燥器具有引导或下部气缸，在该气缸上，幅材运行在干燥丝线的外面，例如毡。 前导滚筒或滚筒上设置有穿过前导滚筒或滚筒的外壳的孔，这些孔被装配成打开到前导滚筒或滚筒内的负压内部空间，并在另一端打开凹槽 提供在卷的地幔面上。 辊内的负压被布置成传递到设置在辊罩的外表面上的槽，使得通过槽将粘附力施加到幅材上。 在该方法中，对辊的整个内壁施加负压，并且允许空气自由流过来自圆柱体上方的孔并进入气缸内的内部空间。 本发明还涉及用于造纸机的多缸干燥机的单线牵引的装置，以及造纸机筒本身。

公开(公告)号：US5024729A

公开(公告)日：1991-06-18

申请号：US567106

申请日：1990-08-14

申请人： Antti Kuhasalo ,  Olavi Viitanen ,  Heikki Ilvespaa

发明人： Antti Kuhasalo ,  Olavi Viitanen ,  Heikki Ilvespaa

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.

公开(公告)号：US06193840B1

公开(公告)日：2001-02-27

申请号：US09383811

申请日：1999-08-26

申请人： Seppo Elijoki ,  Heikki Ilvespaa ,  Antti Kuhasalo ,  Reima Kerttula

发明人： Seppo Elijoki ,  Heikki Ilvespaa ,  Antti Kuhasalo ,  Reima Kerttula

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。

公开(公告)号：US5416980A

公开(公告)日：1995-05-23

申请号：US808161

申请日：1991-12-13

申请人： Heikki Ilvespaa

发明人： Heikki Ilvespaa

IPC分类号： D21F5/04 ,  D21F7/00 ,  F26B11/02

CPC分类号： D21F5/04 ,  D21F7/008

摘要： The invention is related to a method and a device in the drying section of a paper machine for reducing the tendency of the paper to curl. The paper web is dried on drying cylinders, against whose heated faces the paper web is pressed by means of a drying wire. In the drying section, groups of drying cylinders are used, in which twin-wire draw and/or single-wire draw is/are applied. In the drying section, hot water steam is fed substantially onto the entire width of the paper web, by means of which steam tensions that have been formed or that tend to be formed in the fiber mesh in the paper web are relaxed by means of heat and moisture in the area of their formation or substantially immediately thereafter. Moreover, the transverse curling profile and/or moisture profile of the paper web can be controlled by the steam treatment.

摘要翻译： 本发明涉及一种用于减少纸张卷曲倾向的造纸机干燥部分中的方法和装置。 纸幅在干燥滚筒上干燥，其加热面通过干燥丝压制纸幅。 在干燥部分中，使用一组干燥筒，其中施加双网牵引和/或单线牵引。 在干燥部分中，热水蒸汽基本上被供给到纸幅的整个宽度上，通过它们已经形成或倾向于形成在纸幅中的纤维网中的蒸汽张力通过热量而被松弛 以及其形成区域或其后基本上立即的湿气。 此外，纸幅的横向卷曲轮廓和/或湿度分布可以通过蒸汽处理来控制。

公开(公告)号：US5044094A

公开(公告)日：1991-09-03

申请号：US570129

申请日：1990-08-20

申请人： Heikki Ilvespaa ,  Reima Kerttula ,  Allan Liedes

发明人： Heikki Ilvespaa ,  Reima Kerttula ,  Allan Liedes

IPC分类号： D21F5/04

CPC分类号： D21F5/042

摘要： The invention relates to an apparatus for use in the drying section of a paper machine, which apparatus comprises a drying cylinder group formed by drying cylinders and a roll group formed by rolls, preferably suction rolls located at a different height relative to the drying cylinders. The geometric rotational axis of the roll located in an area between two adjacent drying cylinders in a different height position is spaced away from the center plane between the center axes of the drying cylinders. The surface of the roll, preferably a suction roll, is adapted to be located as close to the surface of the drying cylinder on the web outgoing side of the roll as possible, whereby the free transfer distance of the outgoing side is minimized.