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：US5756156A

公开(公告)日：1998-05-26

申请号：US705059

申请日：1996-08-29

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： F26B13/08 ,  D21F5/04 ,  D21G1/00 ,  D21G7/00 ,  D21G9/00 ,  D21H23/70 ,  F26B13/10 ,  F26B13/18 ,  F26B13/30 ,  B05D3/02

CPC分类号： D21F5/04 ,  D21G1/00 ,  D21G9/009 ,  D21H23/70

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：US20060118257A1

公开(公告)日：2006-06-08

申请号：US10555717

申请日：2004-05-05

申请人： Pasi Rajala ,  Robert Havukainen ,  Ville Korhonen ,  Seppo Elijoki ,  Pasi Ahonen ,  Kari Juppi ,  Pasi Kekko ,  Martti Salminen

发明人： Pasi Rajala ,  Robert Havukainen ,  Ville Korhonen ,  Seppo Elijoki ,  Pasi Ahonen ,  Kari Juppi ,  Pasi Kekko ,  Martti Salminen

IPC分类号： D21F5/04

CPC分类号： D21F5/044 ,  D21F5/042 ,  D21F5/187

摘要： A paper web (W) is dried in a forward dryer section (D) of a paper machine in downward open drying groups (G1 . . . G6) that apply single-wire draw. Then, in a finishing section the web (W) is surface-sized in a surface-sizing unit (20) and dried mainly by contact-free drying: partly by airbone web-dryers (31, 32, 34, 36) or by impingement drying. The power of the airbone web-drying/impingement drying is regulated on both sides of the web (W) such that the tendency of curling created in the web (W) in the forward dryer section (D) can be controlled.

摘要翻译： 纸幅（W）在造纸机的前部干燥器部分（D）中以适用于向下开放干燥组（G 1 C 6 C 6） 单线拉丝 然后，在精加工部分中，幅材（W）在表面施胶单元（20）中被表面尺寸化，主要通过无接触干燥而干燥：部分地由空中卷筒纸烘干机（31,32,34,36）或由 冲击干燥。 在卷筒纸（W）的两侧调节风干卷筒纸干燥/冲击干燥的功能，从而可以控制在前干燥部分（D）中的卷筒纸（W）中产生的卷曲倾向。

公开(公告)号：US6126787A

公开(公告)日：2000-10-03

申请号：US40097

申请日：1998-03-17

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： D21F5/04 ,  D21G1/00 ,  D21G9/00 ,  D21H25/06

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。