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1. 发明公开

EP0690172A3 Method and assembly for coating a moving web 失效
标题翻译：用于涂覆运行磁带的方法和装置
公开(公告)号：EP0690172A3
公开(公告)日：1997-05-07
申请号：EP95109093.5
申请日：1995-06-13
申请人： VALMET PAPER MACHINERY INC.
发明人： Koskinen, Jukka
IPC分类号： D21H25/16 , D21H23/32
CPC分类号： D21H25/16
摘要： In air-knife coating the coating mix is applied by means of a suitable application method onto the web (1) to be coated and the coating mix is doctored to desired coating thickness by blowing a sharp air jet (7) discharged from the air knife (6) so as to impinge on the web (1). Air-knife doctoring occurs most successfully along the upper boundary of the filter-cake layer which forms in the coating after application. According to the invention, this phenomenon is utilized for coat weight control by adjusting the distance between the point of application and the point of doctoring.

2. 发明公开

EP0690172A2 Method and assembly for coating a moving web 失效
标题翻译： Verfahren und Vorrichtung zur Beschichtung eines laufenden Bandes
公开(公告)号：EP0690172A2
公开(公告)日：1996-01-03
申请号：EP95109093.5
申请日：1995-06-13
申请人： VALMET PAPER MACHINERY INC.
发明人： Koskinen, Jukka
IPC分类号： D21H25/16 , D21H23/32
CPC分类号： D21H25/16
摘要： In air-knife coating the coating mix is applied by means of a suitable application method onto the web (1) to be coated and the coating mix is doctored to desired coating thickness by blowing a sharp air jet (7) discharged from the air knife (6) so as to impinge on the web (1). Air-knife doctoring occurs most successfully along the upper boundary of the filter-cake layer which forms in the coating after application. According to the invention, this phenomenon is utilized for coat weight control by adjusting the distance between the point of application and the point of doctoring.
摘要翻译：在气刀涂布中，通过合适的涂布方法将涂料混合物施加到待涂布的纤维网（1）上，并通过吹入从气刀排出的尖锐的空气喷嘴（7）将涂料混合物制成所需的涂层厚度（6），以便撞击在卷材（1）上。沿着滤饼层的上边界最成功地进行气刀刮刀，其在施涂后在涂层中形成。根据本发明，通过调整施加点与刮涂点之间的距离，可以将该现象用于涂层重量控制。

3. 发明公开

EP0651095A1 Method and assembly for coating a moving web 失效
标题翻译： Verfahren und Vorrichtung zur Beschichtung eines laufenden Bahnes。
公开(公告)号：EP0651095A1
公开(公告)日：1995-05-03
申请号：EP94115045.0
申请日：1994-09-23
申请人： VALMET PAPER MACHINERY INC.
发明人： Paloviita, Petri , Koskinen, Jukka
IPC分类号： D21H25/16 , D21H23/72
CPC分类号： D21H23/72 , D21H25/16
摘要： A method and an assembly for coating a board or paper web (5) with the help of an air knife (4) as the doctoring means comprising a first backing roll (1) which backs the web during the application of the coating mix to the web (5) and a second backing roll (3) around which the web (5) passes after the coat application and which backs the web during the smoothing of the coat with the help of the air knife (4). The invention is based on applying the coating mix to the web (5) with a correct thickness of the coat by means of a slot-orifice applicator apparatus (2). In the applicator apparatus (2) the coating mix flow is directed in a reverse direction to the travel of the web (5) and only a desired portion of the flow is allowed to adhere to the web (5), whereby the critical doctoring process in the region of the air knife (4) can be easily optimized under varying process conditions.
摘要翻译：一种用于在气刀（4）的帮助下涂覆板或纸幅（5）的方法和组件，因为刮刀装置包括第一背衬辊（1），其在将涂层混合物施加到纤维网（5）和第二背衬辊（3），所述纤维网（5）在所述涂层施加之后通过所述第二背衬辊（3），并且在所述涂层的平滑期间借助于所述气刀（4）而将所述纤维网背后。本发明基于通过狭缝孔施加装置（2）将涂层混合物施加到具有适当厚度的涂层的幅材（5）上。在涂抹器装置（2）中，涂层混合物流动与纸幅（5）的行进相反的方向被引导，并且只有流动的期望部分被允许粘附到幅材（5）上，由此临界刮除过程在气刀区域（4）可以在不同的工艺条件下轻松优化。

4. 发明公开

EP0629742A1 A method and assembly for loading a doctor blade 失效转让
标题翻译： Verfahren und Baugruppe zum Laden einer Rakelklinge。
公开(公告)号：EP0629742A1
公开(公告)日：1994-12-21
申请号：EP94105082.5
申请日：1994-03-30
申请人： VALMET PAPER MACHINERY INC.
发明人： Koskinen, Jukka , Mannio, Aaron
IPC分类号： D21H23/34
CPC分类号： D21H25/10 , B05C11/042
摘要： This invention relates to a method and assembly for loading the doctor blade of a doctoring unit used, e.g., in coating a paper web, characterized in that the blade can be loaded close to the edge of the blade without compromising the accuracy of blade profile control. The blade is loaded by means of a backing member (8) having a Z-shaped cross section in which one side of the section forms a base (13), while the middle part forms a waist (18) which turns toward the base (13), and the other side (12) of the shape forms tip (12) pointing to an opposite direction relative to the base (13) and has at its end a tapering edge suited for pressing against the doctor blade (7). This approach is capable of eliminating the sliding movement of the backing member (8) relative to the blade which tends to impair the accuracy of blade pressure control.
摘要翻译：本发明涉及一种用于加载刮刀单元的刮刀的方法和组件，所述刮刀单元用于例如在纸幅的涂布中，其特征在于，所述刀片可以靠近所述刀片的边缘加载而不损害刀片轮廓控制的精度。刀片通过具有Z形横截面的背衬构件（8）装载，其中该区段的一侧形成基部（13），而中间部分形成朝向底部（13）的腰部（18） 13），并且该形状的另一侧（12）形成指向相对于基部（13）相反方向的尖端（12），并且在其端部具有适于压靠刮刀（7）的锥形边缘。这种方法能够消除背衬构件（8）相对于叶片的滑动运动，这倾向于损害叶片压力控制的精度。

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