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    • 8. 发明申请
    • METHOD AND APPARATUS IN THE SURFACE SIZING OF A PAPER OR BOARD WEB
    • 纸张或纸板表面尺寸的方法和装置
    • WO2004109015A2
    • 2004-12-16
    • PCT/FI2004000345
    • 2004-06-07
    • METSO PAPER INCLIPPONEN JUHAPAKARINEN PEKKAPAKARINEN JUHAHOLOPAINEN KARIVESTOLA JUHANITUOMI ARTO
    • LIPPONEN JUHAPAKARINEN PEKKAPAKARINEN JUHAHOLOPAINEN KARIVESTOLA JUHANITUOMI ARTO
    • D21H17/28D21H21/16D21H23/22D21H23/70D21H25/08
    • D21H23/22D21H17/28D21H21/16D21H23/70D21H25/08
    • The invention relates to a method and an apparatus in the surface sizing of a paper or board web. In the method according to the invention, surface size, such as a starch solution, is applied by means of an applicator device (1) to at least one side of the web (W) to be surface sized, and in which surface sizing is performed per one side of said web (W) in one or more stages. In connection with the application of surface size, a pressure effect is applied to the web (W) by subjecting the web (W) to an underpressure and/or to an overpressure such that, by means of said pressure effect, surface size is forced to penetrate into the web (W) into the pores of the web. Most advantageously, in the pores of the web (W) an underpressure is created that sucks surface size applied to the surface of the web from the surface of the web (W) into the pores in the inner layers. In that connection, surface size is applied to a first side (W1) of the web and a vacuum effect is applied to the opposite side, i.e. a second side (W2), of the web (W) to cause air to flow through the web (W) such that surface size moves from the first side (WI) of the web in the direction of the second side (W2) of the web into the web (W). In a corresponding manner, both sides of the web (W) can be treated in successive stages.
    • 本发明涉及纸或纸板的表面施胶方法和设备。 在根据本发明的方法中,通过施用装置(1)将表面尺寸(例如淀粉溶液)施加到幅材(W)的至少一侧以被表面定尺寸,并且其中表面施胶是 在一个或多个阶段中在所述网(W)的每一侧执行。 与施加表面尺寸相关联,通过使幅材(W)经受负压和/或超压使得幅材(W)施加压力效应,使得通过所述压力效应强制表面尺寸 以将纤维网(W)渗入纤网的孔中。 最有利的是,在幅材(W)的孔中产生负压,其将从幅材(W)的表面施加到幅材表面的表面尺寸吸收到内层中的孔中。 在这方面,表面尺寸被施加到幅材的第一侧(W1),并且真空效应被施加到幅材(W)的相对侧,即第二侧(W2)),以使空气流过 腹板(W),使得表面尺寸从腹板的第一侧(WI)沿着腹板的第二侧(W2)的方向移动到腹板(W)中。 以相应的方式,可以连续处理幅材(W)的两侧。
    • 10. 发明申请
    • FORMING SECTION WITH METAL BELT
    • 金属带形成部分
    • WO2010034346A1
    • 2010-04-01
    • PCT/EP2008/062854
    • 2008-09-25
    • METSO PAPER, INC.PIHKO, RikuPAKARINEN, Pekka
    • PIHKO, RikuPAKARINEN, Pekka
    • D21F9/00D21F3/02
    • D21F9/003D21F3/0209
    • A forming section forming a fibrous web is described, which forming section comprises a forming wire loop (1) for forming the fibrous web from a fiber containing suspension which is injected to the forming wire by a head box. A metal belt loop (2) is arranged- to press the web and the forming wire (11) between the metal belt (21) of that loop and a support surface (12), which can be a roll. Using a metal belt allows the generation of a long nip using appropriate metal belt arrangement and belt tension. The metal belt maybe arranged to contact the fibrous web, and the forming wire is arranged to contact the support surface. In other words, the web is sandwiched between the metal belt and forming wire, wherein the metal belt can be arranged to press the fibrous web from above pressing the liquid of the suspension towards the forming wire which is arranged below the web. In this way, gravity can be used to support water removal, and a more symmetric web can finally be obtained.
    • 描述形成纤维网的成形部分,其形成部分包括用于通过头箱注入到成形网中的含纤维混合物形成纤维网的成形线环(1)。 设置金属带环(2),以将卷材和成形网(11)压在该环的金属带(21)和可以是辊的支撑表面(12)之间。 使用金属带允许使用适当的金属带布置和带张力产生长压区。 金属带可以布置成接触纤维网,并且成形网布置成接触支撑表面。 换句话说,网状物被夹在金属带和成形网之间,其中金属带可以布置成从上方挤压纤维网,将悬浮液的液体压向布置在网下面的成形网。 以这种方式,重力可以用于支持除水,最后可以获得更对称的网。