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    • 8. 发明申请
    • METHOD FOR DRYING A PAPER TO BE SURFACE-TREATED, IN PARTICULAR FINE PAPER, IN AN AFTER-DRYER IN A PAPER MACHINE, AND AN AFTER-DRYER IN A PAPER MACHINE FOR CARRYING OUT THE METHOD
    • 用于干燥纸张的纸张,特别是纸张,纸机中的干燥机以及用于实施方法的纸机中的干燥机
    • WO1998004777A1
    • 1998-02-05
    • PCT/FI1997000459
    • 1997-07-29
    • VALMET CORPORATIONKUHASALO, AnttiAHONEN, Pasi
    • VALMET CORPORATION
    • D21F05/04
    • D21F5/04D21F7/00D21G9/009
    • The invention concerns a method for drying a paper to be surface-treated, in particular fine paper, in an after-dryer in a paper machine. In the method the paper web (W) is first dried in the forward dryer section of the paper machine by means of a number of successive groups (R1 ...RN) with single-wire draw that are open downwards on support of a drying wire (115), after which the paper web (W) is finished in a finishing section (D2), in which finishing section (D2) the web is surface-sized or coated. After the surface-sizing or coating, the paper web (W) is dried by means of an upwards open inverted group (Rk) with single-wire draw, in which connection the tendency of curling formed in the paper web (W) in the forward dryer section (D1) can be substantially eliminated and/or compensated for. Further, the invention also concerns a method in which, in the after-dryer, into connection with the dryer groups (R21, R22), hot moist air is fed in order to restrain the evaporation, or hot dry air is fed in order to promote the evaporation from the side of the web that is desirable in view of the control of curling, the air being fed into the desired locations, in which connection the tendency of curling formed in the paper web (W) in the forward dryer section (D1) can be substantially eliminated and/or compensated for. Further, the invention concerns a finishing section in a paper machine for drying a paper to be surface-treated, in particular fine paper, for carrying out the method.
    • 本发明涉及一种在造纸机的干燥器中干燥待表面处理的纸,特别是高级纸的方法。 在该方法中,纸幅(W)首先在造纸机的前部干燥器部分中通过多个连续的组(R1 ... RN)进行干燥,所述连续组(R1 ... RN)具有单线拉丝,其在支撑干燥时向下敞开 丝线(115),之后在精加工部分(D2)中完成纸幅(W),其中织物的表面尺寸或涂层的精加工部分(D2)。 在表面施胶或涂布之后,纸幅(W)通过具有单丝拉丝的向上打开的倒置组(Rk)干燥,其中在纸幅(W)中形成的卷曲趋势在 前进干燥部(D1)可以基本上消除和/或补偿。 此外,本发明还涉及一种方法,其中在后干燥器中与干燥器组(R21,R22)相连,为了抑制蒸发而供给热湿空气,或者加热热空气以便 考虑到卷曲的控制,促进从卷筒纸的侧面的蒸发,空气被送入所需的位置,在该连接中形成在前部干燥器部分中的纸幅(W)中的卷曲的趋势 D1)可以基本上消除和/或补偿。 此外,本发明涉及一种用于干燥待表面处理的纸,特别是高级纸的造纸机中的精加工部分,用于实施该方法。
    • 10. 发明申请
    • METHOD AND DEVICE FOR CONTACT-FREE DRYING OF A PAPER WEB OR EQUIVALENT
    • 用于纸张网络或等同物的无接触干燥的方法和装置
    • WO1997049863A1
    • 1997-12-31
    • PCT/FI1997000387
    • 1997-06-18
    • VALMET CORPORATIONVUORINEN, Vesa
    • VALMET CORPORATION
    • D21F05/18
    • D21F5/185F26B13/104
    • The invention concerns a method in drying and/or cooling of a web. In the method the web (W) is passed over the circumference of a blow drum (10) or equivalent, and the web (W) is dried by means of a drying gas that is blown out of openings (44) that have been made into the mantle (12) of the blow drum (10) into the gap between the outer face of the blow drum (10) and the web (W). A support zone (11) formed by pressurized gas is formed between the outer face of the blow drum (10) and the web (W), and in the method the moistened gas is passed out of the support zone (11) into the interior of the blow drum (10) through openings (46) that have been made into the mantle (12) of the blow drum (10) into a set of exhaust ducts placed inside the blow drum (10). In the method the web (W) to be dried is supported in the lateral areas by means of a revolving edge support (22) placed at each end of the blow drum (10) separate from the blow drum (10), and the support zone (11) is sealed in the running direction of the web (W) by means of the circumferential faces and/or friction faces of the edge supports (22). The invention also concerns a device in drying and/or cooling of a web.
    • 本发明涉及一种幅材干燥和/或冷却方法。 在该方法中,幅材(W)通过吹塑鼓(10)或等同物的圆周,并且纸幅(W)通过从已经制成的开口(44)吹出的干燥气体被干燥 进入吹鼓(10)的地幔(12)进入鼓鼓(10)的外表面和幅材(W)之间的间隙中。 在鼓筒(10)的外表面和腹板(W)之间形成由加压气体形成的支撑区域(11),并且在该方法中,润湿气体从支撑区域(11)流出到内部 通过已经被制成吹风鼓(10)的罩(12)的开口(46)穿过鼓风筒(10)内的放置在吹塑鼓(10)内的一组排气管道。 在该方法中,通过设置在与鼓风鼓(10)分开的鼓筒(10)的每个端部处的旋转边缘支撑件(22)将待干燥的卷筒纸(W)支撑在横向区域中,并且支撑 区域(11)通过边缘支撑件(22)的圆周面和/或摩擦面在卷筒纸(W)的运行方向上被密封。 本发明还涉及一种在幅材的干燥和/或冷却中的装置。