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    • 8. 发明公开
    • A method of determining a width of a paper web
    • Verfahren zur Bestimmung der Breite einer Papierbahn
    • EP2644770A1
    • 2013-10-02
    • EP13172953.5
    • 2009-01-28
    • Albany International Corp.
    • Dede, Stacie, R.Pilsbury, Joseph, R.
    • D21F2/00D21F7/00D21F5/18D21F7/08D21F1/00
    • D21F1/0027D21F2/00D21F5/182D21F7/006D21F7/08
    • A method of determining a width of a paper web during manufacturing the paper web in a papermaking machine, comprising the steps of transporting a wet paper web on a forming wire (50) in a machine direction toward a fabric (100) configured to support a wet paper web (75) for dewatering, said fabric comprising a consistently permeable portion (275) and a pair of laterally spaced apart strip portions (250) extending along the fabric (100) in the machine direction, each strip portion (250) being substantially impermeable to air and defining said permeable portion (275) therebetween, whereby the permeable portion (275) is configured to allow air directed thereat to flow therethrough, such that the wet paper web (75) supported only by the permeable portion (275) is dewatered, the wet paper web being formed on the forming wire (50) so as to be wider than the permeable portion (275) of the fabric (100), and engaging the formed wet paper web with the fabric (100) such that only the permeable portion (275) of the fabric (100) receives from the wire (50) a portion of the formed wet paper web (75') having the width corresponding to the permeable portion (275), thereby trimming the formed wet paper web (75') to the width of the permeable portion (275) such that the processed wet paper web (75) extends over the entire width of the permeable portion (275), while outer edge portions of the formed paper web (75') remain on the forming wire (50).
    • 一种在造纸机中制造纸幅时确定纸幅的宽度的方法,包括以下步骤:将沿着机器方向的成形线(50)上的湿纸幅输送到织物(100),所述织物(100)被配置成支撑 用于脱水的湿纸幅(75),所述织物包括一致的可渗透部分(275)和沿机器方向沿着织物(100)延伸的一对侧向间隔开的条状部分(250),每个条带部分(250) 基本上不透气并且在其间限定所述可渗透部分(275),由此可渗透部分(275)构造成允许空气流过其中,使得仅由可渗透部分(275)支撑的湿纸幅(75) 脱水,湿纸幅形成在成形线(50)上以比织物(100)的可渗透部分(275)更宽,并且使形成的湿纸幅与织物(100)接合,使得 只有渗透的p 织物(100)的凹陷(275)从线(50)接收具有对应于可渗透部分(275)的宽度的形成的湿纸幅(75')的一部分,从而修整形成的湿纸幅(75) ')延伸到可渗透部分(275)的宽度,使得经处理的湿纸幅(75)在可渗透部分(275)的整个宽度上延伸,同时形成的纸幅(75')的外边缘部分保持在 成形线(50)。