PROCESS FOR THE PRODUCTION OF PAPER, BOARD AND CARDBOARD HAVING HIGH DRY STRENGTH
    7.
    发明申请
    PROCESS FOR THE PRODUCTION OF PAPER, BOARD AND CARDBOARD HAVING HIGH DRY STRENGTH 失效
    生产具有高干燥强度的纸板,纸板和纸板的工艺

    公开(公告)号:US20110048660A1

    公开(公告)日:2011-03-03

    申请号:US12990763

    申请日:2009-05-14

    IPC分类号: D21H17/33 D21H17/37 D21H17/45

    CPC分类号: D21H21/18 D21H17/42 D21H17/44

    摘要: Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C.

    摘要翻译: 通过分开加入水溶性阳离子聚合物和具有不大于10mol%的酸基含量的​​水不溶性聚合物的水分散体或通过单独添加水溶性聚合物的水分散体,生产具有高干燥强度的纸,纸板和纸板的方法, 非离子聚合物的水性分散体,其分散体已经被制成阴离子型,到纸料中,排出纸料并干燥纸制品。 优选地,将聚合物加入到具有至少40℃的温度的纸料中

    Production of paper, card and board
    8.
    发明授权
    Production of paper, card and board 有权
    生产纸张,纸牌和纸板

    公开(公告)号:US08753479B2

    公开(公告)日:2014-06-17

    申请号:US13526710

    申请日:2012-06-19

    摘要: The invention relates to a process for the production of paper, card and board, including the steps of draining a filler-containing paper stock, having a certain fibrous concentration and containing at least one water-soluble amphoteric copolymer, with sheet formation in a wire section, then pressing the paper in a press section, diluting the paper stock to a fibrous concentration in the range from 5 to 15 g/l, draining the diluted paper stock to form a sheet, and then pressing the sheet in the press section to a solids content G(x) wt % or greater, such that G(x) computes according to: G(x)=48+(x−15)·0.4, where x is the numerical value of a filler content of the dry paper, card or board (in wt %), and G(x) is a numerical value of the minimal solids content (in wt %) to which the sheet is pressed.

    摘要翻译: 本发明涉及一种生产纸张,卡片和纸板的方法,包括以下步骤:排出具有一定纤维浓度并含有至少一种水溶性两性共聚物的含有填料的纸料, 然后在压榨部中按压纸张,将纸料稀释至5至15g / l范围内的纤维浓度,排出稀释的纸料以形成片材,然后将压片部分中的片材按压至 固体含量G(x)wt%以上,使得G(x)根据G(x)= 48 +(x-15)·0.4计算,其中x是干燥的填料含量的数值 纸张,卡片或纸板(以重量%计),G(x)是片材被压制的最小固体含量(以重量%计)的数值。

    Process for the production of paper, board and cardboard having high dry strength
    10.
    发明授权
    Process for the production of paper, board and cardboard having high dry strength 失效
    用于生产干燥强度高的纸张,纸板和纸板的方法

    公开(公告)号:US08597466B2

    公开(公告)日:2013-12-03

    申请号:US12990763

    申请日:2009-05-14

    IPC分类号: D21H11/00

    CPC分类号: D21H21/18 D21H17/42 D21H17/44

    摘要: Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C.

    摘要翻译: 通过分开加入水溶性阳离子聚合物和具有不大于10mol%的酸基含量的​​水不溶性聚合物的水分散体或通过单独添加水溶性聚合物的水分散体,生产具有高干燥强度的纸,纸板和纸板的方法, 非离子聚合物的水性分散体,其分散体已经被制成阴离子型,到纸料中,排出纸料并干燥纸制品。 优选地,将聚合物加入到具有至少40℃的温度的纸料中