Production of paper, card and board
    1.
    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。

    METHOD FOR PRODUCING PAPER, CARD AND BOARD WITH HIGH DRY STRENGTH
    4.
    发明申请
    METHOD FOR PRODUCING PAPER, CARD AND BOARD WITH HIGH DRY STRENGTH 失效
    用于生产具有高干度强度的纸张,卡片和纸板的方法

    公开(公告)号:US20110308752A1

    公开(公告)日:2011-12-22

    申请号:US13147623

    申请日:2010-02-04

    IPC分类号: D21H17/45 D21H17/43 D21H17/33

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

    摘要: Process for the production of paper, board and cardboard having high dry strength by addition of a water-soluble cationic polymer and of an anionic polymer to a paper stock, draining of the paper stock and drying of the paper products, wherein an aqueous dispersion of at least one anionic latex and at least one degraded starch is used as the anionic polymer.

    摘要翻译: 通过向纸料添加水溶性阳离子聚合物和阴离子聚合物来生产具有高干燥强度的纸,纸板和纸板的方法,排出纸料并干燥纸制品,其中将 使用至少一种阴离子胶乳和至少一种降解淀粉作为阴离子聚合物。

    Method for producing paper, paperboard and cardboard using an uncrosslinked fixing agent during paper stock draining
    10.
    发明授权
    Method for producing paper, paperboard and cardboard using an uncrosslinked fixing agent during paper stock draining 有权
    纸张排水期间使用未交联固定剂生产纸,纸板和纸板的方法

    公开(公告)号:US06576086B1

    公开(公告)日:2003-06-10

    申请号:US09403769

    申请日:1999-11-02

    IPC分类号: D21C2110

    摘要: Paper, board and cardboard are produced by draining paper stock containing interfering substances in the presence of fixing agents by a process in which the fixing agents used are reaction products which are obtainable by reacting amino- and/or ammonium-containing polymers selected from the group consisting of the polymers containing vinylamine units polyalkylene polyamines polyamidoamines ethyleneimine-grafted polyamidoamines which may be crosslinked, polydiallyldimethylammonium chlorides polymers containing dialkylaminoalkylacrylamide units or dialkylaminoalkylmethacrylamide units and polyallylamines and dicyandiamide and formaldehyde condensates with reactive sizes for paper in a weight ratio of polymer to reactive size of from 15,000:1 to 1:1, and the reaction products thus obtainable are used as fixing agents for water-soluble and for water-insoluble interfering substances in the production of paper, board and cardboard from paper stocks containing interfering substances.

    摘要翻译: 纸,纸板和纸板是通过在固定剂存在下排出含有干扰物质的纸原料而制备的,其中所用的固定剂是通过使选自下组的氨基和/或含铵聚合物反应获得的反应产物 由聚合物单体聚亚烷基多胺聚酰氨基亚胺亚甲基亚胺接枝的聚酰氨基胺,其可以是交联的,含二烷基氨基烷基丙烯酰胺单元或二烷基氨基烷基甲基丙烯酰胺单元的聚二烯丙基二甲基氯化铵聚合物和聚烯丙基胺和双氰胺和甲醛缩合物,聚合物与反应性大小的重量比为15,000:1至1:1 ,由此可得到的反应产物用作纸,纸板和纸板的水溶性固定剂和含有干扰物质的纸料的水不溶性干扰物质。