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8 条记录 (耗时 0.026 秒)

    Apparatus for simulating processing parameters and predicting variables in a papermaking operation including sequential pulsation, gravity and vacuum drainage, fines retention and paper formation
    1.
    发明授权
    Apparatus for simulating processing parameters and predicting variables in a papermaking operation including sequential pulsation, gravity and vacuum drainage, fines retention and paper formation 失效
    用于模拟加工参数和在造纸操作中预测变量的装置，包括顺序脉动，重力和真空排水，细粉保留和纸张形成

    公开(公告)号：US5314581A

    公开(公告)日：1994-05-24

    申请号：US805266

    申请日：1991-12-10

    申请人： John T. Lin ,  Michael A. Schuster ,  Richard A. Hobirk ,  Alan J. Schellhamer

    发明人： John T. Lin ,  Michael A. Schuster ,  Richard A. Hobirk ,  Alan J. Schellhamer

    IPC分类号： D21G9/00 ,  G01N11/02 ,  G01N33/34 ,  D21C7/00 ,  G01N11/00

    CPC分类号： D21G9/00 ,  G01N11/02 ,  G01N33/343

    摘要： An apparatus and method to simultaneously evaluate the drainage, retention and formation characteristics of paper pulp comprising mixing the paper pulp furnish in the top chamber of the apparatus, releasing the furnish into a middle chamber via a valve having a cone shaped structure for even distribution of the furnish onto a wire screen, and utilizing a time delay before opening a vent valve in order to attenuate impingement forces. The apparatus utilizes a rotating blade under the wire screen to duplicate the pulsation forces of full scale papermaking equipment, an externally applied means to assist in the removal of water similar to a paper machine couch roll. Data generated during the foregoing steps is fed into a computer to evaluate the entire free water drainage process of the furnish. The device is able to set parameters to simulate the water removal process on most paper machines via level control and duration of pertinent variables.

    摘要翻译： 一种同时评估纸浆的排水，保留和形成特性的装置和方法，包括将纸浆配料混合在装置的顶部室中，通过具有锥形结构的阀将配料释放到中间室中，以便均匀分布 配料到丝网上，并且在打开排气阀之前利用时间延迟以便减弱冲击力。 该设备利用在丝网下方的旋转刀片来复制全尺寸造纸设备的脉动力，一种外部施加的装置，以帮助类似于造纸机床上的卷筒纸移除水。 在上述步骤期间产生的数据被馈送到计算机中以评估配料的整个自由排水过程。 该设备能够设置参数以通过水平控制和相关变量的持续时间来模拟大多数造纸机上的除水过程。

    Papermaking using cationic starch and carboxymethyl cellulose or its additionally substituted derivatives
    3.
    发明授权
    Papermaking using cationic starch and carboxymethyl cellulose or its additionally substituted derivatives 失效
    造纸使用阳离子淀粉和羧甲基纤维素或其另外取代的衍生物

    公开(公告)号：US5061346A

    公开(公告)日：1991-10-29

    申请号：US240774

    申请日：1988-09-02

    申请人： Thomas E. Taggart ,  Michael A. Schuster ,  Alan J. Schellhamer

    发明人： Thomas E. Taggart ,  Michael A. Schuster ,  Alan J. Schellhamer

    IPC分类号： D21H17/00 ,  D21H17/27 ,  D21H17/29

    CPC分类号： D21H17/27 ,  D21H17/00 ,  D21H17/29

    摘要： A process of making paper by forming a paper furnish comprised of cellulosic fibers or cellulosic fibers and mineral filler material suspended in water, depositing the furnish on a papermaking wire, and forming a sheet out of the solid components of the furnish while carried on the wire, the improvement wherein there is mixed into the furnish, prior to its being deposited on the wire, about 0.50 to 5 percent of cationic starch (based on the dry weight of total solids in the furnish) followed by about 5 to 20 percent of a water soluble carboxymethyl) cellulose (based on the weight of the cationic starch).

    摘要翻译： 通过形成由纤维素纤维或纤维素纤维构成的纸配料和悬浮在水中的矿物填充材料制成纸的方法，将配料沉积在造纸线上，以及在配线的同时承载在配线上的板材上形成纸 改进之处在于，在将其沉积在金属丝上之前，将约0.50％至5％的阳离子淀粉（基于配料中的总固体的干重），然后约5％至20％ 水溶性羧甲基纤维素（基于阳离子淀粉的重量）。