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    • 136. 发明授权
    • Device for preparing a glue for corrugated board
    • 瓦楞纸板胶水准备装置
    • US6062723A
    • 2000-05-16
    • US334346
    • 1999-06-16
    • Anton de ValkWilliam van der Zanden
    • Anton de ValkWilliam van der Zanden
    • C09J103/02B01F13/10
    • C09J103/02Y10T156/1016
    • The invention provides a process for the preparation of a starch based glue for making corrugated board. The process is carried out in a system which includes a first and relatively large mixing vessel containing a stirrer. A second and smaller mixing vessel is connected to the first vessel via a recirculation path. The second and smaller mixing vessel contains means for exerting a shearing force which is greater than the shearing force exerted in the first and larger mixing vessel. The process is carried out in two steps. A first step is to make a carrier by combining water, starch and a limited amount of lye in the large vessel. A second step adds further amounts of starch, water, borax, and a second shot of lye to the carrier while in the small vessel. Adding lye in two steps is a principal aspect of the invention. If all lye is added in one step, it must be limited to an amount which does not prematurely gelatinize the starch to a level which defeats the glue making.
    • 本发明提供一种制备用于制造瓦楞纸板的淀粉基胶的方法。 该方法在包括含有搅拌器的第一和相对较大的混合容器的系统中进行。 第二和较小的混合容器通过再循环路径连接到第一容器。 第二和较小的混合容器包含施加大于施加在第一和更大的混合容器中的剪切力的剪切力的装置。 该过程分两步进行。 第一步是通过在大容器中混合水,淀粉和有限量的碱液来制造载体。 第二步在小容器中向载体添加更多量的淀粉,水,硼砂和第二次碱液。 两步添加碱液是本发明的主要方面。 如果在一个步骤中加入所有碱液,则必须将其限制在不将淀粉过早糊化至不能制造胶水的量。
    • 139. 发明授权
    • Swollen starches as papermaking additives
    • 膨胀淀粉作为造纸添加剂
    • US5620510A
    • 1997-04-15
    • US493881
    • 1995-06-23
    • Merle J. MentzerEduardo A. Piazza
    • Merle J. MentzerEduardo A. Piazza
    • C08B30/12C09D103/02C09J103/02D21H17/28D21H23/18
    • C08B30/12C09J103/02D21H17/28D21H23/18
    • A wet end additive composition which is used as a sizing agent in a papermaking process, the composition comprising a two phase suspension of swollen starch having a dry substance from about 0.5 to about 30% by weight, a cooked swollen volume from about 1.6 ml./gram to about 100 ml./gram and cooked solubles from about 0.5% to about 50% by weight. The composition is prepared starting with a starch slurry having a relatively low concentration (dry substance) of starch. The slurry is subjected to carefully controlled swelling conditions (temperature and pH) which can vary depending upon the type of starch employed. The dry substance of the slurry also may vary depending upon whether a continuous or batch process is employed. The composition is used in a papermaking process by adding it to the furnish after the refining stage.
    • 在造纸方法中用作施胶剂的湿端添加剂组合物,所述组合物包含溶胀淀粉的两相悬浮液,其具有约0.5至约30重量%的干燥物质,约1.6ml的蒸煮体积。 /克至约100毫升/克,煮熟的可溶物为约0.5重量%至约50重量%。 从具有较低浓度(干物质)淀粉的淀粉浆料开始制备组合物。 将浆料经受精心控制的溶胀条件(温度和pH),其可以根据所用淀粉的类型而变化。 浆料的干物质也可以根据是否使用连续或间歇方法而变化。 该组合物在造纸过程中用于在精炼阶段后将其加入到配料中。