公开(公告)号：US3947184A

公开(公告)日：1976-03-30

申请号：US523597

申请日：1974-11-14

申请人： Franklin D. Saeva ,  Patrick E. Sharpe

发明人： Franklin D. Saeva ,  Patrick E. Sharpe

IPC分类号： G09F9/30 ,  G02F1/1337 ,  G02F1/28

CPC分类号： G02F1/133719

摘要： A nematic liquid crystalline composition having positive dielectric anisotropy is provided in the homeotropic texture by contact with a layer of an electrically insulating polysiloxane elastomer. An electrical field is then applied parallel to the molecular axes of the nematic resulting in reorientation of the nematic molecules.

公开(公告)号：US6153300A

公开(公告)日：2000-11-28

申请号：US229086

申请日：1994-04-18

申请人： C. Bertil Stromberg ,  Patrick E. Sharpe ,  Louis O. Torregrossa ,  Joseph R. Phillips

发明人： C. Bertil Stromberg ,  Patrick E. Sharpe ,  Louis O. Torregrossa ,  Joseph R. Phillips

IPC分类号： D21C5/02 ,  D21C9/10 ,  D02G3/00

CPC分类号： D21C9/1057 ,  D21C5/02 ,  D21C9/1026 ,  Y02W30/648 ,  Y10T428/2913 ,  Y10T428/2964 ,  Y10T428/2965 ,  Y10T428/2967 ,  Y10T428/2975 ,  Y10T428/2978

摘要： Recycled paper pulp having at least two different types of paper which consume widely different amounts of bleaching chemical, or mixed hardwood and soft-wood pulps, are treated in a manner that enhances distribution and redistribution of bleaching chemical to enhance uniformity of the bleaching treatment. The pulp is intensely mixed to provide a homogenous mixture of fibrous material and bleaching chemical, and then is continuously or intermittently subjected to mechanical action (such as in low intensity mixers, or by agitating pulp in a retention tank) of sufficient intensity and duration so as to enhance distribution and redistribution of a bleaching chemical. Also, recycled pulp will have cleanliness which varies significantly over time, and this is accommodated by sensing at least one of the brightness, color, or lignin content (e.g. all three) of the pulp prior to treatment in a first bleaching stage, controlling the quantity of first bleaching chemical added to the first stage in response to at least one of the brightness, color, or lignin content sensing to achieve a target brightness increase for the first stage, and then repeating the sensing and quantity control steps for a second and subsequent stages. Alternatively all sensing can be done initially. Within a stage, a valve may be controlled to subject the pulp to a second treatment in that stage, or to pass it out of the stage to the next stage, depending upon cleanliness.

摘要翻译： 使用具有消耗大量不同量的漂白化学品或混合的硬木和软木纸浆的至少两种不同类型的纸的回收纸浆以增强漂白化学品的分配和再分配以增强漂白处理的均匀性的方式进行处理。 将纸浆强烈混合以提供纤维材料和漂白化学品的均匀混合物，然后以足够的强度和持续时间连续或间歇地进行机械作用（例如在低强度混合器中或通过在保留罐中搅拌纸浆），以便 以增强漂白化学品的分配和再分配。 回收纸浆的清洁度也随着时间而显着变化，这通过在第一漂白阶段中检测处理之前的纸浆的亮度，颜色或木质素含量（例如全部三种）中的至少一种来控制数量 响应于亮度，颜色或木质素含量感测中的至少一种，第一漂白化学品添加到第一阶段，以实现第一阶段的目标亮度增加，然后再次对第二阶段和随后的感测和数量控制步骤进行再次测试 阶段 所有感觉都可以在初期完成。 在一个阶段内，根据清洁度，可以控制阀门使纸浆在该阶段进行第二次处理，或将其从阶段转移到下一阶段。

公开(公告)号：US4951888A

公开(公告)日：1990-08-28

申请号：US397930

申请日：1989-08-24

申请人： Patrick E. Sharpe ,  Ole A. Sandven

发明人： Patrick E. Sharpe ,  Ole A. Sandven

IPC分类号： D21D1/30

CPC分类号： D21D1/306

摘要： A refiner element (10) for the refining of fibrous material is provided with a comminuting surface of which at least a portion comprises an abrasive surface. The method of forming the refiner element (10) comprises casting a metal substrate (20) having a frontal surface (22), melting a relatively thin layer of the metal substrate on the frontal surface thereof to form a molten pool in the comminuting surface over the region thereof on which an abrasive surface is desired, depositing an abrasive material (38) into the molten pool formed in the metal comminuting surface (22) of the refiner element (10), and allowing the molten metal pool into which the abrasive material (38) has been deposited to solidify whereby the particles of abrasive material (38) are strongly bonded into the metal surface of the refining element to form the abrasive comminuting surface thereon. Most advantageously, the melting of a thin layer of the frontal surface (22) on the metal substrate (20) of the refiner element (10) is accomplished by directing unto the comminuting surface a laser beam (88) of sufficient intensity to melt the surface to a pre-determined depth.

摘要翻译： 用于精制纤维材料的精磨机元件（10）设置有粉碎表面，其至少一部分包括研磨表面。 形成精磨机元件（10）的方法包括浇铸具有前表面（22）的金属基材（20），在其表面上熔化相对薄的金属基材层，以在粉碎表面上形成熔池 在其上需要研磨表面的区域上，将研磨材料（38）沉积到形成在精磨机元件（10）的金属粉碎表面（22）中的熔池中，并且允许熔融金属池 （38）沉积固化，由此研磨材料（38）的颗粒牢固地结合到精炼元件的金属表面中以在其上形成磨料粉碎表面。 最有利的是，通过将足够强度的激光束（88）引导至粉碎表面来完成精磨元件（10）的金属基底（20）上的前表面（22）的薄层的熔化，从而熔化 表面到预定深度。