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1. 发明授权

US5554287A Cellulose matrix filter material 失效
标题翻译：纤维素基质过滤材料
公开(公告)号：US5554287A
公开(公告)日：1996-09-10
申请号：US218323
申请日：1994-03-25
申请人： Dieter Beck , Peter P. Breitbach, deceased , Thomas Breitbach, heir , Rudiger Leibnitz , Gerd Ritter
发明人： Dieter Beck , Peter P. Breitbach, deceased , Thomas Breitbach, heir , Rudiger Leibnitz , Gerd Ritter
IPC分类号： B01D39/18 , D21H13/06 , D21H17/25 , D21H21/52 , D21H27/08 , B27N3/04
CPC分类号： D21H13/06 , B01D39/18 , D21H17/25 , D21H21/52 , D21H27/08 , Y10S264/48
摘要： A filter material forming a filter layer consisting substantially exclusively of celluloses and cellulose derivatives. In addition to cellulose acetate fibers, the filter layer contains, in the form of additives, microcrystalline cellulose and microfine cellulose, or else microcrystalline cellulose only. The amount of microcrystalline cellulose can be as high as 70% of the weight of the filter layer and that of microfine cellulose up to 50% of the weight of the filter layer. Cellulose acetate fibers can be excluded if in their place, microcrystalline cellulose having particle sizes less than 10 .mu.m. are used. The manufacturing method provides for cellulose acetate fibers to be first mixed in a wet state with microfine cellulose and microcrystalline cellulose, after which differently prepared celluloses are admixed. The mash formed by mixing is formed into a fleece by means of a known felting method, and the fleece is subsequently dried. With layers of the filter material, filtration efficiencies up to and including a sterilizing range are achieved, which renders them comparable to known kieselguhr layers.
摘要翻译：形成基本上仅由纤维素和纤维素衍生物组成的过滤层的过滤材料。除醋酸纤维素纤维外，过滤层以微晶纤维素和微细纤维素为添加剂的形式，也可以仅含微晶纤维素。微晶纤维素的量可以高达过滤层重量的70％，超细纤维素的量高达过滤层重量的50％。如果纤维素醋酸酯纤维在其位置，粒径小于10微米的微晶纤维素可以被排除。被使用。该制造方法提供先将纤维素乙酸纤维以湿态状态与微细纤维素和微晶纤维素混合，之后混合不同制备的纤维素。通过混合形成的糊状物通过已知的毡化方法形成羊毛，随后干燥羊毛。通过过滤材料层，达到直至并包括灭菌范围的过滤效率，这使得它们与已知的硅藻土层相当。

2. 发明授权

US5868973A Process and apparatus for producing fibrets from cellulose derivatives 失效
标题翻译：用于从纤维素衍生物生产纤维的方法和装置
公开(公告)号：US5868973A
公开(公告)日：1999-02-09
申请号：US831703
申请日：1997-04-10
申请人： Heinz-Joachim Muller , Rudiger Leibnitz , Udo Holzki
发明人： Heinz-Joachim Muller , Rudiger Leibnitz , Udo Holzki
IPC分类号： D01D5/40 , D01F2/24 , B29C9/10
CPC分类号： D01D5/40 , D01D5/18 , D01F2/24
摘要： The disclosure is a more economical process for producing fibrets of superior quality by directing a dope comprising a cellulose derivative and a suitable solvent therefor into a coagulant and exposing it there to a shearing field to coagulate of the dope and form the fibrets. The fibrets, the solvent and the coagulant are then separated off. The suspension formed from the dope and the coagulant is alternately accelerated and decelerated in the shearing field at least once, preferably at least twice. This makes it possible to maintain a high average degree of turbulence over a long distance, so that a dope of high viscosity can be processed. In the apparatus for producing fibrets, the at least one nozzle (46-49) is disposed within a dispersing facility (40) comprising rotor (44) and stator (43, 45) and further comprising at least two sprockets (50-53), of which at least one sprocket (50) is part of the rotor (44) of the dispersing facility (40).
摘要翻译：本公开是通过将包含纤维素衍生物和其合适的溶剂的涂料引导到凝结剂中并将其暴露于剪切场以凝结涂料并形成纤维，从而生产具有优异质量的纤维素的更经济的方法。然后将纤维，溶剂和凝结剂分离出来。由涂料和凝结剂形成的悬浮液在剪切场中交替加速和减速至少一次，优选至少两次。这使得可以在长距离上保持高的平均湍流程度，从而可以处理高粘度的涂料。在用于生产纤维束的设备中，至少一个喷嘴（46-49）设置在包括转子（44）和定子（43,45）的分散设备（40）内，并且还包括至少两个链轮（50-53），其中至少一个链轮（50）是分散设备（40）的转子（44）的一部分。

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