Process for producing a fiber aggregate
    1.
    发明授权
    Process for producing a fiber aggregate 失效
    纤维聚集体的制造方法

    公开(公告)号:US4826569A

    公开(公告)日:1989-05-02

    申请号:US99899

    申请日:1987-09-22

    摘要: The feature of the present invention is that a fiber mixture of silicon carbide or silicon nitride whiskers and alumina or alumina-silica short fibers with 1 to 45 volume percent of the short fibers in relation to the total volume of the whiskers and short fibers is used in the following steps for producing a fiber aggregate: a dispersion step of dispersing whiskers and short fibers into a dielectric fluid; an orientation step of placing the dielectric fluid containing the fibers dispersed therein in a space between a positive electrode and a negative electrode across which a high voltage is applied, whereby causing individual fibers in the dielectric fluid to electrostatically orient, with one end pointing to the positive electrode and the other end pointing to the negative electrode; and an aggregating step of aggregating the electrostatically oriented fibers while keeping the oriented step. The fiber mixture is used in order to grow the bridgings of whiskers around the short fibers as cores. Thus the fiber sedimentation is accelerated by densely bridged fibers while maintaining a satifactory orientation. Hence a whisker aggregate with a larger fiber volume ratio Vf can be formed in a shorter period of time.

    摘要翻译: 本发明的特征是使用碳化硅或氮化硅晶须的纤维混合物和相对于晶须和短纤维总体积的1至45体积%的短纤维的氧化铝或氧化铝 - 二氧化硅短纤维 在生产纤维聚集体的以下步骤中:将晶须和短纤维分散在介质流体中的分散步骤; 将包含分散在其中的纤维的介质流体放置在施加高电压的正极和负极之间的空间中的取向步骤,由此使电介质流体中的各个纤维静电取向,一端指向 正极,另一端指向负极; 以及在保持定向步骤的同时聚集静电取向纤维的聚集步骤。 使用纤维混合物以便在短纤维周围生长作为核心的晶须的桥接。 因此,纤维沉降通过密集桥接纤维加速,同时保持饱和取向。 因此,可以在更短的时间内形成具有较大纤维体积比Vf的晶须聚集体。

    Procedure and apparatus for controlling the surface mass distribution of
paper web
    3.
    发明授权
    Procedure and apparatus for controlling the surface mass distribution of paper web 失效
    用于控制纸幅表面质量分布的步骤和装置

    公开(公告)号:US4761858A

    公开(公告)日:1988-08-09

    申请号:US886267

    申请日:1986-07-16

    申请人: Ari Maijala

    发明人: Ari Maijala

    CPC分类号: D21H27/00

    摘要: A procedure for controlling the surface mass distribution of a paper web being formed on a dry paper machine, wherein the suction air recirculated to the former is utilized. In procedures of prior art, the surface mass distribution has not been uniform enough. With the aid of the present invention the problem has been solved in that the quantity of air blown to the former is adjusted in the cross-machine direction in order to obtain the desired surface mass distribution.

    摘要翻译: 用于控制在干纸机上形成的纸幅的表面质量分布的方法,其中利用再循环到前者的吸入空气。 在现有技术的程序中,表面质量分布还不够均匀。 借助于本发明,已经解决的问题在于,为了获得所需的表面质量分布,在横向方向上调节吹送到前者的空气量。

    Process for manufacturing boron nitride fiber mats
    4.
    发明授权
    Process for manufacturing boron nitride fiber mats 失效
    氮化硼纤维毡的制造方法

    公开(公告)号:US4309244A

    公开(公告)日:1982-01-05

    申请号:US134765

    申请日:1980-03-28

    摘要: A process is disclosed for producing a non-woven, boron nitride-bonded boron nitride fiber mat, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide is centrifugally spun into strands and attenuated by an annular gas stream into fibers which are compacted at a controlled relative humidity into a bundle and heated in an anhydrous ammonia atmosphere to convert boron oxide in the fibers to boron nitride (BN). The BN fibers are blended with a lesser amount of boron oxide fibers and a nonaqueous liquid medium to form a slurry. The slurry is processed through a Fourdrinier machine to form a felt; and, the felt is calendered by passing it through the nip of a pair of calender rolls at an appropriate temperature and pressure to soften the boron oxide binder to fuse the BN fibers together. The interstitial boron oxide then is converted to boron nitride.

    摘要翻译: 公开了用于生产适合用作硫化锂电池中的电池隔板的无纺布氮化硼结合氮化硼纤维垫的方法。 将熔融的氧化硼离心旋转成股线,并通过环形气流减压成纤维,将纤维在受控的相对湿度下压成束,并在无水氨气氛中加热,将纤维中的氧化硼转化为氮化硼(BN)。 将BN纤维与较少量的氧化硼纤维和非水液体介质共混以形成浆料。 通过长网机加工浆料以形成毡; 并且通过在适当的温度和压力下将其通过一对压延辊的辊隙来使毡被压延,以软化氧化硼粘合剂以将BN纤维熔合在一起。 然后将间隙氧化硼转化为氮化硼。

    Process of forming wet laid tufted nonwoven fibrous web and tufted
product
    7.
    发明授权
    Process of forming wet laid tufted nonwoven fibrous web and tufted product 失效
    形成湿敷簇绒非织造纤维网和簇绒制品的方法

    公开(公告)号:US3960652A

    公开(公告)日:1976-06-01

    申请号:US489411

    申请日:1974-07-17

    摘要: A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber-collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to removal from the element. The apertured element is adapted not only to form the tufted nonwoven fibrous web but also to permit consolidation of individual tufts and facilitate the formation of tufted webs from 100 percent wood pulp. Additionally, webs having tufts on both planar surfaces also can be formed by this technique.

    摘要翻译: 通过造纸技术通过造纸技术制造出具有高蓬松,松散和吸收性的簇状非织造纤维网材料,该造纸技术使用具有适于防止相邻簇之间的缠结的结构的多孔的板状纤维收集元件,其在从元件移除之前。 有孔元件不仅适于形成簇状非织造纤维网,而且还允许固定单个簇,并且促进从100%木浆形成簇绒网。 此外,也可以通过这种技术形成在两个平面上具有簇的网。

    Process for manufacturing paper-like synthetic sheet
    8.
    发明授权
    Process for manufacturing paper-like synthetic sheet 失效
    纸样合成纸的制造工艺

    公开(公告)号:US3953282A

    公开(公告)日:1976-04-27

    申请号:US467591

    申请日:1974-05-06

    摘要: A polyolefin micro-flake aggregation which is easily micro-flakable from the aggregation into a plurality of irregularly shaped micro-flakes suitable for producing synthetic paper, is manufactured from a solution of 5 - 40% by weight of polyolefin such as polyethylene and polypropylene in a solvent such as hydrocarbons and chlorinated hydrocarbons in the presence of a surface active compound of at least 0.01% based on the weight of the polyolefin by spraying the solution which is at a temperature of at least 100.degree.C from a closed container into atmosphere through an orifice.A polyolefin synthetic paper is formed from a suspension of the micro-flakes in an organic liquid such as hydrocarbons and chlorinated hydrocarbons which can swell or partially dissolve the polyolefin.

    摘要翻译: 聚烯烃微片聚集体可以从聚集容易地微薄化成适合生产合成纸的多个不规则形状的微片,由5-40重量%的聚烯烃如聚乙烯和聚丙烯的溶液制成 在表面活性化合物存在下,通过将密封容器中至少100℃的溶液喷雾到大气中,通过将聚烯烃的重量计至少为0.01%的溶剂,例如烃和氯代烃,通过 孔。

    Nonwoven fabric
    10.
    发明授权
    Nonwoven fabric 失效
    无纺布

    公开(公告)号:US4018646A

    公开(公告)日:1977-04-19

    申请号:US626883

    申请日:1975-10-29

    IPC分类号: F16L59/02 D21H5/26

    摘要: A novel web that can be produced by the process of the present invention is comprised of two different types of fibers, with the web characterized by having a predominance of one fiber type at one of its major faces, and a predominance of the other fiber type at the other of its major faces. The web includes a transition between the faces in which the predominance of the fibers decreases uniformly away from the face at which they predominate.

    摘要翻译: 可以通过本发明的方法生产的新型纤维网由两种不同类型的纤维组成,其中纤维网特征在于其主要面之一具有一种纤维类型的优势,而另一种纤维类型 在另一个主要的面孔。 纤维网包括在其中主要的纤维从它们占主导地位的面平均偏离的面之间的过渡。