Method and apparatus for providing powder into fibrous web structures
    43.
    发明授权
    Method and apparatus for providing powder into fibrous web structures 失效
    将粉末提供到纤维网结构中的方法和设备

    公开(公告)号:US4699808A

    公开(公告)日:1987-10-13

    申请号:US897171

    申请日:1986-08-15

    摘要: A method and apparatus for incorporating a powder into a continuous fibrous web containing multiple corrugations. In the method, a fibrous web provided with multiple parallel corrugations is continuously passed over a curved surface having an arc with a radius to web thickness ratio of 0.5-3 and the corrugations are opened at their upper side. While any bonded fibers connecting adjacent corrugations together are broken apart. A powder having 50-1000 micron particle size is deposited by gravity into the opened spaces between adjacent corrugations of the web. The deposited powder is then compacted into the fibrous corrugated web by rubbing with a pad moved in an oscillating motion generally perpendicular to the corrugations. The powder filled web is bent in the opposite direction around a roller to break the fibers between the corrugations on the opposite side of the web. The second roller can be made vertically movable so as to convert the web continuous forward motion to an intermittent forward motion.

    摘要翻译: 一种用于将粉末掺入含有多个波纹的连续纤维网中的方法和装置。 在该方法中,具有多个平行波纹的纤维网连续地通过具有半径至网板厚度比为0.5-3的弧形的弧形表面,并且波纹在其上侧开口。 虽然将相邻波纹连接在一起的任何粘合纤维分开。 通过重力将具有50-1000微米粒度的粉末沉积在幅材的相邻波纹之间的开放空间中。 然后将沉积的粉末通过与以大致垂直于波纹的振荡运动移动的垫摩擦而压实成纤维状波纹状网状物。 粉末填充的网沿着辊子沿相反的方向弯曲,以破坏在幅材的相对侧上的波纹之间的纤维。 可以使第二辊可垂直移动,以将幅材连续向前运动转换成间歇向前运动。

    Method of producing a mineral fiber product
    47.
    发明授权
    Method of producing a mineral fiber product 失效
    矿物纤维制品的制造方法

    公开(公告)号:US4251320A

    公开(公告)日:1981-02-17

    申请号:US746130

    申请日:1976-11-30

    摘要: The disclosure relates to the production of a mineral fiber product for example to replace asbestos fibers in different products. In the method of production, at most 7% by weight of mineral fibers is dispersed in water which contains a wetting agent, undispersible material being then separated and the dispersion being then mechanically dewatered to a dry content of from 30 to 70% by weight and a fiber density of from 200 to 400 kg/m.sup.3. In a subsequent, separate stage, the fibers are redispersed in water substantially without the addition of wetting agent, are provided with possible additives such as cellulose fibers, are shaped, dewatered and dried.

    摘要翻译: 本公开涉及例如用于替代不同产品中的石棉纤维的矿物纤维产品的生产。 在生产方法中,将至多7重量%的矿物纤维分散在含有润湿剂的水中,然后分离出不分散的材料,然后将分散体机械脱水至30-70重量%的干含量, 纤维密度为200〜400kg / m 3。 在随后的分离阶段,基本上不加入润湿剂将纤维再分散在水中,提供可能的添加剂如纤维素纤维,成型,脱水和干燥。

    Process of making a sheet paper
    48.
    发明授权
    Process of making a sheet paper 失效
    制作纸张的过程

    公开(公告)号:US3674621A

    公开(公告)日:1972-07-04

    申请号:US3674621D

    申请日:1970-02-17

    CPC分类号: D21H5/20

    摘要: A PROCESS OF MAKING A SHEET PAPER IN WHICH AN AQUEOUS DISPERSION CONTAINING SYNTHETIC FIBER, A HOT WATER SOLUBLE FIBER BINDER AND CARBOXYMETHYL CELLULOSE IS PREPARED AND SUBSEQUENTLY, A SHEET PAPER IS FORMED FROM THE AQUEOUS DISPERSION. THE AQUEOUS DISPERSION MAY CONTAIN A FIBROUS MATERIAL HAVING A LOWER MELTING POINT THAN THAT OF THE SYNTHETIC FIBER IN ADDITION TO THE ABOVE INGREDIENTS. A SHEET PAPER FROM THE LATTER AQUEOUS DISPERSION IS SUBJECTED TO HEAT TREATMENT.