公开(公告)号：US4234379A

公开(公告)日：1980-11-18

申请号：US910881

申请日：1978-06-02

申请人： Bernard W. Conway ,  Nelson L. Fegley ,  James Moran

发明人： Bernard W. Conway ,  Nelson L. Fegley ,  James Moran

IPC分类号： D21B1/12 ,  D21F1/00 ,  D21H5/18 ,  D21F11/00

CPC分类号： D21F1/0018 ,  D21B1/12

摘要： A process of producing a uniform fiber dispersion involves the use of an in-line dispersing chamber to provide an average fiber dwell time of only about ten minutes and less. The chamber is provided with a plurality of weedless, nonthrusting impellers that generate regions of reduced pressure and flow disruptive turbulence of high intensity, the turbulence being of sufficient intensity to rapidly open fiber bundles and disperse the individual long fibers during said dwell time within said chamber. The process produces a machine-made light weight glass fiber web material of exceptionally uniform fiber distribution. The web is comprised of micron diameter glass fibers having a fiber length of about 1/4 inch or more and a basis weight of about 5-30 grams/square meter. The web material exhibits an isolated multi-fiber defect count of less than 10 per 100 square feet and a visually perceptible overall uniform fiber distribution essentially devoid of "cloud effect" fiber density variations.

摘要翻译： 制造均匀的纤维分散体的方法包括使用在线分散室，以提供仅约10分钟和更短的平均纤维停留时间。 该室设置有多个无杂草的非推力叶轮，其产生具有高强度的减压和流动破坏性湍流的区域，湍流具有足够的强度以快速打开纤维束并且在所述室内的所述停留时间内分散各个长纤维 。 该工艺生产出机械制造的轻质玻璃纤维网材料，其纤维分布特别均匀。 纤维网由具有约1/4英寸或更大的纤维长度和约5-30克/平方米的基重的微米直径的玻璃纤维组成。 纤维网材料表现出小于10每100平方英尺的孤立多纤维缺陷计数，并且基本上没有“云效应”纤维密度变化的视觉上可察觉的整体均匀纤维分布。