发明名称 Viscous dispersion for forming wet-laid, non-woven fabrics
摘要 An improved process for forming a non-woven fabric by wet-laying, on paper making equipment, staple length, synthetic fibers having a length to diameter ratio of about 400 to 3000, and an improved, non-woven fabric produced by the process. The process involves forming a stable, viscous, uniform, air-fiber-water dispersion by: adding the fibers to a high-shear agitated mixture of water and a dispersant to separate the fibers and to completely and uniformly distribute the individual fibers throughout the resulting, high-shear agitated, air, water and fiber mixture; and then, slowly adding a thixotropic thickener to the high-shear agitated mixture to form the viscous, air-fiber-water dispersion, having a nascent viscosity of about 10 to 125 cps., when measured at a shear rate of 30.5 sec.-1, and in which the individual fibers are restrained from becoming entangled and from forming knits, bundles, and strings.
申请公布号 US4049491(A) 申请公布日期 1977.09.20
申请号 US19750551399 申请日期 1975.02.20
申请人 INTERNATIONAL PAPER COMPANY 发明人 BRANDON, RALPH E.;DAVIS, CHARLES J.;RING, MICHAEL;SWENSON, ROY S.
分类号 D04H3/00;D21F11/00;D21H13/10;(IPC1-7):D21D3/00 主分类号 D04H3/00
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