发明授权
- 专利标题: Wet-laid, non-woven fabrics
- 专利标题(中): 湿布,无纺布
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申请号: US618325申请日: 1984-06-08
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公开(公告)号: US4512849A公开(公告)日: 1985-04-23
- 发明人: Ralph E. Brandon , Charles J. Davis , Michael Ring , Roy S. Swenson
- 申请人: Ralph E. Brandon , Charles J. Davis , Michael Ring , Roy S. Swenson
- 申请人地址: NY New York
- 专利权人: International Paper Company
- 当前专利权人: International Paper Company
- 当前专利权人地址: NY New York
- 主分类号: D21F11/00
- IPC分类号: D21F11/00 ; D21H5/12
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..sup.-1, and in which the individual fibers are restrained from becoming entangled and from forming knits, bundles, and strings.
公开/授权文献
- USD335536S Reducer cap for a safety trocar 公开/授权日:1993-05-11
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