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    • 7. 发明公开
    • Substantially fluid-impervious microbubbled polymeric web and method and apparatus for making it
    • 基本上不透液的聚合物纤维网具有的微泡和的方法和装置及其生产。
    • EP0305123A1
    • 1989-03-01
    • EP88307706.7
    • 1988-08-19
    • THE PROCTER & GAMBLE COMPANY
    • Lyons, Julie WalstonBattrell, Charles FrederickCurro, John JosephGerth, Donald LeroyMullane, William Irvin, Jr.Chappell, Charles WilburCree, James WilliamOuellette, William Robert
    • B29C59/00A61L15/00A61F13/15
    • A61F13/51476A61F13/5146A61F2013/51411A61F2013/51472A61F2013/51492B26F1/26B29C51/10B29C51/22B29C51/225B29C59/022B29C2059/023
    • A microbubbled, substantially fluid-impervious polymeric web exhibiting substantially the same consumer preferred soft and cloth-like tactile impression and low noise generation levels heretofore only achievable in microapertured, and hence substantially fluid pervious, polymeric webs. In a particularly preferred embodiment, the present invention pertains to a microbubbled polymeric web exhibiting a fine-scale pattern of discrete mushroom-shaped surface aberrations, each of said surface aberrations having its amplitude oriented substantially perpendicular to the surface in which the surface aberration originates. However, unlike microapertured webs which are fluid pervious, at least one tiny, continuous membrane bubble, i.e., a microbubble, is provided substantially coincidental with the maximum amplitude of each surface aberration. Thus, the microbubbled web is substantially fluid-impervious. In addition, such a web employing the fine-scale pattern of microbubbled surface aberrations does not exhibit the "rattling" or "rustling" noises typically exhibited by prior art fluid-impervious polymeric webs when subjected to movement. As a result, webs of the present invention have particular utility in environments such as substantially fluid-impervious backsheets for disposable infant diapers and adult incontinent diapers. The microbubbled webs are preferably formed by supporting a web of polymeric film on a moving forming structure and applying a liquid to the exposed surface of the web to permanently deform the web in the image of the forming structure. This is preferably accomplished by subjecting the exposed surface of the web to either a high pressure liquid stream or to hydraulic pressure imposed by a liquid laden deformable roll. The microbubbled webs can be produced either in "planar" or "macroscopically expanded" form.
    • 一种微鼓泡,基本上不透流体的聚合物纤维网表现出基本相同的消费者优选的柔软和象布一样的触感和低噪音的产生水平迄今仅在microapertured实现的,并且因此基本上可透液体聚合物幅片。 在一个特别优选的实施方案,本发明涉及一种微鼓泡聚合物纤维网参展离散蘑菇形表面像差的精细尺度的图案,每个所述表面像差具有其幅度在垂直于所述表面像差源自的表面大致取向。 然而,不同于microapertured腹板哪些是流体可透过的,至少一个微小的,连续的膜泡,即像差的微泡中,提供了与每个表面的最大振幅基本上巧合。 因此,微鼓泡腹板基本上不透流体的。 此外,寻求网络用人微精细尺度图案鼓泡表面像差不呈现“晃动”或“沙沙”通过现有技术的不透流体的纤维网的聚合物典型地展出噪声当经受运动。 其结果是,本发明的网具有在环境中特别有用:如用于一次性婴儿尿布和成人失禁尿布基本上不透流体的底片。 微鼓泡腹板优选地通过在一个移动的成形结构支撑聚合物薄膜的幅材和施加液体至幅材的暴露表面永久变形所述成形结构的所述图像中的网形成。 这优选通过幅材的暴露表面进行无论是高压液体流或通过液体负荷变形辊子所施加的液压压力来实现的。 微鼓泡纤维网可在“平面”或“宏观扩张”形式产生要么。