Apparatus for uniformly debossing and aperturing a resilient plastic web, methods of making such apparatus, methods of using such apparatus to uniformly deboss and aperture a resilient plastic web and a web made using such apparatus
    1.
    发明公开
    Apparatus for uniformly debossing and aperturing a resilient plastic web, methods of making such apparatus, methods of using such apparatus to uniformly deboss and aperture a resilient plastic web and a web made using such apparatus 失效
    用于均匀消除和破坏灵活的塑料网络的装置,制造这种装置的方法,使用这种装置来均匀分布的方法以及使用这种装置的网页的弹性塑料网

    公开(公告)号:EP0057484A3

    公开(公告)日:1982-08-25

    申请号:EP82200085

    申请日:1982-01-26

    IPC分类号: A41B13/02 B29C17/03

    摘要: Method and apparatus for constructing a three-dimensional film forming structure for imparting a uniformly apertured three-dimensional pattern to a heated plastic material subjected to a fluid pressure differential while in contact with said forming structure. In a preferred embodiment, said forming structure is created by forming a substantially continuous pattern of apertures in a multiplicity of planar sheets, at least a portion of said sheets having aperture patterns which are concentrically aligned but dissimilar in size to one another. The sheets having said concentrically aligned aperture patterns are thereafter superposed upon one another so as to form a stack exhibiting a three-dimensional continuum of capillary networks. A sufficient number of laminae are employed to ensure that said networks are of greater overall length than the maximum depth to which the plastic film being processed thereon is drawn when subjected to said fluid pressure differential. Said capillary networks exhibit a cross sectional area which reaches a minimum intermediate the uppermost and lowermost surfaces of the stack and thereafter increases in the direction of the lowermost surface of the stack to increase fluid permeability. The superposed sheets are bonded to one another at contact points while in the stacked configuration to form an integral laminate structure. The laminate forming structure is preferably caused to assume a tubular shape and its opposing free edges are secured to one another without disrupting the three-dimensional continuum of capillary networks along its periphery, thereby facilitating continuous plastic web processing against its outermost surface. The tubular laminate forming structure is preferably supported on a cylindrical drum by a multiplicity of radially oriented support members having lands which contact the innermost surface of the tubular member, but which are of ' insufficient cross-section to obstruct fluid flow through the capillary networks. Plastic material to be debossed and uniformly apertured may be extruded directly onto the surface of the forming structure while in a molten state or continuously fed in the form of film from a roll into contacting relation with the tubular laminate structure. The plastic material is subjected to a fluid pressure differential on said forming structure while at a temperature above its softening point. The overall thickness and configuration of the permeable laminate structure permits uniform application of fluid pressure, usually vacuum, to the lowermost surface of the plastic film, while preventing contact between the film and the support members. As a result, the heated film is uniformly debossed and apertured in conformance with the surface of the forming structure. The uniformly debossed and apertured film is cooled below its softening temperature and thereafter removed from the forming structure.

    Substantially fluid-impervious microbubbled polymeric web and method and apparatus for making it
    3.
    发明公开
    Substantially fluid-impervious microbubbled polymeric web and method and apparatus for making it 失效
    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。

    公开(公告)号:EP0305123A1

    公开(公告)日:1989-03-01

    申请号:EP88307706.7

    申请日:1988-08-19

    IPC分类号: B29C59/00 A61L15/00 A61F13/15

    摘要: 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.

    摘要翻译: 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。

    Method and apparatus for uniformly debossing and optionally aperturing a moving plastic web
    4.
    发明公开
    Method and apparatus for uniformly debossing and optionally aperturing a moving plastic web 失效
    一种移动塑料网的方法和装置

    公开(公告)号:EP0138601A3

    公开(公告)日:1986-06-04

    申请号:EP84307024

    申请日:1984-10-15

    摘要: Method and apparatus for uniformly macroscopically expanding and, if desired, aperturing a plastic web. This is preferably accomplished by supporting the plastic web on a moving three-dimensional forming structure which is supported in a fluid pressure differential zone by a stationary support member. By providing a relationship between the size and pattern of the apertures in the stationary support member and the size and pattern of the apertures in the three-dimensional forming structure, substantially all of the apertures present in the forming structure are unobstructed by the stationary support member at some point during the forming structure's traverse of the fluid pressure differential zone. Thus the resultant plastic web is uniformly debossed and, if desired, apertured in the pattern of the three-dimensional forming structure.

    Apparatus for uniformly debossing and aperturing a resilient plastic web
    7.
    发明公开
    Apparatus for uniformly debossing and aperturing a resilient plastic web 失效
    Vorrichtung zumgleichmässigenTiefprägenund Perforieren einer elastischen Kunststoffbahn。

    公开(公告)号:EP0057484A2

    公开(公告)日:1982-08-11

    申请号:EP82200085.7

    申请日:1982-01-26

    IPC分类号: B29C33/42

    摘要: Method and apparatus for constructing a three-dimensional film forming structure for imparting a uniformly apertured three-dimensional pattern to a heated plastic material subjected to a fluid pressure differential while in contact with said forming structure. In a preferred embodiment, said forming structure is created by forming a substantially continuous pattern of apertures in a multiplicity of planar sheets, at least a portion of said sheets having aperture patterns which are concentrically aligned but dissimilar in size to one another. The sheets having said concentrically aligned aperture patterns are thereafter superposed upon one another so as to form a stack exhibiting a three-dimensional continuum of capillary networks. A sufficient number of laminae are employed to ensure that said networks are of greater overall length than the maximum depth to which the plastic film being processed thereon is drawn when subjected to said fluid pressure differential. Said capillary networks exhibit a cross sectional area which reaches a minimum intermediate the uppermost and lowermost surfaces of the stack and thereafter increases in the direction of the lowermost surface of the stack to increase fluid permeability. The superposed sheets are bonded to one another at contact points while in the stacked configuration to form an integral laminate structure. The laminate forming structure is preferably caused to assume a tubular shape and its opposing free edges are secured to one another without disrupting the three-dimensional continuum of capillary networks along its periphery, thereby facilitating continuous plastic web processing against its outermost surface. The tubular laminate forming structure is preferably supported on a cylindrical drum by a multiplicity of radially oriented support members having lands which contact the innermost surface of the tubular member, but which are of ' insufficient cross-section to obstruct fluid flow through the capillary networks. Plastic material to be debossed and uniformly apertured may be extruded directly onto the surface of the forming structure while in a molten state or continuously fed in the form of film from a roll into contacting relation with the tubular laminate structure. The plastic material is subjected to a fluid pressure differential on said forming structure while at a temperature above its softening point. The overall thickness and configuration of the permeable laminate structure permits uniform application of fluid pressure, usually vacuum, to the lowermost surface of the plastic film, while preventing contact between the film and the support members. As a result, the heated film is uniformly debossed and apertured in conformance with the surface of the forming structure. The uniformly debossed and apertured film is cooled below its softening temperature and thereafter removed from the forming structure.

    摘要翻译: 用于构造三维成膜结构的方法和装置,用于在与所述成形结构接触的同时承受流体压差的加热塑料材料赋予均匀的三维图案。 在优选实施例中,所述形成结构是通过在多个平面片中形成基本连续的孔的图案而形成的,所述片的至少一部分具有同心对准但尺寸彼此不同的孔图案。 然后将具有所述同心对准的孔径图案的片材叠置在一起,以便形成显示毛细管网络的三维连续体的层叠体。 使用足够数量的层,以确保所述网络的总长度大于当经受所述流体压差时被拉伸的塑料膜被拉伸的最大深度的总长度。 所述毛细管网表现出在堆叠的最上表面和最下表面之间达到最小值的横截面积,然后在堆叠的最下表面的方向上增加以增加流体渗透性。 叠置的片材在层叠构造中的接触点处彼此接合以形成整体的层叠结构。 优选地形成层压体形成结构

    Method and apparatus for uniformly debossing and optionally aperturing a moving plastic web
    10.
    发明公开
    Method and apparatus for uniformly debossing and optionally aperturing a moving plastic web 失效
    用于均匀地形成凹陷和穿孔可选移动塑料薄片的方法和装置。

    公开(公告)号:EP0138601A2

    公开(公告)日:1985-04-24

    申请号:EP84307024.4

    申请日:1984-10-15

    摘要: Method and apparatus for uniformly macroscopically expanding and, if desired, aperturing a plastic web. This is preferably accomplished by supporting the plastic web on a moving three-dimensional forming structure which is supported in a fluid pressure differential zone by a stationary support member. By providing a relationship between the size and pattern of the apertures in the stationary support member and the size and pattern of the apertures in the three-dimensional forming structure, substantially all of the apertures present in the forming structure are unobstructed by the stationary support member at some point during the forming structure's traverse of the fluid pressure differential zone. Thus the resultant plastic web is uniformly debossed and, if desired, apertured in the pattern of the three-dimensional forming structure.