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    Process for high-speed production of webs of debossed and perforated thermoplastic film
    2.
    发明授权
    Process for high-speed production of webs of debossed and perforated thermoplastic film 失效
    用于高速生产凹陷和穿孔热塑性薄膜网的方法

    公开(公告)号：US4552709A

    公开(公告)日：1985-11-12

    申请号：US549525

    申请日：1983-11-04

    申请人： Thurman J. Koger, II ,  Theodore E. Farrington, Jr. ,  Eugene Weinshenker

    发明人： Thurman J. Koger, II ,  Theodore E. Farrington, Jr. ,  Eugene Weinshenker

    IPC分类号： B26F1/26 ,  B26F3/00 ,  B26F3/06 ,  B29C35/16 ,  B29C51/10 ,  B29C59/00 ,  B29C59/06

    CPC分类号： B26F1/26 ,  A61F13/15707 ,  A61F13/51104 ,  A61F13/512 ,  A61F13/513 ,  B29C35/16 ,  B29C59/06

    摘要： The present invention provides a process for debossing and perforating a substantially continuous web of substantially planar thermoplastic film, using a forming structure having a patterned forming surface with holes and an opposed surface. The forming structure is open from the holes in the forming surface to the opposed surface. The forming structure moves in a direction of the length of the web of film and carries the web of film in that direction. The web of film is substantially entirely molten. A fluid differential pressure is substantially continuously applied across the thickness of the web of film from a first position along the direction of movement of the forming structure to a second position. The first and second positions are fixed relative to the moving forming structure. The fluid differential pressure is sufficiently great to cause the first surface of the web of film to be urged against the forming surface and to cause perforations to be created in the web of film. Thus a web of debossed and perforated film is formed in the image of the forming surface from the web of film. Fluid differential pressure holds the web of debossed and perforated film against the forming surface without permitting substantial spring-back of the film. Cooling fluid is applied to the second surface of the web of debossed and perforated film after the film is debossed and perforated and before the web of debossed and perforated film passes the second position. Thus the web of debossed and perforated film is cooled without permitting substantial spring-back of the film and is set by the time the web of debossed and perforated film passes the second position.

    摘要翻译： 本发明提供了使用具有带有孔和相对表面的图案化成形表面的成形结构对基本上平坦的基本平坦的热塑性薄膜进行凹陷和穿孔的方法。 成形结构从成形表面的孔到相对的表面是敞开的。 成形结构沿薄膜幅材的长度方向移动，并在该方向上承载薄膜幅材。 膜片基本上完全熔化。 从成形结构的移动方向的第一位置到第二位置，液体压差基本上连续地施加在薄膜幅材的厚度上。 第一和第二位置相对于移动成形结构是固定的。 流体压差足够大，导致薄膜幅材的第一表面被压靠在成形表面上并且导致在薄膜幅材中产生穿孔。 因此，在成膜表面的图像中，从薄膜幅面形成凹陷和穿孔薄膜的网。 流体压差使得凹陷和穿孔膜的腹板抵抗成形表面，而不允许膜的大量回弹。 在薄膜被压下并穿孔之后，并且在凹陷和穿孔薄膜的网通过第二位置之前，将冷却流体施加到网状物的网状物的第二表面。 因此，压实和穿孔薄膜的网状物被冷却，而不允许薄膜的大量回弹，并且在压实和穿孔薄膜的网经过第二位置时被设定。

    Disposable absorbent mat structure for removal and retention of wet and dry soil
    6.
    发明授权
    Disposable absorbent mat structure for removal and retention of wet and dry soil 失效

    公开(公告)号：US4614679A

    公开(公告)日：1986-09-30

    申请号：US549066

    申请日：1983-11-07

    申请人： Theodore E. Farrington, Jr. ,  Milton D. Spahni ,  Thomas Rattray

    发明人： Theodore E. Farrington, Jr. ,  Milton D. Spahni ,  Thomas Rattray

    IPC分类号： A47L23/26 ,  A61F13/15 ,  B32B5/26 ,  B32B3/10

    CPC分类号： A61F13/512 ,  A47L23/266 ,  A61F13/51108 ,  A61F13/51121 ,  B32B5/26 ,  Y10S428/913 ,  Y10T428/24273 ,  Y10T428/24322 ,  Y10T428/24331 ,  Y10T428/24479 ,  Y10T428/24496 ,  Y10T428/24512 ,  Y10T428/24603 ,  Y10T428/24612 ,  Y10T428/28 ,  Y10T428/2848 ,  Y10T428/2891 ,  Y10T428/31551

    摘要： A disposable absorbent structure for the removal and retention of moisture and/or particulate from a soiled object coming in contact therewith. The structure preferably comprises a macroscopically patterned, three-dimensionally expanded, shear resistant uppermost layer having an object contacting surface and a non-object contacting surface, said uppermost layer exhibiting a pattern of protuberances extending upwardly from a first plane and terminating in a second plane substantially parallel to and remote from the first plane. The uppermost layer further exhibits a multiplicity of discrete apertures in its second plane and is pervious to moisture in its first plane. A moisture absorbent substrate having its uppermost surface coextensive with the uppermost object contacting layer is secured substantially continuously to substantially all of the non-object contacting surface of the uppermost layer. The discrete apertures located in the second plane of the uppermost layer expose the subjacent portions of the moisture absorbent substrate directly to the soiled object when the disposable absorbent structure contacts the object. Under normal use conditions, the portions of the uppermost layer initially located in the first plane and the portions of the uppermost layer initially located in the second plane undergo resilient deformation to move closer toward one another, but do not become coplanar with one another when subjected to compressive loads. When the compressive loads are removed, they move in the direction of their initial positions. Absorbent structures of the present invention function to transfer moisture and/or particulate from a soiled object into the moisture absorbent substrate via the discrete apertures in and/or the moisture-pervious portions of the uppermost layer of the structure. Once moisture and particulate enter the moisture absorbent substrate, they are effectively isolated from objects coming in contact with the structure by the uppermost object contacting layer.