Pressure-sensitive adhesive closure for disposable diaper
    1.
    发明授权
    Pressure-sensitive adhesive closure for disposable diaper 失效
    一次性尿布压敏胶封

    公开(公告)号:US5342339A

    公开(公告)日:1994-08-30

    申请号:US702447

    申请日:1991-05-16

    摘要: A pressure-sensitive adhesive closure for a disposable diaper can exhibit high peel resistance both at low and high speeds while its peelability at high speeds is not excessively shocky when it employs a pressure-sensitive adhesive of a certain rheology and it has, covering the fastening area, a polyolefin layer having microtopographical features as in FIGS. 1-6 of the drawing. As seen in FIGS. 1-6, suitable microtopographical features are provided by a large number of closely spaced asperities at least two micrometers in height that have a jagged appearance at 500.times.. A pressure-sensitive adhesive of suitable rheology can be provided by a blend of an AB block copolymer, such as a copolymer of styrene and either isoprene or butadiene, and tackifying resin, preferably a mixture of liquid and solid tackifying resins.

    摘要翻译: 用于一次性尿布的压敏粘合剂封闭体可以在低速和高速下表现出高抗剥离性,而当采用一定流变学的压敏粘合剂时,其在高速下的剥离性不会过度剧烈,并且覆盖紧固 面积,具有如图1和2所示的微图形特征的聚烯烃层。 图1-6。 如图 如图1-6所示,合适的微图形特征由大量紧密间隔的至少两微米的高度提供,具有500倍锯齿状的外观。 可以通过AB嵌段共聚物,例如苯乙烯和异戊二烯或丁二烯的共聚物和增粘树脂,优选液体和固体增粘树脂的混合物的混合物来提供具有合适流变性的压敏粘合剂。

    Extrusion die and process
    8.
    发明授权
    Extrusion die and process 失效
    挤出模具和工艺

    公开(公告)号:US06767492B2

    公开(公告)日:2004-07-27

    申请号:US10185218

    申请日:2002-06-27

    IPC分类号: B29C4706

    摘要: A die apparatus, a method of using the die apparatus to produce co-extruded polymeric articles, and co-extruded polymeric articles produced using the die apparatus and method are disclosed. The die apparatus includes a hollow vane configured to extrude a material into a chamber within the die, thereby producing a co-extruded web. The co-extruded web has a plurality of distinct, discontinuous phases in the cross-web direction, the phases having a uniform width as shown by a coefficient of variation of less than 8 percent for any three consecutive phases. The phases are substantially continuous down-web and are surrounded by a matrix having two or more layers.

    摘要翻译: 公开了一种模具设备,使用模具设备来生产共挤出的聚合物制品的方法,以及使用模具设备和方法制造的共挤出的聚合物制品。 模具设备包括中空叶片,其构造成将材料挤出到模具内的腔室中,从而产生共挤压纤维网。 共挤出纤维网在横向方向上具有多个不同的不连续相,这些相具有均匀的宽度,如任何三个连续相的变化系数小于8%所示。 这些相是基本上连续的下卷材并且被具有两层或更多层的基体包围。