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    • 4. 发明授权
    • Elastic film laminate
    • 弹性薄膜层压板
    • US06821610B2
    • 2004-11-23
    • US10319848
    • 2002-12-13
    • Markus HamulskiMarcus Schönbeck
    • Markus HamulskiMarcus Schönbeck
    • B32B310
    • B32B27/08Y10T428/24273Y10T428/24322Y10T428/24479Y10T428/24562Y10T428/2457Y10T428/24628Y10T428/24661Y10T428/24686Y10T428/24826Y10T428/31587Y10T428/31797Y10T428/31859
    • An elastic film laminate includes a first film and at least one second film. The first film is elastomeric in at least one direction and can be reversibly stretched by a length &Dgr;lA during a deformation without demonstrating substantial residual deformation &Dgr;la. The second film is made of a deformable plastic connected with the first film in localized connection regions less than the entire length of the first film. The second film has received a permanent deformation &Dgr;lb significantly greater than the residual deformation &Dgr;la, by means of a common deformation by a length &Dgr;lA, so that the second film is permanently deformed between the localized connection regions. In a renewed deformation of the film laminate above a limit range of deformation, where &Dgr;l>&Dgr;lA applies, the second film exhibits a reaction force that causes the tensile force required for further stretching of the laminate to increase suddenly. The tear resistance of the second film is adjusted so that if the tensile force is increased further, stretching of the second film layer by at least 10% of its length is still possible beyond &Dgr;lA before tear.
    • 弹性膜层叠体包括第一膜和至少一个第二膜。 第一个膜在至少一个方向上是弹性的,并且可以在变形期间可逆地拉伸长度DeltalA,而不显示实质性的残余变形Deltala。 第二膜由与第一膜连接的可变形塑料制成,其局部连接区域小于第一膜的整个长度。 第二个胶片通过长度为DeltalA的共同变形,得到明显大于残余变形Deltala的永久变形Deltalb,使得第二个膜在局部连接区域之间永久变形。 在Deltal> DeltalA适用的极限变形范围之上,膜层压板的再次变形,第二膜表现出反作用力,导致层压板进一步拉伸所需的张力突然增加。 调节第二膜的抗撕裂性,使得如果拉伸力进一步增加,则在撕裂之前第二膜层的长度至少10%的拉伸仍然可能超过DeltalA。