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    • 20. 发明授权
    • Method for forming webs of transversely extensible fibrous material, in particular paper webs, and apparatus for implementing the method
    • 用于形成横向可延展的纤维材料的纤维网,特别是纸幅的方法以及用于实施该方法的装置
    • US08603299B2
    • 2013-12-10
    • US13638471
    • 2011-05-31
    • Giorgio TraniMarion Sterner
    • Giorgio TraniMarion Sterner
    • D21F11/14D21F1/48D21F3/10
    • B31F1/18
    • A method for forming a web of transversely extensible fibrous material includes the steps of subjecting a fluid-permeable endless conveyor belt of elastic material, of thickness increasing from its longitudinal axis to its edges, to a localized transverse stretching operation, achieved by temporarily withdrawing a longitudinal band thereof from the surface on which it naturally slides and maintaining it in contact, in this stretched condition, with at least a part of the surface of a support member; depositing a web of pliable fibrous material having a liquid content between 3% and 70% by weight against that portion of the conveyor belt of elastic material which has been transversely stretched; and with vacuum, maintaining the web of pliable fibrous material adhering to the conveyor belt of elastic material during its return to its original configuration, to cause the transverse contraction of the web and the simultaneous partial removal of liquid therefrom.
    • 用于形成横向可伸展纤维材料的网的方法包括以下步骤:将厚度从其纵向轴线到其边缘的厚度增加的弹性材料的流体可渗透的环形输送带经过局部横向拉伸操作,通过暂时取出 其纵向带从其自然滑动的表面并在其被拉伸的状态下与支撑构件的表面的至少一部分保持接触; 沉积相对于横向拉伸的弹性材料传送带部分的液体含量在3%至70%之间的柔韧纤维材料网; 并且在真空下保持柔性纤维材料的网状物在其返回到其初始构造期间粘附到弹性材料的输送带上,以引起幅材的横向收缩并同时从其中部分地除去液体。