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    • 2. 发明申请
    • PROCESSES AND APPARATUS FOR MAKING TRANSVERSELY DRAWN FILMS WITH SUBSTANTIALLY UNIAXIAL CHARACTER
    • 用于制造具有主要单一字符的横向拉伸膜的方法和装置
    • US20070116793A1
    • 2007-05-24
    • US11566247
    • 2006-12-04
    • Jeffery JacksonWilliam MerrillAndrew RuffDesiree ThompsonDennis Krueger
    • Jeffery JacksonWilliam MerrillAndrew RuffDesiree ThompsonDennis Krueger
    • B29C55/08
    • B29C55/08Y10S425/041
    • An apparatus for processing a film includes a conveyor and an isolated takeaway device. The conveyor includes gripping members that hold opposing edge portions of the film and convey, under influence of a drive member, the film along a machine direction within a stretching region of the apparatus. The conveyor, over substantially the entire stretching region, is configured and arranged to provide diverging, substantially parabolic paths along which the gripping members move to stretch the film. The isolated takeaway device receives the film from the conveyor and includes gripping members to grasp opposing takeaway regions of the film directly from the stretching region and convey the film in the machine direction. In another embodiment, the conveyor provides diverging curvilinear paths along which the gripping members move to stretch the film. An isolated takeaway device includes opposing flexible, continuous gripping mechanisms for grasping opposing takeaway regions of the film.
    • 一种用于处理薄膜的设备包括输送机和隔离的外卖设备。 输送机包括保持膜的相对边缘部分的夹持构件,并且在驱动构件的影响下沿着机器方向在该装置的拉伸区域内输送膜。 输送机在基本上整个拉伸区域上被构造和布置成提供发散的基本抛物线的路径,夹持构件沿着该路径移动以拉伸薄膜。 隔离的外包装置从输送机接收薄膜,并且包括夹持构件,以直接从拉伸区域抓住薄膜的相对的外取区域并沿纵向方向输送薄膜。 在另一个实施例中,输送机提供发散的曲线路径,夹持构件沿着该曲线路径移动以拉伸薄膜。 隔离的外包装置包括用于抓住膜的相对外取区域的相对的柔性连续夹持机构。