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    • 2. 发明授权
    • Packaging
    • 打包
    • US3922958A
    • 1975-12-02
    • US44726874
    • 1974-03-01
    • BATE F D C
    • BATE FREDERICK DOUGLAS CLAVELL
    • B65B9/02B65B43/06B31B1/66B31B1/16
    • B65B43/06B65B9/02Y10T156/1313
    • Method and apparatus for forming a package wherein two layers of wrapping film are continuously fed through a sealing station at a preselected velocity, the stroke length of a reciprocable sealing device at that station having a path parallel to that of the film feed so that it travels in a forward direction at the same linear speed as the film, the sealing device is brought into operative relationship with the layers of film during at least part of its forward travel in each cycle to produce a transverse sealing together of the two film layers, and the film layers are severed along a transverse line bounded on both sides by one of the transverse seals so as to form separate film tubes sealed along transverse edges but open at the longitudinal edges. The sealing mechanism comprises apparatus for traversing the film in a forward direction along a predetermined path and an articulated holding device for the film adapted to reciprocate along a path parallel to the path of the film and carrying the sealing device which is brought into operative relationship with the film layers during at least part of the forward motion of the articulated holding device.
    • 用于形成包装的方法和装置,其中两层包装膜以预选速度连续地供给通过密封站,该站的往复式密封装置的行程长度具有平行于胶片进给的路径,使得其行进 在与膜相同的线速度的向前方向上,密封装置在其每个循环的至少部分向前行进期间与膜层成为操作关系,以产生两个膜层的横向密封,并且 沿着横向密封件中的一个沿两边限定的横向线将薄膜层切断,以形成沿着横向边缘密封但在纵向边缘处开口的分离的薄膜管。 密封机构包括用于沿预定路径向前方向穿过薄膜的装置,以及用于薄膜的铰接保持装置,其适于沿着平行于薄膜路径的路径往复运动,并携带与该薄膜处于操作关系的密封装置 在关节保持装置的向前运动的至少一部分期间的膜层。