Flexible thermoplastic pouches having easy-open tear strip means and
apparatus for making same
    2.
    发明授权
    Flexible thermoplastic pouches having easy-open tear strip means and apparatus for making same 失效
    柔软的热塑性塑料袋具有易于打开的撕裂带装置和用于制造它的装置

    公开(公告)号:US4838429A

    公开(公告)日:1989-06-13

    申请号:US918166

    申请日:1986-10-10

    IPC分类号: B65D75/30 B65D75/58 B65D75/62

    CPC分类号: B65D75/5838 B65D75/30

    摘要: A flexible thermoplastic pouch having an easy-open tear strip means secured thereto is provided. According to one embodiment of the present invention, a tear strip is secured to an imperforate sidewall of a flexible pouch along two sawtooth securement lines arranged generally in the shape of an ellipse. The point where the two securement lines converge is give a W-shape, which provides two points of high stress concentration. When the user grasps and pulls the tear strip means, the securement lines rupture precisely at these two points of stress concentration and continue along the sawtooth securement lines, thereby providing the pouch with a dispensing opening of predetermined size, shape, and location. A sealing die apparatus for forming sawtooth, notched lines of securement between the tear strip means and the flexible pouch is alos disclosed.

    摘要翻译: 提供了一种具有固定在其上的容易打开的撕裂带装置的柔性热塑性袋。 根据本发明的一个实施例,撕裂带沿着大致为椭圆形状的两个锯齿固定线固定到柔性袋的无孔侧壁上。 两个固定线会聚的点是W形,它提供两个高应力集中点。 当使用者抓住并拉动撕裂带装置时,紧固线在这两个应力集中点处精确地破裂,并沿着锯齿固定线继续,从而为袋提供具有预定尺寸,形状和位置的分配开口。 用于形成锯齿形的密封模具装置,在撕开带装置和柔性袋之间形成有切口的固定线。

    Internal tear seal dual bag
    3.
    发明授权
    Internal tear seal dual bag 失效
    内部撕裂密封双袋

    公开(公告)号:US5209347A

    公开(公告)日:1993-05-11

    申请号:US624875

    申请日:1990-12-05

    IPC分类号: A61J1/00 A61J1/20

    摘要: A W-shaped frangible seal line separating at least two chambers in a container or securing together two sheets of material. Outer legs of the W-shape preferably describe an angle of 170.degree. or less. Inner legs of the W-shape preferably describe an upside down chevron or V-shape that describes an acute angle.

    摘要翻译: 一个W形易碎密封线,将容器中的至少两个室分开或将两片材料固定在一起。 W形的外腿优选为170度以下的角度。 W形的内腿优选地描述描述锐角的倒立的V形或V形。