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    • 6. 发明授权
    • High gas barrier plastic closure
    • 高阻气塑料封闭
    • US4640428A
    • 1987-02-03
    • US772277
    • 1985-09-03
    • Long Fei Chang
    • Long Fei Chang
    • B65D41/04B65D53/04
    • B65D41/045
    • A plastic closure system for containers or bottles containing liquids under pressure, such as carbonated soft drinks. A liner incorporating a high gas barrier material such as "Eval" in a relatively thin layer is positioned over the end of the container neck. The liner is mechanically designed to have increased sealing forces applied thereto due to the internal pressure acting against the liner. In one embodiment, an overcap mechanically biases the liner over the edge of the container finish with internal gas pressure acting in the opposite direction, thus increasing the sealing force. The other embodiments incorporate a seal that has an annular, enlarged edge that is trapped between the finish and cap with pressure increasing the sealing force.
    • 用于在压力下容纳液体的容器或瓶子的塑料封闭系统,例如碳酸软饮料。 在相对薄的层中结合有诸如“Eval”的高阻气材料的衬垫位于容器颈部的端部之上。 衬套被机械地设计成由于内衬作用在内衬上而施加到其上的增加的密封力。 在一个实施例中,顶盖在相反方向上作用的内部气体压力将衬套机械地偏压在容器端部的边缘上,从而增加了密封力。 其他实施例包括具有增加密封力的压力的密封件,该密封件具有环形的扩大边缘,该边缘被压缩在精加工和盖子之间。