Cover for a can-shaped container
    1.
    发明授权
    Cover for a can-shaped container 失效
    盖子为罐形容器

    公开(公告)号:US4828135A

    公开(公告)日:1989-05-09

    申请号:US83471

    申请日:1987-08-10

    IPC分类号: B65D17/34

    CPC分类号: B65D17/16

    摘要: A can comprising a barrel, an upper lid and a lower lid bonded to the barrel. Both the upper and lower lids comprise a gas liquid impermeable barrier layer, preferably aluminum foil, and resin layers heat fused to both sides thereof. Another resin layer is bonded to the exterior of the lids, with the upper lids having a tab and score to be perforated by the tab built into the resin layer. According to the invention, the yield strength of the top lid is made greater than that of the lower lid to prevent breaking of the score if the can is dropped. The differential strength may be accomplished by making the barrier layer of the top lid greater than that of the bottom lid.

    摘要翻译: 一种罐,其包括结合到筒的筒,上盖和下盖。 上盖和下盖均包括气液不可渗透的阻挡层,优选铝箔,以及热熔合到其两侧的树脂层。 另一树脂层结合到盖的外部,上盖具有凸片,刻痕被内置于树脂层中的凸片穿孔。 根据本发明,使得顶盖的屈服强度大于下盖的屈服强度,以防止如果罐掉落则打破分数。 差分强度可以通过使顶盖的阻挡层大于底盖的阻挡层来实现。