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    • 6. 发明申请
    • Container Made From Expanded Plastic Film
    • 膨胀塑料薄膜制成的容器
    • US20100072679A1
    • 2010-03-25
    • US12237214
    • 2008-09-24
    • Kenneth R. Wilkes
    • Kenneth R. Wilkes
    • B29C49/18B29C49/56B29C49/64
    • B29C49/0073B29C49/02B29C65/02B29C65/08B29C65/48B29C66/1122B29C66/43B29C66/4312B29C66/43129B29C66/432B29C66/53262B29C2049/0052B29C2049/4638B29C65/00
    • A plastic film preform is expanded to form a container. The preform has a longitudinal axis that extends from an open top to a closed bottom. The preform is pressurized with a first pressure sufficient to cause side walls of the preform to expand outwardly and the bottom of the preform to be drawn inwardly thereby reducing a length of the preform along the longitudinal axis. Side molds are closed around the side walls of the preform, the closed side molds being larger than the expanded side walls. A bottom mold is closed to be adjacent to the bottom of the preform after pressurizing the preform with the first pressure. The preform is pressurized with a second pressure sufficient to expand the preform to fill the closed molds. The preform is thereby significantly stretched in a direction perpendicular to the longitudinal axis and minimally stretched along the longitudinal axis.
    • 塑料薄膜预制件被膨胀以形成容器。 预成型件具有从开口顶部延伸到封闭底部的纵向轴线。 预成型件被加压,第一压力足以使预成型件的侧壁向外膨胀,并且预成型件的底部被向内拉,从而沿着纵向轴线减小预成型件的长度。 侧模围绕预成型件的侧壁封闭,封闭的侧模大于膨胀的侧壁。 在第一压力对预成型件加压之后,底模被封闭以邻近预制件的底部。 预成型件用足以膨胀预成型件以填充封闭模具的第二压力加压。 因此,预成型件在垂直于纵向轴线的方向上显着地拉伸并且沿着纵向轴线最小程度地拉伸。