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    • 5. 发明授权
    • Variable volume container
    • 可变容积容器
    • US09346610B2
    • 2016-05-24
    • US14169403
    • 2014-01-31
    • James Nelson
    • James Nelson
    • B65D88/46B65D88/44B65D41/32B65D85/72B65D81/20
    • B65D85/72B65D81/2015
    • A variable volume container comprises a sidewall, a base having a ribbed region, and a diaphragm. The ribbed region has a plurality of concentric ribs extending from the diaphragm, and flexure zones between each rib. The flexure zones allow for accordion-like movement of the diaphragm in response to the internal pressure of the container. The ribs are characterized has having a uniformly arced interior curved surface and a distorted arced exterior curved surface. The ribs are four to eight times the width of the flexure zones, and the flexure zones have an exterior surface shorter than its bottom surface. During vacuum sealing, these features allow the diaphragm to retract upward to reduce the volume of the container while maintaining shape and structural stability of the container. This is especially useful for food packaging operations where containers need to be able to withstand conditions such as high pressure, heat, and/or vacuums.
    • 可变体积容器包括侧壁,具有肋状区域的基部和隔膜。 肋状区域具有从隔膜延伸的多个同心肋,并且在每个肋之间弯曲区域。 挠曲区允许响应于容器的内部压力的隔膜的类似手风琴的运动。 肋的特征在于具有均匀弧形的内部弯曲表面和变形的弧形外部曲面。 肋条是弯曲区域宽度的四至八倍,弯曲区域的外表面比其底面短。 在真空密封期间,这些特征允许膜片向上缩回以减小容器的体积,同时保持容器的形状和结构稳定性。 这对于容器需要能够承受诸如高压,热和/或真空的条件的食品包装操作特别有用。