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Synthetic closure with multiple internal layers, each layer having a variable cross section (VCS) along the closure length

Image Number 13 for United States Patent #8011522.

A container closure includes an inner core having a non-cylindrical profile created by a variable longitudinal cross-sectional area. One or more outer layers concentrically surround the core and have a cross-sectional area inversely correlated to the inner core so that the overall container closure has an essentially cylindrical profile.

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