Patent ID: 7799264
Filing Date: 2010-09-21
Classification: B29C,B29K,B29L,B65D

Abstract:
1. A method comprising: blow molding a container, a base of the container having a first hinge, a first wall coupled to said first hinge, a second hinge directly coupled to said first wall, and a second wall coupled to said second hinge, both of said first wall and said second wall being formed extending away from an interior of said container relative to a longitudinal axis of said container; inverting said first wall about said first hinge toward the interior of said container relative to the longitudinal axis; and after said inverting said first wall, inverting said second wall about said second hinge toward the interior of said container relative to the longitudinal axis, wherein rigidity of said base prevents substantial net distortion of said base during inversion of said second wall, and wherein said inverting said first wall is performed prior to filling the container.