Patent ID: 7614515
Filing Date: 2009-11-10
Classification: B29B,B29C,B29K,B65D

Abstract:
1. A blow molded, peelably laminated plastic container comprising: air intake ports disposed in outer layer; and a bottom having a bottom seal, which is formed by pressing a preform tube flat and pinching off the tube by means of a pinch-off section of a blow mold, said bottom seal comprising a bottom rib, formed in the shape of a ridge by laying a pair of rib strips side by side and pressing these rib strips to each other, and also cavities formed in this bottom rib, wherein multiple cave-like cavities are laterally disposed in the bottom rib in such a way that the rib strip on one side is pushed toward, and caved into, the rib strip on the other side at several points to form the cavities, and vice versa, and wherein an expanded portion is formed in the back area of each cavity in an expanded state within a dimensional limit to which blow mold pins for forming the cavities can be forcibly pulled out of the cavities without allowing the expanded portions to lose the molded shape.