US Patent 7584864 Structure of container having barrier material layer

The structure of a container having a barrier material layer, formed by blow molding, having a multilayer section structure including the barrier material layer and thermoplastic resin layers positioned inside and outside the barrier material layer, and fixed to a fixation object by bolt through a flange formed in a pinch-off portion, wherein in the flange a thin thickness portion is locally formed so that a multilayer section shape is compressed and a bolt fixing hole is drilled to insert the bolt in the thin thickness portion.