MAIN CONTAINER BODY, PACKAGING CONTAINER, MAIN CONTAINER BODY MANUFACTURING METHOD AND MANUFACTURING DEVICE

摘要

A packaging container (1) is provided with a flat roughly circular main container body (20), the depression (21) of which stores contents. A lid (30) for closing an opening (22) formed in a flat roughly circular shape in the center of the main container body (20) is heat-sealed to a flange (23) that is disposed on the periphery of the opening. The heat sealing of this flange (23) and the lid (30) is performed at a circular seal part (40). The main container body (20) is formed of a multilayer sheet (25) that is made of a sealing layer (251), an intermediate layer (252) and a base material layer (253). On the inner periphery side of the seal part (40), a resin pocket (33) is formed.