CONTAINER MAIN BODY AND PROCESS FOR PRODUCTION THEREOF, AND PACKAGING CONTAINER

摘要

Disclosed is a process for producing a container main body that is produced by molding a sheet composed of at least two layers, i.e., a seal layer and a base material layer. The process is characterized by involving a container main body molding step of thermally molding the sheet while pressing a flange part of the sheet (which is a part of the sheet) by means of a pressure of 10 to 25 kg/cm2 inclusive using a flange-pressing member capable of pressing the flange part and a mold on which the sheet is to be thermally molded into the container main body, thereby producing the container main body which has a thinned or missing part in the seal layer on the edge part of an opening of the container main body which is located on the inner periphery side of the flange part.