METHOD FOR MANUFACTURING BIAXIALLY ORIENTED BLOW CONTAINERS AND APPARATUS FOR MANUFACTURING THE SAME

摘要

The present invention provides a method and apparatus for manufacturing a biaxially oriented blow container, characterized in that in forming a preform into a primary molded article having a configuration of a container by orientation blow molding and contracting the primary molded article by heat treatment to blow mold it into a container, a predetermined internal pressure is maintained in the primary molded article during said heat treatment and the contraction is controlled by said internal pressure.