METHOD FOR MANUFACTURING AN ANGLED AND CYLINDRICAL CONTAINER

摘要

The present invention relates to a method for manufacturing a container including a body portion having a sectional shape of a polygon (more than a triangle). Particularly, the present invention is characterized in that a preliminarily formed container, wherein a body member of fan-shape, square-shape or the like is pasted together to form a cylindrical configuration and a closing member is secured to one of upper and lower open ends, is subjected to vacuum attraction through an attractive hole provided in a mandrel which is polygonal in section and in which sides constituting a polygon are inwardly somewhat curved, whereby the body member is formed into a polygonal cylindrical configuration and sides thereof are depressed in conformity with a sectional shape of the mandrel to form a container, which is thereafter disengaged from the mandrel by feeding compressed air through the attractive hole of the mandrel. The invention is suitable for a method for manufacturing a paper container for filling with juice or the like at a high temperature.