Container for packaging

Abstract

This article is a packaging container formed by shaping a sheet-like blank shown in the reference development drawing with a press. While the blank shown in the reference development drawing is folded in a mountain fold at the broken line and in a valley fold at the two-dot chain line, the synthetic resin coating layer provided on the surface of the blank melts by being heated while the blank is pressed during shaping, and the blank is crimped to maintain the shape as a packaging container. Further, the outer edge of the blank is edge-rolled to form an edge-rolled portion having a substantially circular cross-section at the edge of the container, thereby improving the overall strength and stably maintaining the shape of the container.