| 摘要 |
Provided are a funnel part and a method for manufacturing a packaging container in which the funnel part is used. The funnel part is manufactured using: a step for curving a blank to form a tapered first intermediate body; a step for folding back and welding the opening on the narrow-opening side of the first intermediate body to form a second intermediate body; a step for folding back the opening on the wide-opening side of the second intermediate body to the outer side to form a third intermediate body having a side-wall portion; and a step for drawing the third intermediate body and forming a cylindrical exhaust part constituting the narrow-opening side opening, a first tapered taper part connected to the exhaust part, and a second tapered taper part having a taper angle smaller than that of the first taper part. The packaging container is manufactured using: a step for forming a cup-shaped container body having a cylindrical side wall, a bottom, and an open end; and a step for orienting the wide-opening side opening of the funnel part toward the bottom of the container body, inserting the funnel part from through the open end of the container body toward the interior, and joining the outer surface of the side wall to the inner circumferential surface of the funnel part. |
