Toppan Printing Co., Ltd.

Jyun Sada

Takeshi Saito

Noriyuki Sasaki

Masashi Goto

Takashi Terayama

Shinji Kaneyuki

A funnel component is manufactured by the following processes: forming a first intermediate product that is tapered, by rolling the blank material; forming a second intermediate product by folding back and welding a narrow opening side portion of the first intermediate product; forming a third intermediate product having the side wall portion by folding the wide opening side portion of the second intermediate product back outward; forming a cylindrical discharge portion forming the narrow opening side portion, a first tapered portion that connects to the discharge portion and has a tapered shape, and a second tapered portion that has a tapered shape having a taper angle less than the first tapered portion, by performing a drawing process on the third intermediate product.

Funnel component and manufacturing method for manufacturing packaging container using funnel component

A funnel component, and a packaging container using the funnel component are provided. A funnel component includes: a funnel portion having a diameter that is increased from a narrow opening side toward a wide opening side; a discharge portion that connects with an end portion on the narrow opening side; and a side wall portion that surrounds an opening portion, on the wide opening side, of the funnel portion, connects with the funnel portion, and is fitted into the container body. The funnel component is integrally formed by a sheet member including paper and sealant layer. A folded portion is formed, by the sheet member being folded back and welded over entire circumference, at an opening portion of the discharge portion. The packaging container is formed by the funnel component being fitted into a container body having an open end, a bottom portion, and a side wall.

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Tokyo, Japan

Jyun Sada