| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that conventionally, forces are exerted to a pour port through valley fold lines and ridge fold lines so as to open the port; however, these lines are formed deeply, and hence a film breaks easily on the lines and a thick film is required, or instead of a thick film, if the cross section of a fold line is formed into a semi-spherical shape or the like, the folded part attracts attention and wrinkles are formed on a nozzle part and external appearances are injured. SOLUTION: A nozzle has a pour port formed by cutting off the forward end thereof and a protruding embossed part wherein the nozzle has nearly the same width from the pour port to the root of the nozzle and the width of the nozzle is then gradually narrowed from the root toward the base on the side of a storage part, while on each of the opposite sides of the embossed part, a skirt is formed in such a manner that its width is gradually narrowed from the root of the nozzle toward the base on the side of the storage part of the embossed part.
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