| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a paper vessel of excellent watertightness while preventing any paper edge from being exposed outside the vessel. <P>SOLUTION: In a gable top type paper vessel (10) comprising a square prismatic barrel portion having four side plates formed by folding a rectangular blank formed of a laminate material having a thermoplastic synthetic resin layer on an innermost layer and an outermost layer with a paper as a base material from a pre-formed rule and a tab for sticking continuous to one of the side plates and connected to the adjacent side plate, a gable-top type top part which is folded and closed in a gable-roof shape formed on one opening end part of the barrel portion, and a bottom portion formed on the other opening end part of the barrel portion, each paper edge portion of a side seal part (S) to seal the barrel portion, a top seal part (T) to seal the top portion, and a bottom seal part (B) to seal the bottom portion is protected by a thermoplastic resin layer. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
