| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a blank wherein a body part of a paper vessel or an edge part of a blank forming the vessel itself is covered by a synthetic resin film and also to provide a paper vessel excellent in a water resistance, an oil resistance and a gas barrier property by using the blank. SOLUTION: In a method for producing a blank forming a body part of a vessel or the vessel itself by punching a blank from a substrate paper, holes are punched previously in the substrate paper at an edge part corresponding to the place to be punched along the edge part, and a thermoplastic resin is laminated on the both surfaces of the substrate paper wherein holes are punched in a thickness of 20μm or higher, and then a blank is punched from the substrate paper in such a way that the thermoplastic resin film formed in the hole parts constitutes an ear part extending to one edge part of the blank. COPYRIGHT: (C)2009,JPO&INPIT
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