| 摘要 |
PROBLEM TO BE SOLVED: To prevent an offensive smell from infiltrating into the interior of a cup-shaped vessel made up by applying an external material formed of a coated paper to the exterior of a paper-made cup main body when each of stacked-up vessels are separated from one another. SOLUTION: A surface resin layer 30 formed of a thermoplastic resin is used for the exterior of the external material 20 covering the trunk part 11 of the cup main body.
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