| 摘要 |
PURPOSE: A structure of a square paper cup is provided, which facilitates opening of a lid and keeps appearance of the cup clean after opening of the lid. CONSTITUTION: A structure of a square paper cup comprises: a square paper cup(10) in which a bent portion(11) is formed in the top and the bottom surface is formed in order to form a fixed space in the bottom; and a lid(20) in which a handle(24) is formed in one corner part, a cutting line(23) is formed at the regular interval in the square end tip which is in accord with the inner side of the square paper cup, and a square protrusion(21) is formed around the center.
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