| 摘要 |
PURPOSE: Provided is a portable cup of square shape, which includes a plurality of folding lines and can be carried easily and reused hygienically and conveniently. CONSTITUTION: The square cup(10) of which top face is opened comprises a vertical folding line(11) formed at the central point of both sides of the cup from the top to the bottom for folding the both side faces toward the inside of the cup, an incline folding line(12) diverged into two lines from the both ends of the vertical folding lines and extended to both side corners and a horizontal folding line(13) extended from the diverged points of the vertical folding line and the incline folding line to the front face for folding the bottom face of the cup toward the front of the cup.
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