| 摘要 |
According to the present invention, a foldable paper cup is characterized by having a bottom paper (20), made of a coating paper of which the outer surface forms a bottom paper coating layer (20b), folded convexly upward along a center folding line (21) in a lateral direction inside the lower part of a cup body (10) and fused; fusing the bottom paper (20) along a curved fusing line (20c) and with a bottom fusing band (20d); folding both ends (25, 25′) of the bottom paper (20) inward by a certain width in a longitudinal direction; having the bottom of the cup body (10) cut in order to form a curved bottom (17); and having the center of the curved bottom (17) at the same height as the lifted height of the bottom of a folding line in opened state (11)(11′). |
