| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plastic cup which can be reduced in volume by crushing. SOLUTION: For an injection-molded plastic cup comprising a side wall 1 in an inverted truncated conical shape, a bottom plate 2 having a bottom hoop 3 at its periphery, and a flange 4 provided at an opening thereof, the bottom plate 2 is curved toward the outside, thin lines 5 each in the form of depressed groove are provided at the inside of the side wall 1 and the bottom plate 2 respectively crossing a plurality of vertical sections extending along the center axis 9 of the plastic cup, and notches 8 each opened toward the outside are provided at the bottom hoop 3 on positions whereon the thin lines 5 pass through.</p> |
