PAPER CUP FOR MICROWAVE OVEN

To provide a paper cup of a flat-bottom-type that is less likely to get burned even if the cup is used in a microwave oven and can self-stand stably, which is configured so that a problem of poor adhesion between a bent part and a bottom surface of the cup is less likely to occur.SOLUTION: The paper cup for a microwave oven comprises a cylindrical trunk member 11 and a bottom member 12 for closing a lower end of the trunk member 11. A lower end part of the trunk member 11 is bent toward internally to closely adhere to an outer surface of the bottom member 12. On an outer surface of the lower end part of the trunk member adhering to the outer surface of the bottom member 12 are alternately formed and arranged a plurality of concave surface parts 21 and convex surface parts 22.SELECTED DRAWING: Figure 6 【課題】電子レンジで使用しても焦げにくく，かつ安定して自立可能なフラット・ボトム・タイプの紙カップであって,また屈曲部分とカップ底面との接着不良の問題を生じにくくした紙カップを提供する。【解決手段】電子レンジ用紙カップは，筒状の胴部材１１と，胴部材１１の下端を閉じる底部材１２とを備える。胴部材１１の下端部が内側に屈曲されて，底部材１２の外面に密着している。底部材１２の外面に密着した胴部下端部の外面に，凹面部２１と凸面部２２とが交互に複数形成されて並んでいる。【選択図】図６