PROBLEM TO BE SOLVED: To provide a heat-resistant container that is relatively lightweight and hardly deforms even when pressure is applied when heated.SOLUTION: A heat-resistant container includes a container body which has a storage part in which stored substance is stored, and is made of a thermoplastic polyester resin foam, where the container body has a mass of 0.5 to 5.0 g, the capacity of the storage part is 100 cm3 or less, and the thermoplastic polyester resin foam is a heat-resistant polyester resin foam.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】比較的軽量であり且つ加熱されたときに圧力が加わっても形状が変形し難い耐熱容器を提供することを課題とする。【解決手段】被収容物が収容される収容部を有し、熱可塑性ポリエステル系樹脂発泡体からなる容器本体を備え、該容器本体の質量は、０．５～５．０ｇであり、前記収容部の容量は、１００ｃｍ３以下であり、前記熱可塑性ポリエステル系樹脂発泡体は、耐熱性ポリエスエル系樹脂発泡体である、耐熱容器。【選択図】図１
