| abstract |
(57) [Abstract] [Problem] Good moldability, high heat resistance, heat insulation and heat retention, It is possible to provide a heat-resistant food container that simultaneously satisfies appropriate strength and gas barrier properties. A non-expanded polyester resin film, an ethylene-vinyl alcohol copolymer resin film, a non-expanded polyester resin film, and a polyester resin foam sheet are laminated in this order. Thermoforming so that |