| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-insulated container wherein an inwardly curled portion of a sleeve can be easily formed and a good curl shape can be provided. SOLUTION: The heat-insulated container comprises a cup body 2 having a side wall 2a and a bottom 2b disposed on the lower end side of the wall 2a and a sheet-shaped sleeve material, and an inwardly curled portion 3a formed by folding back the sleeve material toward the center of the container is formed at the lower end of the sleeve material. At the upper end of the sleeve material, a bonding area to be bonded to the side wall 2a of the body 2 is formed, and a sleeve 3 is provided to ensure a space outside the wall 2a over at least a portion between the curled portion 3a and the bonding area. The radius of curvature of the sleeve material at the inwardly curled portion 3a is set in the range of 0.6-2.0 mm.
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