| 摘要 |
PURPOSE: To provide a heat-insulator filled in a hollow part of heat-insulating tableware having an inner and outer double-shell structure, excellent in heat- insulation. CONSTITUTION: Heat-insulators 16, 20 having inner and outer double wall structures 13, 14, 17, 18 and filled in hollow part 15, 19 of heat insulating tableware 11, 12, are made of a mold-foamed molding made from thermoplastic pre-expansion particles. The mold-foamed molding is molded so that a trace 40 of a hole for filling the pre-expansion particles and a traces 42, 43, 44 of a heat medium supply hole are located only in a part 38 in the vicinity of the bottom part thereof. |
