To provide heat insulating property and heat retaining property simply and in low costs on a surface of a container such as can and a bottle, a tableware such as a tumbler and a glass, and an apparatus that is necessitated heat insulation, by coating heat insulating coat on a surface of a tape.

Heat insulating coat is coated on a surface of a heat insulating material 1 composed of an one surface adhesive tape wound around a cylindrical body 2, and a heat insulating layer 3 is formed. The heat insulating layer 3 is formed as heat insulating coat, e.g. Templex (R), and an adhesive layer 4 is formed on a back surface of the heat insulating material 1. The heat insulating material which is cut for a prescribed length is stuck on or wound around a surface of a container such as a can and a bottle, a tableware such as such as a tumbler and a glass, and an apparatus that is necessitated heat insulation, and heat insulating property and heat retaining property are provided on those surfaces. It is thus possible to prevent dew condensation caused by a low temperature, and temperature raising caused by a high temperature, and it is also possible to hold a temperature for a long time.