To prevent a shrink film from separating from a container body when the shrink film is used in the state that it is closely stuck on the container body, by bonding at least a part of the shrink film with the side wall of the container body.

About 3.0 mm thick foamed styrene sheet is formed to make the container and about 0.2 mm thick colored (white) high impact styrene sheet is formed to make the cover. About 50 μm thick polyvinyl chloride is used for preforming as the shrink film. An aqueous emulsion forming a diameter as bag as about 10 mm on sticking it with pressure is applied by an exclusive coating device, at four positions of the side wall of the container body. And the container is coated with the preform and heated in a furnace to further shrink the preform and firmly stick it on the container body. In this way, the emulsion is spread thin to reduce the solidifying time as short as possible (24 hours more or less) and obtain a container preventing the shrink film from peeling off.