Nippon Sanso Corporation

Hidefumi Kamachi

Masashi Yamada

Atsuhiko Tanaka

Takafumi Fujii

Kensuke Furuyama

Yasuhiko Komiya

Rikiya Kato

Seiichi Itoh

Thermally insulated synthetic resin container and thermally insulated

A thermally insulated double-walled synthetic resin container having a thermal insulator layer filled with a low thermal conductivity gas, wherein the inner container and the outer container are formed from a chemical resistant resin, a hole portion is provided at the enter of the bottom wall of the outer container, this hole portion is sealed by a sealing panel formed from chemical resistant resin; a protrusion portion is formed on the thermal insulator layer side of the bottom central portion of the outer container and a depression portion aligned with the center of the protrusion portion is formed on the reverse side of this protrusion portion; or a metallic thin film layer is formed on the surfaces facing the thermal insulator layer aside from the area around the mouth; as a result of which the thermally insulated double-walled synthetic resin container is provided with exceptional thermal insulation capabilities and strength.

Method for producing a thermally insulated double-walled synthetic resin

A thermally insulated synthetic resin container formed by providing, within a space formed in between an inner container and an outer container which are joined as a single body and forms a double walled synthetic resin container, a thermally insulating synthetic resin layer having a double wall structure, which has gas having low thermal conductivity having a thermal conductivity lower than that of air, filled between the two walls; and said thermally insulated synthetic resin container which comprises a thermally insulating layer supporting means for securing to said double walled container said thermally insulating layer provided in the space within said double walled container, thereby preventing the rattling of said thermally insulating layer, eliminates the need for forming the metal plating film, and has superior thermally insulating capabilities and durability, and manufacturing thereof is easy and inexpensive, recycling of the synthetic resin is easy, the rattling noise produced when consumers use the containers or lids is eliminated, and the discrepancies in the index times are lost, thereby improving production management and quality control.

Insulated synthetic resin container and insulated synthetic resin lid

Thermally insulated double-walled synthetic resin container and

A thermally-insulated double-walled container is disclosed made of synthetic resin which is formed by joining together an inner container and an outer container in a unitary fashion to form a space therebetween; wherein a thermoinsulating layer is formed in the space between the inner container and the outer container by filling the space with at least one low thermoconductive gas selected from the group consisting of xenon, krypton, and argon; and wherein the inner container and the outer container are multilayer molded from different synthetic resin materials. The container provides an excellent gas-barrier capacity without requiring plating of the outer surface of the inner container or the inner surface of the outer container in the double walled container and maintains its mechanical strength over a long period of time and having an excellent thermoinsulating capacity. The container is suitable as a thermos, cooler box, ice cooler, thermoinsulated cup, insulated lunch box, or the like.

Thermally-insulated double-walled synthetic-resin container

Growing community of inventors

Tokyo, Japan

Hidefumi Kamachi