Jamco Corporation

Hideo Tokonabe

Katsuhiko Umeda

The present invention is directed to cost-effectively provide a high-strength large vacuum heat-insulating panel with a honeycomb core of non-permeable independent cells by means of simplified instruments and method. One goal of the invention is that the core retains an original shape at its lateral ends from the beginning of a procedure of evacuating air into a vacuum condition till the end of panel bonding, and another is ensuring a long lasting air-tight sealing in the honeycomb core. The vacuum heat-insulating panel according to the invention includes a vacuum core element ( ) of non-permeable honeycomb structure and a surface element ( ) bonded thereto by fusing an air-permeable bonding element (woven cloth made of fibrous adhesive of thermoplastic resin or unwoven cloth of the fibrous adhesive) . The surface element has its edges bent to provide protection covers

Vacuum heat-insulating panel and method of manufacturing the same

The present invention provides a vacuum heat-insulating block including a honeycomb core, wherein the block structure prevents the honeycomb core having a low bulk specific gravity from collapsing by atmospheric pressure, the block attaining flexibility and sound absorption property. The vacuum heat-insulating block according to the present invention is basically composed of a core utilizing a plurality of layered honeycomb members (formed by bonding a honeycomb core member to a support plate ) and covering the core with a cover member . Moreover, a woven or non-woven fabric having air permeability is disposed between the layers of honeycomb core members

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Tokyo, Japan

Hideo Tokonabe