| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum thermal insulation panel superior in thermal insulation performance, recyclability and environmental compatibility, capable of reducing cost and weight, and capable of freely changing the size, and to provide a warming box having thermal insulation performance without an individual difference, hardly causing strain, repetitively usable, superior in environmental compatibility, capable of reducing cost and weight, and capable of freely changing the size. <P>SOLUTION: The vacuum thermal insulation panel and the warming box of this invention have an upper stage grating core material 21 constituted with a corrugated board raw material as a base material, a lower stage grating core material 22 constituted with the corrugated board raw material as the base material, and a coating film sheet 3 sealing this periphery by laminating the upper stage grating core material 21 and the lower stage grating core material 22, and is mainly characterized by making the inside of the coating film sheet 3 vacuous by laminating the upper stage grating core material 21 and the lower stage grating core material 22 by only point contact. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
