| 摘要 |
PROBLEM TO BE SOLVED: To obtain a vacuum body of necessary size and to use materials distributed on the market by enabling an airtight surface material to be joined since a conventional vacuum body is restricted in its size by the product size of an airtight surface material used as a surface material and a plurality of vacuum bodies need to be used for area larger than the product size of the airtight surface material resulting in lower soundproof performance and lower heat-insulation performance because of a gap between frame parts of the vacuum bodies and the vacuum bodies. SOLUTION: The vacuum body 6 is characterized in that an extrusion molded material such as aluminum is used and ends of adjacent airtight surface materials 7 are formed in an engagement shape 12, a plurality of airtight surface materials 7 are joined by engagement, and joined parts and outer peripheral parts are sealed with an adhesive tape and a tacky adhesive material 11. COPYRIGHT: (C)2004,JPO&NCIPI
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