| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel vacuum heat insulation material making a core material easily flexible to improve shape adaptable performance and deformable performance, and a heat insulation box body using the vacuum heat insulation material.SOLUTION: On one of at least external surfaces of a core material formed by laminating a fiber sheet as a component of a vacuum heat insulation material, a plurality of recess parts and projection parts are provided. With this constitution, since the recess parts and the projection parts are provided in the core material, the thickness of the recess parts is thinner than the thickness of the projection part to enable force to be easily concentrated, which attains flexibility. Consequently, the recess parts and the projection parts are widely distributed in the surface of the core material, so that the vacuum heat isolation material is made flexible easily in an arbitrary direction and shape adaptable performance and deformable performance can be improved.SELECTED DRAWING: Figure 1 |
