| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulation material excellent in handleability, work efficiency and production efficiency in manufacture and recycle, capable of reducing the environmental load, and capable of maintaining sufficient heat insulation performance over a long period. <P>SOLUTION: In the vacuum heat insulation material, a core material is directly accommodated in a state of depressurization by an external wrapping material, and the core material is a nonwoven fabric constituted by polyester short fibers and polyester binder short fibers as main fibers, and the polyester short fibers are heat-bonded by melting or softening of binder components of the polyester binder short fibers. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
