| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem that separate disposal is required for glass wool used as a core material of a vacuum heat insulating material in disposal, an environmental burden is large, and in wool obtained by fiberizing versatile resin such as polyethylene terephthalate or polypropylene as a substitute for the glass wool, a contact area between the fibers is increased when atmospheric pressure is applied, and heat insulating performance is deteriorated. <P>SOLUTION: As the fiber constituting the core material, the fiber obtained by spinning a polymer resin having a bending modulus of 3,000 MPa or larger is used, and as the quality of the material, 80% or more of polyester fiber is contained. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
