METHOD FOR MANUFACTURING VACUUM FOAM HEAT INSULATING BODY AND CORE MATERIAL USING BEADS METHOD POLYSTYRENE FOAM, AND THE VACUUM FOAM HEAT INSULATING BODY BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a vacuum foam heat insulating body and a core material using beads method polystyrene foam and the vacuum foam heat insulating body by the method capable of solving problems that beads method polystyrene foam conventionally used as a heat insulating material is a closed cell foamed body structure, has no air permeability, and vacuum evacuation of itself is impossible, and capable of performing vacuum evacuation by a simple means without using a special working technique.;SOLUTION: Foam particles are put into a container, the foam particles are heated by the steam in a pot, and preliminarily foamed beads 3 having 20-50 times, preferably 37 times of V/W (bulkiness) are made, the preliminarily foamed beads 3 are put into a mold, and the core material 30 in the desired shape is obtained. The core material 30 is covered by a vacuum sealing material 6, and the vacuum evacuation is performed, and the vacuum sealing material is fused and sealed. Thus, the vacuum foam heat insulating body 5 is formed.;COPYRIGHT: (C)2011,JPO&INPIT