The utilization will be expected from the high-insulated characteristic as a tool of energy saving also in the various insulation fields as for the vacuum insulation panel (VIP) in the future. It is necessary to covering VIP more area for energy saving, so that the bending forming method of VIP desired under keeping the ability of thermal conductivities. By measuring the increased amount of thermal conductivity against strain of multilayer film using for VIP, the maximum strain is cleared, and also analysis methods of VIP was established by using structural analysis software. So that the analysis system for bending forming ware able to be calucureted as the reliability about VIP.
