| 摘要 |
PURPOSE:To prepare the heat insulation boad without inhibiting the function of a connecting apparatus by a method wherein a foaming jig is arranged between both inner and other plates mounting a connecting apparatus therein and a foaming stock liquid is poured to be foamed and solidified as well as a gas between both plates is exhausted through a gas passing pore. CONSTITUTION:A periphery and an outer surface of both inner and outer plates 4, 5 arranged in a condition leaving a space therebetween are covered by the foaming jig 20 mounting a frame body, a base plate 24 and a press plate 25 and, if a stock liquid of a heat insulation material 6 is poured from a pouring port 22, the heat insulation material is foamed and expanded gradually. In this time, air between both inner and outer plates 4, 5 and a gas generated from the heat insulation material 6 are pressed as the heat insulation board is expanded and flowed to a direction of a gas passing part 18 and exhausted externally from a pierced pore 23 through a gas permeable member 19, the gas passing port 18 and a key chamber 13. As air and a gas exhaustion is completed, the heat insulation material 6 is solidified while the gas permeable member is extruded into a cylindrical portion by a foaming pressure in such a condition that a part of said heat insulation material 6 is impregnated in said gas permeable member 19 and the heat insulation board 2 is obtained. |
