AIR BLOWING DEVICE IN FOAMING EQUIPMENT OF FOAMED HEAT INSULATION MATERIAL

摘要

PURPOSE:To reduce hazards of an explosion and fire, by a method wherein a chamber filling and foaming raw materials and a chamber solidifying them after the foaming are separated from each other and a suction filter sucking a hydrocarbon is installed into a blower route of the solidifying chamber. CONSTITUTION:A suction filter 22 comprised of a conductive fiber material and an active carbon suction material is installed into a circulation air path 21 and the suction filter 22 is earthed. In the fourth process 6, both stock solutions through a hydrocarbon stock solution storage tank 23 and polyol stock solution storage tank 24 of pentane or cyclopentane into which nitrogen gas is enclosed are mixed 25 up with each other. The stock solutions are supplied to a casting machine 28 through a piping path arriving at the casting machine 28 by storing in a work tank 26 and a piping path storing in a work tank 30 from an isocyanate stock solution storage tank 29 and arriving at the casting machine 28 by a pump 31. The final mixing is performed by the casting machine 28 and filled up into a space between a pair of walls. Hereby, density of the hydrocarbon in a cure chamber 20 can be lowered.