| 摘要 |
PURPOSE:To obtain a light and heat-insulating roof by providing heat-insulating materials between an inner roof upon an inner frame and an outer roof. CONSTITUTION:An inner roof 4 is placed upon an inner frame 3 provided on side boards 1, and covered with heat-insulating materals 5, upon which an outer roof 7 is directly placed. for this outer roof 7, a thin plate can be used just to cover heat- insulating materials 5 from wind and rain. Since the roof 7 is not so heavy, it does not lie hard on heat-insulating materials 5 to lower the heat-insulating capacity. Heat-insulating materials 5 of polyurethane resin can be supplied between the inner roof 4 and the outer roof 7 by the process of foaming injection. |
