| 摘要 |
PURPOSE:To make finishing satisfactory by enclosing at least the upper surface of an asphalt sheet with a synthetic resin sheet so as to be placed on the panel sheet of a vehicle body whereby fusing the asphalt sheet on the body by heat from a hot air furnace used for painting. CONSTITUTION:Asphalt, extender pigment, process oil, plasticizer and the like are adequately mixed and kneaded so as to be spread into an asphalt sheet 1 in a sheet form whereby the whole surface of it is enclosed with a general purpose polyethylene sheet 2 which is superior in acid resistance and alkali resistance, thereby sealing its surrounding while being thermally deposited for preventing foreign objects such as water and the like from breaking in. And said asphalt sheet 1 is placed on a vehicle body 3 in a sheet metal work process, after than, the body 3 is forwarded into a painting process to receive electro-deposition coating and the like. In this case, each sheet 1 and 2 is melted by heat from a hot air furnace which is used to bake paint coated by the electro-deposit coating for hot setting, thereby fusing the asphalt sheet 1 on the body 3. |
