| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot air welding nozzle capable of quickly welding superposed sealing sheets, in particular, superposed asphalt-made sealing sheets, and a hot air welding apparatus. <P>SOLUTION: The hot air welding nozzle 5 is constituted as described below to secure a long preheating range of the sealing sheets and realize quick welding of the sealing sheets. That is, the hot air welding nozzle 5 has a hot air pipe 7, heating plates 9, 10 placed above and below to form an air chamber 11 and at least one rearward blowing port 12 provided in the end section of the upper/lower heating plates 9, 10 for blowing hot air in the direction opposite to the moving direction of the hot air welding apparatus 1, and is further provided with at least one forward blowing port 13 for blowing hot air in the moving direction of the hot air welding apparatus 1 and at least one air flow guiding member 14 provided on the side face far away from the hot air pipe 7 and protruding from the ends of the heating plates 9, 10. <P>COPYRIGHT: (C)2008,JPO&INPIT |
