| 摘要 |
PROBLEM TO BE SOLVED: To firmly weld two resin components to each other at a low cost while reducing energy consumption.SOLUTION: An outer cover 2 with a seal leg 6 and a housing 3 with a flange part 13 are prepared for manufacturing a vehicle lighting appliance. A first area to be welded 4 is set on a projecting end surface of the seal leg 6, and a second area to be welded 5 is set on a top surface of the flange part 13. A hot plate 8 is made to contact with or approach the seal leg 6 to melt the first area to be welded 4 by heating. Plasma 9 is applied to the second area to be welded 5 to modify the second region to be welded 5 to a rough surface portion 11 by surface modification effect of the plasma 9. The first area to be welded 4 and the rough surface portion 11 are pressure-contacted with each other to combine the outer cover 2 and the housing 3 by melting.SELECTED DRAWING: Figure 2 |
