| 摘要 |
PURPOSE:To attain an improvement in dimensional stability and beautiful appearance after hot welding, by a method wherein after a filmy member, which is to be joined, has been heat-welded and a weld part is cooled forcibly while the weld part is being pressed. CONSTITUTION:A filmy members 11a, 11b are heat-welded at a weld part 15 by a heating and pressing device (for example, an iron) 17 by mounting the weld part 15 on a rest 14. Positions of heating, cooling and pressing devices 17, 23 and the filmy members 11a, 11b are moved relatively so that the weld part 15 whose joining has not been completed can be heated and welded by the heating and pressing device 17 and the weld part whose joining has been completed can be cooled forcibly by the cooling and pressing device 23. In consequence of the above, shrinkage of the filmy member due to distortion decreases, a dimensional error before and after heating and welding becomes smaller, dimensional stability is improved and an improvement in a beautiful appearance can be attained. |
