| 摘要 |
Profiles (1) are cut to sections defining the required length. Sections are thermally welded, avoiding welding of parts determining the required length. An Independent claim is included for the frame so produced. Preferred features: Length-determining parts of the sections are butted during assembly by welding (hence defining fixed lengths). The profiles are cut, setting back their lateral sides, set-back determining the required profile length. They have beveled closure sections (3, 4), which can be moved between open and closed positions, fixed to them. The set-back determining required profile length is at the closure section location. The profiles may be set back at a sealing joint. Following welding, joint ends are adhered together. The set-back is 1-3 mm. A plastic or metal profile of appropriate length is integrated inside the profiles, assisting butting during thermal welding assembly. |
