| 摘要 |
In a welding method involving the use of directly applied heat to obtain the welding of plastics sheets (10), the sheets are moved continuously past means (26) for the longitudinal welding thereof and past welding tool (34) forming part of welding assembly (14) and the arranged so as to be reciprocable in both the direction of movement of the continuously moving sheets and transversely to these sheets so that intermittent transverse welding of the plastics sheet materials is obtained. <IMAGE> |
