| 摘要 |
In an apparatus for sequential sealing of panels and for cutting articles from panels of thermoplastic material, said apparatus being of the type comprising two compressible sealing dies, an upper die (2) and a lower die (1) respectively, between which the panels (11) are sequentially conveyed and sealed as well as a separating belt (9) situated between the lower die and the panels for preventing the latter from sticking to the lower die (1), the upper die (2) is movable and operates at a temperature of about 100 to 120 DEG C, while lower die (1) is stationary and operates at a temperature of about 200 to 250 DEG C. The apparatus is further provided with a heat-insulating curtain (14) movable to and from a position between the lower die (1) and the panels (11) and a position at a distance the working area of the lower die (1). As a result the sealing process can be temporarily interrupted without the panels (11) in the sealing apparatus being damaged or destroyed and without lowering the temperature of the lower die (1). |
