| 摘要 |
A hot-welding process which makes it possible to obtain a weld of any desired depth in each zone of the welded elements. The strip used consists of at least two superimposed thicknesses, one made of a hot-welding material having a fusion temperature of the same order as that of the film, and the other being made of a support material having a higher fusion temperature. The process comprises the steps of heating a section of the strip to a temperature between the fusion temperature of the hot-welding material of which it is made and that of the support material, transferring this section to the film, applying the fusion face of the strip to the film, and simultaneously producing differential cooling of the materials. These operations are then reproduced on an adjacent section of the strip, until the latter has been welded along its entire length. |
