| 摘要 |
A method for mutual thermowelding fixing of elements of synthetic resin, e. g. fixing of flaps (17) to walls (18) of a container (2), obtained from a flat blank (1), includes first heating internal surfaces (17a, 18a) of said flaps (17) and walls (18), which are to adhere to each other, by means of hot air heaters (60). Then, in the same way, second heaters (70) heat the surfaces (21a) of additional sheets which are to be fixed to the walls (2a) of the container (2). Afterwards, the surfaces (17a, 18a) are made to adhere to each other, as well as the surfaces (21a) and the walls (2a), while first pressing means (80) and second pressing means (90) are applied thereto respectively, to perform uniform pressure thereon and in order to allow thermowelding of the surfaces. |
