| 摘要 |
The invention relates to a device for the monoaxial or biaxial stretching of film sections, preferably by means of a stretching frame, for films made substantially of polymers, wherein a square or rectangular section of such a film is held on 4 sides by at least two grippers in each case, wherein with a view to an improved process said device is configured and modified in such a way that both the lower fixed gripper and/or the upper movable gripper can be heated preferably independently of the heating of the film by at least one, preferably each heating system. |
