Device for stretching film sections in a monoaxial or biaxial manner

A device for stretching film sections in a monoaxial or biaxial manner preferably by means of a stretching frame, for films (7) which are preferably made essentially from polymers, wherein a square or rectangular section of such a film is seized at four sides by at least two tenter hooks (15) each, characterised in that an upper tenter hook part (11) is mounted in an articulated manner on a rotational axis located outside the film to be stretched, and more precisely such that a lower, fixed tenter hook part (13) carries a joint, while an upper tenter hook part (11) is designed so as to pivot upwards, and at least one cylinder (14, 16) is disposed horizontally on a vertical web rotated through 90° for applying tensioning power and thus applies the tensioning power to the upper, pivotable tenter hook part (11), and that a plurality of tensioning cylinders (14, 16) disposed horizontally beside one another are disposed axially offset on the respective tenter hook, for example in such a way that a first tensioning cylinder (14) for example is mounted on the first tenter hook with a short flange, a second tensioning cylinder (16) is mounted on the second tenter hook axially offset by the length of the first tensioning cylinder (14), a third tensioning cylinder is mounted on a third tenter hook with a short flange, and so forth.