A device for the uniaxial or biaxial stretching of plastics material portions by means of a stretching frame having the following features: - two first guide rails (7a, 7b) are provided, which are at a distance from one another and extend in parallel and are movable perpendicularly thereto, - two second guide rails (9a, 9b) are provided, which at a distance to one another and extend in parallel and are movable perpendicularly thereto, - the first guide rails (7a, 7b) are aligned perpendicularly to the second guide rails (9a, 9b) and are arranged so that all four guide rails (7a, 7b; 9a, 9b) form a rectangle or a square or approximately a rectangular shape or a square in plan view, - on the two first and the two second guide rails (7a, 7b; 9a, 9b) at least two respective clips are arranged, by means of which a film portion to be stretched can be clamped for carrying out a stretching process, - the two first guide rails and the two second guide rails (7a, 7b; 9a, 9b) are movable between a starting position to be moved towards one another and an end position movable away from one another such that a previously inserted and fastened film portion is stretched either uniaxially or biaxially, characterised by the following further features: - the device is constructed such that in addition to the starting position at the beginning of a stretching process and the end position after performing a stretching process, the guide rails (7a, 7b; 9a, 9b) and thus the clips seated thereon are additionally movable into a loading position, and - the loading position is arranged so that it lies asymmetrically within the stretching frame and is thus at least closer to one longitudinal side of the stretching frame than to the opposite side of the stretching frame. - two first guide rails (7a, 7b) are provided, which are at a distance from one another and extend in parallel and are movable perpendicularly thereto, - two second guide rails (9a, 9b) are provided, which at a distance to one another and extend in parallel and are movable perpendicularly thereto, - the first guide rails (7a, 7b) are aligned perpendicularly to the second guide rails (9a, 9b) and are arranged so that all four guide rails (7a, 7b; 9a, 9b) form a rectangle or a square or approximately a rectangular shape or a square in plan view, - on the two first and the two second guide rails (7a, 7b; 9a, 9b) at least two respective clips are arranged, by means of which a film portion to be stretched can be clamped for carrying out a stretching process, - the two first guide rails and the two second guide rails (7a, 7b; 9a, 9b) are movable between a starting position to be moved towards one another and an end position movable away from one another such that a previously inserted and fastened film portion is stretched either uniaxially or biaxially, - the device is constructed such that in addition to the starting position at the beginning of a stretching process and the end position after performing a stretching process, the guide rails (7a, 7b; 9a, 9b) and thus the clips seated thereon are additionally movable into a loading position, and - the loading position is arranged so that it lies asymmetrically within the stretching frame and is thus at least closer to one longitudinal side of the stretching frame than to the opposite side of the stretching frame.