Abstract: A device for laminating two different foils in vacuo with the aid of an electrical gas discharge has two separate treatment chambers or areas, in which different vacuo can be set, so that the treatment can be adjusted in accordance with the corresponding foil, i.e. it can be performed in an optimum manner in accordance with the physical and chemical characteristics of the foil. The electrical gas discharge is a plasma discharge, i.e. a low energy gas discharge in vacuo. Advantageously, the electrodes can be operated at different power levels in the individual, separate treatment areas. For adapting the atmosphere in the treatment areas to the foil characteristics, it is also possible to introduce different gases and optionally carry out an additional heat treatment.

Abstract: Cutting width modifying means for a machine for cutting a web of material and having groups of cutting elements of the bottom blade kind for longitudinal cutting of the web wherein the cutting elements are provided as sleeves mounted on a shaft, releasably secured against rotation thereon by keys and axially adjustable by means of externally screw threaded rings mounted in screw threaded portions of the bores of the sleeves and non-rotatably secured on the shaft, retaining means being provided selectively to retain one or more of the sleeves against rotation so that it or they is or are axially adjusted on the shaft upon rotation of the shaft by a servo motor.

Abstract: A biaxial web stretching machine has diverging tong conveying screws and the screws are provided with double or triple threads to provide relatively high speed tong movement with a relatively low speed of screw rotation.