Abstract: Polyvinyl acetal films with less blocking tendency and which allow for escape of gas during laminating to form laminated composities are prepared by a process for embossing a film comprising plasticized polyvinyl acetal with a roughness Rz on at least one surfaces of 20 to 100 ?m by the steps of a. extruding of plasticised polyvinyl acetal to a film with a stochastic roughness of the surfaces of Rz =1 to 70 ?m, b. embossing at least one surface of the film obtained in step a) with channels having a depth of 5-50 ?m, a width of 10-200 ?m and a pitch of 50-2500 ?m, wherein c. the surface roughness of the elevations between the channels is at most 20% lower as obtained in step a).

Abstract: A multiple signal transmission unit includes input/output modules having top and bottom portions which are connected electrically and mechanically via a plug connection. The bottom portions are designed exclusively for the current supply of the neighboring module of a line of modules by spring contacts which pass through the bottom portions from lineup side to lineup side. These modules are in contact connection from bottom portion to bottom portion via the spring contacts, while all elements of the circuit are associated with the top portions for the control of the machines, subassemblies, and the like that are connected with the modules.