Abstract: The inventions describes a roller for guiding a film web and for subjecting the film web to an at least partially radially inwardly directed force, wherein openings are provided in the surface for applying the inwardly directed force, wherein the openings can be subjected at least partially to a negative pressure from a negative pressure source. For this purpose, at least one device for increasing the radially inwardly directed force and/or the roller are/is configured such that the film web is movable relative to the roller surface without damage being brought about on the film web.

Abstract: The invention relates to a system (10) for improved introduction of a separating device (40) into a flattened film tube (2) of a blown film line (1), with a cutting device (20) for severing only a first tube side (2.1) of the film tube (2), in particular the film tube (2) which has not yet been flattened. Furthermore, the invention relates to a blown film line (1), as well as a method (100) for producing and providing at least two film webs (6).

Abstract: The invention describes a process for starting up a film production in a film manufacturing machine, in particular a blown film machine, by means of a control device, comprising the following steps: detecting a start-up request setting start-up parameters providing film material commencing the film production setting film production parameters.

Abstract: The invention relates to a system (10) for improved introduction of a separating device (40) into a flattened film tube (2) of a blown film line (1), with a cutting device (20) for severing only a first tube side (2.1) of the film tube (2), in particular the film tube (2) which has not yet been flattened. Furthermore, the invention relates to a blown film line (1), as well as a method (100) for producing and providing at least two film webs (6).

Abstract: The invention relates to a method for winding up a film web, which is created in particular on a film production system, on at least one winding reel, wherein quality features of the winding reel (100) are determined. In order to determine quality features of the winding reel, at least the following steps are carried out: taking out measurements on the winding reel (100) and providing measurement values for the measurements; and filtering out at least one item of characteristic data from the measurement values.

Abstract: The invention relates to a device for changing a reel and for connecting a new material web to the end of an old material web, with a first reel (101) from which the first material web thereof which is wound thereon can be unwound, a transport device (103), particularly a transport roller, by means of which the first material web can be guided in a guiding region at a transport speed, a second reel (121) with which the new material web can be prepared, a drive device for rotatably driving the second reel, a separating device (142) for cutting through the first material web, by means of which the material web can be cut through in the guiding region or upstream of the guiding region in order to produce a trailing end, and a control and/or regulating device for the mutual adjustment of the trailing end and the beginning (125) of the second material web, such that the trailing end and the beginning of the web are at a distance of more than 0 mm from each other and particularly do not overlap.

Abstract: The invention relates to a method for adapting at least one winding parameter of a winding device during winding of a film web on a winding core, having the following steps: —conveying of the film web along a measuring path between a first driven roll and a second driven roll—increasing of the web tension of the film web between the first roll and the second roll—continuous detecting of the drive parameters of the first roll and of the second roll at least in the form of the torque and the circumferential speed, —determining of a stress-strain diagram from the detected drive parameters—adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core.

Abstract: The invention relates to a device for changing a reel and for connecting a new material web to the end of an old material web, with a first reel (101) from which the first material web thereof which is wound thereon can be unwound, a transport device (103), particularly a transport roller, by means of which the first material web can be guided in a guiding region at a transport speed, a second reel (121) with which the new material web can be prepared, a drive device for rotatably driving the second reel, a separating device (142) for cutting through the first material web, by means of which the material web can be cut through in the guiding region or upstream of the guiding region in order to produce a trailing end, and a control and/or regulating device for the mutual adjustment of the trailing end and the beginning (125) of the second material web, such that the trailing end and the beginning of the web are at a distance of more than 0 mm from each other and particularly do not overlap.

Abstract: A reversing device for a film web, which has a take-off device, has at least one turning device and at least one deflecting roller. The film web can be guided by the take-off device via the at least one turning device and the at least one deflecting roller to a winding device. The axes of the take-off device, the at least one turning device, and the at least one deflecting roller are adjustable in angle relative to one another. The at least one deflecting roller is formed as an expander roller having an expanding capacity which increases towards the end faces of the deflecting roller.

Abstract: The invention relates to a method for adapting at least one winding parameter of a winding device during winding of a film web on a winding core, having the following steps:—conveying of the film web along a measuring path between a first driven roll and a second driven roll—increasing of the web tension of the film web between the first roll and the second roll—continuous detecting of the drive parameters of the first roll and of the second roll at least in the form of the torque and the circumferential speed,—determining of a stress-strain diagram from the detected drive parameters—adapting of at least one winding parameter of the winding device on the basis of the determined stress-strain diagram in order to achieve a defined elongation of the film web during winding on the winding core.

Abstract: The invention relates to a reversing device for a film web, which has a take-off device, at least one turning-device and at least one deflecting roller, wherein the film web can be guided by the take-off device via the at least one turning device and the at least one deflecting roller to a winding device and the axes of the take-off device, the at least one turning device and the at least one deflecting roller are adjustable in angle relative to one another, characterised in that the at least one deflecting roller is formed as an expander roller having an expanding capacity which increases towards the end faces of the deflecting roller.