Abstract: The apparatus for emitting light according to the present disclosure can include one or more linearly arranged devices for radiating light and one or more optical components which can be inserted into extruded profile. The extruded profile can be configured as hollow in an exemplary embodiment and can have an exit aperture for the egress of light from the extruded profile. The extruded profile can advantageously be configured in one piece, thereby permitting much easier assembly. Finally, the effect can also be achieved that dirt particles are not able to get into the carrier structure as readily, since a one-piece extruded profile has apertures that must be sealed only on one of its long sides and at its ends. The extruded profile can be used for different lighting tasks. The light-radiating devices can be inserted in variable positions in slots inside the extruded profile. In addition, the ideal optical components can be chosen and inserted in positions provided for them.

Abstract: In the case of a method for sensing a marking (2) of a running web of material (3), the web of material is optically scanned by an image recording device (6). This generates in successive measuring cycles image signals which are fed to an image processing device (7). This image processing device (7) determines the positional values of the marking (2) of the web of material (3). A validity signal is generated from these positional values by applying a position-dependent weighting function and is output. This validity signal indicates whether the currently determined positional value is valid.

Abstract: A method for detecting defects in, and/or geometrical characteristics of, at least one joint or splice of sheet pieces, in a unloaded state, characterised by the following steps: a. subjecting said joint or splice to a non-unidirectional electromagnetic radiation; b. performing a two-dimensional detection of the radiation reflected or refracted by said joint or splice; c. generating output signals corresponding to said two-dimensional detection; d. determining possible defects or the geometrical characteristics of at least part of said joint or splice, by analysing, said output signals.

Abstract: The invention pertains to an apparatus to measure a tensile force within at least one material web or at least one material strand or a corresponding force (FM) that is exerted on the apparatus, or a transmitted force (FÜ) resulting therefrom. The apparatus comprises at least one roller barrel (1), at least one bearing (2) to rotatably mount the roller barrel (1), at least one first force transfer element (3) to transfer the transmitted force (FÜ), said element designed to react to this transmitted force (FÜ) with an elongation, compression or other shape change in a direction parallel to the axis of rotation (A) of the at least one roller barrel (1), and at least one sensor (7) that is connected to the at least one first force transfer element (1). According to one aspect of the invention, the apparatus further comprises at least one second force transfer element (4) that extends inside the associated roller barrel (1) and that is connected to the first force transfer element (3).

Abstract: The invention relates to a method and a system for position control of one or more webs, particularly of paper-like or board-like webs, which are preferably used in manufacturing corrugated board and corrugated board which has a natural edge. For controlling the web position by means of position manipulation apparatuses, position information is used, which is detected downstream by position detection means.