Abstract: A plastic film of a thermoplastic synthetic resin is made in a film-making system by extrusion from a die of an extruder. First the plastic is melted and extruded from the die as a tube or web that is, typically after cooling and stretching, formed into a package. At least one reference parameter is provided, and, during continuous operation of the system, two input parameters different from the reference parameter are measured by respective measuring devices An output is determined from these reference parameters and is compared with the reference parameter.

Abstract: A system for making a nonwoven nonwoven spun-bond or melt-blown fabric has a spinneret for spinning fibers or filaments, a cooler downstream of the spinneret for cooling the spun fibers or filaments, a stretcher downstream of the cooler for stretching the cooled fibers or filaments, and a conveyor downstream of the stretcher. The stretched and cooled fibers or filaments are deposited as a nonwoven web on the conveyor. Sensors measure input parameters at the spinneret, at the cooler, at the stretcher, and/or at at least one diffuser or at the conveyor. An evaluating unit for determining an output parameter from the measured input parameter with respect to a predetermined reference parameter.

Abstract: A plastic-extrusion system comprises a plurality of system components including an extruder and a collection device for collecting the extruded plastic material. The plastic-extrusion system has an operator station designed for taking in and outputting data of the plastic-extrusion system. The operator station further has a mobile terminal including a screen of a graphical user interface as well as a camera. The plastic-extrusion system is associated with at least one information source, and preferably a plurality of information sources. The operator station is configured so as to provide access to the at least one information source, and preferably to the plurality of information sources.

Abstract: In a method for manufacturing blown film web on a blown film line, film is heated above the takeoff device and then treated mechanically. This allows the film to be brought from initial heat to an easy-to-process temperature level with little energy. A horizontally oriented treatment roll path is provided between the takeoff and a reversing device is arranged above the takeoff. In both aspects, controlling is performed to achieve a uniform film gauge after stretching.

Abstract: The invention relates to various aspects in the production of extrusion products. The properties of extruded articles are dependent significantly, in addition to their formulation, also on the setting variables and in particular on the thus resulting process variables. The setting variables and in particular the process variables thus represent a state of the extrusion process characterized as “fingerprint”. The thus claimed invention takes into account these facts and supports the operator of a production plant to detect earlier changes in quality and to systematically counteract a deterioration in the quality.

Abstract: The invention relates to the determination of the optical quality of a film. On the one hand, a correlation of the obtained measured values with the production parameters, which are detected in a time-synchronous manner at the extrusion plant, is carried out. On the other hand, a correlation of said obtained measurement data with the geometric and/or functional properties of a film, for example the water vapor permeability, is carried out. The obtained correlation of data is used in the process for controlling the running production process of the film to an optimum operating point. Consequently, the resulting functional properties of a film are improved in an automated manner and met according to the desired specifications. The operator can predetermine which geometric and/or functional properties of a film are accepted as a control variable.

Abstract: The invention relates to a multi-layer blowing head for a blown film installation, to a blown film installation, and to a method for operating a blown film installation. Specifically, according to the invention, a component is included on the opposite side of a distributor plate of a distributor plate set for a spiral distributor, wherein part of the spiral distributor is formed out of the opposite side of a distributor plate. The blowing head according to the invention for forming a multi-layer melt flow makes it possible, in the case of suitable operating parameters, to prevent the occurrence of spiral strips or at least to make said spiral strips less pronounced.

Abstract: The invention relates to the detection and use of film topography (23) of a film web (13, 40, 51) produced in blow film or casting film methods for improving the quality of the film web (13, 40, 51). In particular, film topography (23) can be quantitatively detected using said the invention. In another aspect of the invention, the film topography (23) is analysed using a pattern recognition algorithm and is optionally allocated an error image (50). This information is used in order to improve the quality of the film web (13, 40, 51) by controlling action recommendations dependent on the error image and to quantitatively detect the flatness of a film web (13, 40, 51). The invention also relates to an influencing element (30) for influencing the properties of a film web (13, 40, 51) in the position where the film topography (23) is determined.

Abstract: The invention relates to various aspects in the production and further processing of plastic sheet material, in particular a spun-bonded non-woven fabric, a melt-blown non-woven fabric, a composite non-woven fabric, a blown film, a flat film, a plastic board or a plastic panel. A core aspect in the value chain of sheet material is a method and device for providing, retrieving and using a data element for exchanging in an over-lapping step-wise manner, a plurality of different data elements for producing the end product within the value chain of the sheet material. Within the value chain, it is possible to optimize the method using said data, to improve the construction of the used machines and systems and to improve the system technology as well as method technology for producing the sheet material.

Abstract: A system for making a nonwoven nonwoven spun-bond or melt-blown fabric has a spinneret for spinning fibers or filaments, a cooler downstream of the spinneret for cooling the spun fibers or filaments, a stretcher downstream of the cooler for stretching the cooled fibers or filaments, and a conveyor downstream of the stretcher. The stretched and cooled fibers or filaments are deposited as a nonwoven web on the conveyor. Sensors measure input parameters at the spinneret, at the cooler, at the stretcher, and/or at at least one diffuser or at the conveyor. An evaluating unit for determining an output parameter from the measured input parameter with respect to a predetermined reference parameter.

Abstract: A plastic-extrusion system comprises a plurality of system components including an extruder and a collection device for collecting the extruded plastic material. The plastic-extrusion system has an operator station designed for taking in and outputting data of the plastic-extrusion system. The operator station further has a mobile terminal including a screen of a graphical user interface as well as a camera. The plastic-extrusion system is associated with at least one information source, and preferably a plurality of information sources. The operator station is configured so as to provide access to the at least one information source, and preferably to the plurality of information sources.

Abstract: A plastic film of a thermoplastic synthetic resin is made in a film-making system by extrusion from a die of an extruder. First the plastic is melted and extruded from the die as a tube or web that is, typically after cooling and stretching, formed into a package. At least one reference parameter is provided, and, during continuous operation of the system, two input parameters different from the reference parameter are measured by respective measuring devices An output is determined from these reference parameters and is compared with the reference parameter.

Abstract: In a method for manufacturing blown film web on a blown film line, film is heated above the takeoff device and then treated mechanically. This allows the film to be brought from initial heat to an easy-to-process temperature level with little energy. A horizontally oriented treatment roll path is provided between the takeoff and a reversing device is arranged above the takeoff. In both aspects, controlling is performed to achieve a uniform film gauge after stretching.

Abstract: A method for producing a continuous film with a flow film line includes the steps of actively heating an annular nozzle at an outlet via a first tempering component in reference to the inflowing plastic melt such that the exiting plastic melt is heated. While the melt channel system upstream is actively cooled via a second tempering component in referent to the inflowing plastic melt such that the plastic melt flowing along is cooled in the direction towards the annular nozzle. This leads to a stable film because the absolute temperature of the plastic melt is not rising to critical ranges. Simultaneously, melt fractures are avoided when the blow head is heated at its outlet from the annular nozzle.

Abstract: The formation of paraffin condensate on an inner cooling body of a blown film extruder can be either avoided or allowed in a controlled manner and then removed, thereby reducing damages to the film tube or even avoiding them. In an inner cooling body for a blown film extrusion line, the inner cooling body includes a shell around which a blown film tube, coming from the annular die, can ascend against gravity or can descend with gravity when the blown film extrusion line is running. The shell has a fraction condensate diverter for keeping paraffin condensate or any other condensate away from potential contact points of the blown film tube on the shell.