The invention relates to a method for the indirect determination of a specific formulation with an extrusion process in an extrusion device (10) comprising the following steps: determination of measurement data of at least one processing parameter of the extrusion process of the extrusion device (10), comparing the determined measurement data with saved data saved in relation to the specific formulation of the same processing parameter, determination of the deviation of the measurement data from the saved data of the same processing parameters and comparing of the deviation with a predefined deviation threshold.

A computer program causing a computer to execute processing of detecting an abnormality of an industrial machine having a movable part is provided. The computer executes the processing oft acquiring physical quantity data on a time-series basis output from a sensor detecting a physical quantity related to a motion of the movable part; converting the physical quantity data on a time-series basis acquired to a time-series data image representing the physical quantity data; inputting the time-series data image converted to a learning model to calculate a feature of the time-series data image, the learning model being trained with a feature of the time-series data image related to the movable part in a normal condition; and determining a presence or an absence of an abnormality of the industrial machine based on the calculated feature.

A method of cleaning a powder coating production line, the method including: providing a powder coating production line including equipment, an automatic cleaning tool, and a monitoring device; receiving, by the equipment, an instruction of automatic cleaning, and allowing the equipment to enter an automatic cleaning mode; cleaning, by the automatic cleaning tool, the equipment of the powder coating production line; monitoring, according to a preset monitoring condition and by the monitoring device, whether the automatic cleaning is completed; stopping the automatic cleaning when the monitoring device indicates the automatic cleaning has been completed, or continuing the automatic cleaning of the equipment; and turning off the automatic cleaning mode of the equipment.

A system and a method for controlling an extrusion line of mixed plastics, wherein a temperature of one or more heaters of the extrusion line is measured by one or more first sensors; a temperature and pressure of an extruder head is measured by one or more pairs of second sensors; a coolant temperature of a set of dies is measured by one or more third sensors; an amperage of an extruder motor is measured by an ammeter; a pulling speed of a pulling unit is measured by a tester; and wherein a computing device configured to receive the measurement data from the one or more first sensors, from the one or more pairs of the second sensors, from the one or more third sensors, from the ammeter, from the tester.

A rotating extrusion rheometer includes a control monitoring mechanism, a melt extrusion mechanism, a rotating extrusion rheology machine head, a sensor, a drive chain wheel, a coupler and an electric motor. The control monitoring mechanism, the melt extrusion mechanism, the rotating extrusion rheology machine head are sequentially connected. The rotating extrusion rheology machine head is formed by a connecting pipe (1), a flow dividing support (3), a lower machine neck (12), a machine head piece (15), an opening mold (17), an opening-mold driving chain wheel (20), a core bar (21) and a core-bar driving mechanism. The rheology measurement method comprises the steps where some parameter values of the rheometer are collected first, and then the rheological behaviors of the polymer melt in the rotating extrusion process are obtained by performing calculation by means of using the derived formula.

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.

A process for treating polymer granular material (2) comprising the steps of heating and drying the polymer granular material in a drying hopper (10) by means of a drying gas, discharging a portion of the polymer granular material into an extruder (101), inside which the polymer granular material is brought to a molten or semi-molten state and transported along the extruder by a rotating screw (104) in order to be injected into a mould (102) or caused to pass through an extrusion head. The process provides for measuring a control parameter which is correlated with the rotation of the screw inside the extruder and regulating the flow rate of the drying gas on the basis of the control parameter.

Dimensional limitation in attachment of a torque detection device in a molding machine is reduced. A molding machine system is provided, the molding machine system including: a molding machine including a cylinder, a first screw and a second screw embedded in the cylinder, and a motor rotationally driving the first screw and the second screw; a feature-amount identification apparatus detecting a torque of the motor as one example of a feature amount related to an operation state of the molding machine; a torque detection device attached to a rotational shaft of the first screw and detecting a torque of the first screw; and a torque derivation apparatus deriving a torque of the second screw from the torque of the motor detected by the feature-amount identification apparatus and the torque of the first screw detected by the torque detection device.

A simulation device is a simulation device simulating a behavior of an extruder, comprises: an acquisition unit that acquires data related to a behavior of the extruder from a control device performing operation control of the extruder, a sensor provided on the extruder or an imaging device imaging a component constituting the extruder; and an arithmetic unit that calculates a physical property indicating a behavior of the extruder on the basis of acquired data.

The invention describes a method for producing a plastics film by a film-extruding machine, wherein at least two plastics materials from at least two reservoirs are fed together to one extruder or are each fed to a respective extruder, the plastics materials are melted in the extruder or in the extruders and are conveyed as a melt strand or as melt strands into a die head, the melt Strand or the melt strands are spread out flat in the die head and is/are extruded from a die of the die head as a melt film, and the melt film and/or the film sheet formed by cooling is/are drawn off by at least one take-off roll. It should particularly be noted that measured values are recorded by means of a measuring device for at least one property of at least one plastics material and/or at least one melt strand /d/ or the melt film and/or the film sheet and/or for a machine parameter of the film-extruding machine and that a first plastics material is a plastics material with varying material properties and a second plastics material is a plastics material with substantially constant material properties, wherein the first and the second plastics materials are fed to the extruder or the extruders in relative proportions, the relative proportions being varied according to the measured values for the property.