Method For Monitoring A Film Quality And Film Machine
AssigneeWindmoller & Holscher
InventorsTorsten Schmitz, Daniel Faustmann, Bernd-Alexander Groepper
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Abstract
The invention relates to a method for monitoring a film quality in the production of a plastic film, comprising the following steps: —determining a first temperature (10) of a film material (1) of the plastic film during a transport of the film material (1), in which the film material (1) is cooled along a conveying direction (2) of the film material (1). The invention further relates to a film machine (50) comprising a device for monitoring a film quality in the production of a plastic film.
Claims16
A method for monitoring a film quality in the production of a plastic film, comprising the following steps:
- determining a first temperature of a film material of the plastic film during a transport of the film material at which the film material cools along a conveying direction of the film material,
- provide a temperature-dependent definition of a quality condition of film quality,
- evaluating the first temperature of the film material on the basis of the temperature-dependent definition of the quality condition,
- wherein the determination of the first temperature of the film material of the plastic film occurs on a transport device, wherein a second temperature is detected at at least one second determination position, wherein the first and second determination positions are at least arranged in the axial direction or in the circumferential direction of the transport device, a single temperature-dependent definition of a quality condition of the film quality being provided for each determination position and being evaluated on the basis of the respective temperature at the respective determination position.
A film machine with a device for monitoring a film quality during the production of a plastic film with
- an outlet means configured to deliver film material of the plastic film to a transport device so that at least the film material cools in before or on the transport device,
- a sensor unit for detecting a first temperature of the film material in front of or at the transport device and a control unit for providing a temperature-dependent definition of a quality condition of the film quality and for evaluating the first temperature of the film material on the basis of the temperature-dependent definition of the quality condition, wherein the control unit is adapted to perform a method for monitoring a film quality in the production of a plastic film, comprising the following steps:
- determining a first temperature of a film material of the plastic film during a transport of the film material at which the film material cools along a conveying direction of the film material,
- provide a temperature-dependent definition of a quality condition of film quality, evaluating the first temperature of the film material on the basis of the temperature-dependent definition of the quality condition,
- wherein the determination of the first temperature of the film material of the plastic film occurs on a transport device, wherein a second temperature is detected at at least one second determination position, wherein the first and second determination positions are at least arranged in the axial direction or in the circumferential direction of the transport device, a single temperature-dependent definition of a quality condition of the film quality being provided for each determination position and being evaluated on the basis of the respective temperature at the respective determination position.
Dependencies are inferred from the claim text.