Method for determining the flatness of flexible web material, method for evaluating the flatness of web material, flatness measuring arrangement and blown film line with such a flatness measuring device
AssigneeKdesign GmbH
InventorsRichard ZIMMERMANN, Daniel LAMERS
Life of this patent
Estimating the term…
Abstract
A method for determining flatness of a flexible web material in a manufacturing process of the flexible web material includes: determining an actual flatness of the web material; determining a first process parameter of the manufacturing process; converting the actual flatness of the web material into at least one comparative value of the actual flatness of the web material depending on the first process parameter.
Claims15
A method for determining flatness of a flexible web material in a manufacturing process of the flexible web material, the method comprising steps of:
- determining an actual flatness of the web material,
- determining a first process parameter of the manufacturing process,
- converting the actual flatness of the web material into at least one comparative value of the actual flatness of the web material depending on the first process parameter.
A flatness measuring arrangement for a web material, in particular for a plastic web, comprising:
- a flatness measuring unit which is configured to determine an actual flatness of the web material, in particular an actual topography of a surface of the web material, in a detection section of the web material;
- a web tension unit adapted to detect a web tension in the detection section of the web material;
- and
- an evaluation unit which is configured to convert the actual flatness into at least one comparative value of the actual flatness of the web material depending on the web tension.
Dependencies are inferred from the claim text.