Apparatus and Method for Film Production and/or Film Processing

Abstract

The invention relates to an apparatus and to a method for film production and/or film processing, characterized by a device for determining the flatness and/or evenness of the film and for further processing and/or outputting the determined results.

Claims

1. An apparatus for film production and/or film processing, characterized by a device for determining the flatness and/or evenness of the film and for further processing and/or outputting the determined results.

2. The apparatus according to the preceding claim, characterized in that, by means of the device for determining the flatness and/or evenness of the film, the flatness or the evenness can be determined over the entire film width.

3. The apparatus according to claim 1, characterized in that the device for determining the flatness and/or evenness of the film extends over the entire width of the film.

4. The apparatus according to claim 1, characterized in that the determination of the flatness and/or evenness of the film can be carried out repeatedly at time intervals.

5. The apparatus according to claim 1, characterized in that a device for determining the tension is provided, by means of which the tension of the film can be determined in the area of the device for determining the flatness and/or evenness of the film.

6. The apparatus according to claim 1, characterized in that at least two devices for determining the flatness and/or evenness of the film are provided, by means of which, for the upper side and the lower side of the film, in particular of a double-layer film, the flatness or the evenness can be determined independently of one another.

7. The apparatus according to claim 1, characterized in that an evaluation and control device is provided, to which the determined results can be transmitted and by means of which other components of the apparatuses can be controlled.

8. The apparatus according to claim 1, characterized in that, by means of the evaluation and control device, an output tool of the apparatus can be controlled, by means of which data and/or indications concerning the flatness or evenness of the film can be output.

9. The apparatus according to claim 1, characterized in that, by means of the evaluation and control device, a recording device, in particular a memory device, can be actuated, by means of which determined results can be recorded, in particular stored.

10. The apparatus according to claim 1, characterized in that, by means of the evaluation and control device, the determined results can be compared with at least one target value, and in case of a deviation from this target value, other components of the apparatus can be actuated by said evaluation and control device.

11. The apparatus according to claim 1, characterized in that, based on the determined values, at least one quality number can be determined.

12. The apparatus according to claim 1, characterized in that determined values and/or the at least one quality number for at least one film roll can be determined individually and/or uniquely associated with said roll.

13. The apparatus according to claim 1, characterized in that the device for determining the flatness or the evenness of the film comprises a distance measurement device, by means of which, over the width of the film, the distance from a reference line can be determined.

14. The apparatus according to claim 1, characterized in that the device for determining the flatness and/or evenness of the film comprises an optical distance measurement system and/or a contacting distance measurement system.

15. (canceled)

16. The apparatus according to claim 1, characterized in that the device for determining the flatness and/or evenness of the film is arranged between two draw devices by means of which the web tension of the film can be set, respectively.

17. The apparatus according to claim 1, characterized in that a blown film installation or a flat film installation or a device for stretching the film is provided.

18-19. (canceled)

20. The apparatus according to claim 1, characterized in that a winding device is provided, and the device for determining the flatness and/or evenness of the film, viewed along the transport path of the film, is provided before the winding device.

21. A method for film production and/or film processing, characterized in that the flatness and/or evenness of the film is/are determined and the determined results are further processed and/or output.

22. The method according to the preceding claim, characterized in that, by means of the device for determining the flatness and/or evenness of the film, the flatness and/or evenness is/are determined over the entire film width.

23. The method according to claim 21, characterized in that the determination of the flatness and/or evenness of the film is carried out repeatedly at time intervals.

24. The method according to claim 21, characterized in that the determined results are transmitted to an evaluation and control device, and by means of the evaluation and control device, other components of the apparatuses are controlled.

25. The method according to claim 21, characterized in that, by means of the evaluation and control device, the determined results are compared with at least one target value, and in case of a deviation from this target value, other components of the apparatus are actuated by means of the evaluation and control device.

Description

[0037] Other advantages, features and details of the invention result from the following description in which, in reference to the figures, different embodiment examples are explained in detail. The features mentioned in the claims and in the description in each case can be essential for the invention individually or in any combination of said features. In the context of the entire disclosure, features and details which are described in connection with the inventive method naturally are naturally also applicable in connection with the inventive apparatus for film production and/or film processing and in each case vice versa, so that, with regard to the disclosure reference is or can always be made mutually to the individual aspects of the invention.