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Method for calibrating adjustment means for adjusting a die gap of an outlet die for a film web on a flat film machine

A technology for adjusting mechanisms, outlet nozzles, applied in applications, flat products, household appliances, etc., which can solve the problems of high time, high time expenditure and production loss, lack of repeatability, etc.

Pending Publication Date: 2021-06-04
温德默勒及霍乐沙两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to lack of repeatability, the above approach also leads to high time-consuming
If a full calibration is required, a downtime is necessary, resulting in a high expenditure of time and loss of production

Method used

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  • Method for calibrating adjustment means for adjusting a die gap of an outlet die for a film web on a flat film machine
  • Method for calibrating adjustment means for adjusting a die gap of an outlet die for a film web on a flat film machine
  • Method for calibrating adjustment means for adjusting a die gap of an outlet die for a film web on a flat film machine

Examples

Experimental program
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Embodiment Construction

[0032] figure 1 and figure 2 Shown is a film flattener 100 in which a nozzle slot 112 of an outlet nozzle 110 is provided over the entire transverse direction QR. The film web FB is delivered from the nozzle slit 112 in the production direction PR. In order to adjust the thickness profile of the film web FB, a plurality of adjustment mechanisms 120 in the form of heat-sensitive pins are provided here.

[0033] figure 2 A heat-sensitive pin, shown as an adjustment mechanism 120 , acts on the nozzle lip above the nozzle slit 112 from above. Thermal expansion of the adjustment mechanism 120, through the application of thermal energy, reduces the nozzle gap 112, resulting in a corresponding reduction in the strength or thickness profile of the film web. figure 1 The control device 10 is shown on the left side of the flat film machine 100 . In this case, the calibration position KP can now be predetermined by means of the presetting module. Based on this, a corresponding co...

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Abstract

The invention relates to a method and a device for calibrating adjustment means (120) for adjusting a die gap (112) of an outlet die (110) for a film web (FB) on a flat film machine (100), the method having the following steps: - specifying a calibration position (KP) for the adjustment means (120), - performing an inspection in order to change the adjustment position (SP) of the adjustment means (120), - detecting when the calibration position (KP) of the adjustment means (120) has been reached.

Description

technical field [0001] The invention relates to a method for calibrating an adjustment mechanism for adjusting the nozzle gap of an outlet nozzle for a film web on a film flattener and a control device for carrying out such a method. Background technique [0002] It is known that flat film machines are used to provide flat film products. For this purpose, such flat film machines have a large number of extrusion units, which are able to produce the corresponding material composition for the different layers of the film product. The melt as a material composition is now discharged over the entire width from the nozzle gap of the outlet nozzle of the flat film machine. After solidification of the melt, the film product exists in the form of a film web, which is cooled on cooling rolls. The film web in the form of a film product can be wound up on a winding shaft by means of a number of subsequent roll trains. It is also possible to coat or laminate the melt. Thus, for examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/31B29C48/08B29C48/25B29C48/92B29C48/10
CPCB29C48/313B29C48/08B29C48/10B29C48/2692B29C48/92B29C2948/92133B29C2948/92152B29C2948/92209B29C2948/92628B29C2948/92647B29C2948/92704B29C2948/92942B29C2948/92571B29C2948/92904B29C2948/92076B29C2948/92409B29L2007/008
Inventor T·施密茨W·科勒尔B-A·格罗佩尔
Owner 温德默勒及霍乐沙两合公司
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