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Adjusting device and method for controlling an exit thickness of a nozzle exit gap of a flat film machine

A technology of outlet thickness and nozzle outlet, applied in the field of adjustment devices, can solve problems such as difficulty in reproduction and inability to adjust

Active Publication Date: 2021-05-14
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

Another disadvantage is that the manual setting is such that it cannot or is very difficult to reproduce

Method used

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  • Adjusting device and method for controlling an exit thickness of a nozzle exit gap of a flat film machine
  • Adjusting device and method for controlling an exit thickness of a nozzle exit gap of a flat film machine
  • Adjusting device and method for controlling an exit thickness of a nozzle exit gap of a flat film machine

Examples

Experimental program
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Embodiment Construction

[0034]figure 1 A flat film machine 100 is shown schematically. The melt is output through the nozzle outlet slit 110, and then the film web 200 is cooled on a large cast roller or the cooling roller. Further delivery of the chilled thin film web 200 is shown by an arrow and, for example, a film volume can be wound. By means of the adjustment device 10, the outlet thickness AD of the nozzle device 110 can be changed, so that the thickness distribution of the melt thickness distribution or the thin film web web 200 can be affected. Here, it is also clear that the adjustment device 10 can use the corresponding storage device 30, and the specific relative position of the individual regulating bolt 20 can be stored in the storage device 30.

[0035]infigure 2 withimage 3 A top view of the nozzle outlet slit 110 of the flat machine 100 can be seen in the middle. By means of the adjustment device 10, all individual regulatory bolts 20 can now be specifically controlled in their longitudinal e...

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PUM

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Abstract

The invention relates to an adjusting device (10) for controlling an exit thickness (AD) of a nozzle exit gap (110) of a flat film machine (100), having a plurality of adjusting pins (20) for carrying out an adjusting movement for changing the exit thickness (AD), the adjusting pins (20) having an adjusting range (SB) between a closing end position (SE) and an opening end position (OE), the adjusting range (SB), proceeding from the opening end position (OE), furthermore having a basic travel path (BH) for a basic adjustment of the exit thickness (AD) and, proceeding from the closing end position (SE), having a process travel path (PH) for process controlling the exit thickness (AD).

Description

Technical field[0001]The present invention relates to a regulating apparatus for controlling the outlet thickness of the nozzle outlet slit of a flat film and a method for controlling such a nozzle outlet gap.Background technique[0002]It is known that the flat machine is used to provide and manufacture flat product. To this end, the planar machine is provided with a plurality of or one nozzle outlet gap, and the melt can be output as a thin film web in a wide and flat form. The film web is applied to the cooling roller downstream of the nozzle outlet gap and is cooled by it. Through the other rolls in the flat machine, the flat film thus manufactured can be wound. It is also possible to coat or laminate the melt. Thus, for example, one or more melt plan web can be co-extruded.[0003]A disadvantage of a solution for a planar machine is known that the artificial modulation step must be performed at least when switching between initial products and subsequent products. The same situatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/31B29C48/92B29C48/08
CPCB29C48/08B29C48/313B29C2948/92152B29C2948/92647B29C2948/92904B29C48/92B29C48/305
Inventor 托斯滕·施米茨沃尔德玛·科勒尔伯恩德-亚历山大·格罗普
Owner 温德默勒及霍乐沙两合公司
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