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Method and device for changing the production of a flat film machine from an input product to a subsequent product

A product, flat film technology, applied in the direction of flat products, applications, program control, etc., can solve the problems of high cost, non-existent conversion mechanism reproducibility, etc.

Active Publication Date: 2021-06-11
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

[0003]The disadvantage of the known solution is the high cost involved in the changeover of different products and the lack of reproducibility of the changeover mechanism

Method used

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  • Method and device for changing the production of a flat film machine from an input product to a subsequent product
  • Method and device for changing the production of a flat film machine from an input product to a subsequent product
  • Method and device for changing the production of a flat film machine from an input product to a subsequent product

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] figure 1 and figure 2 It is schematically shown how the film flattener 100 may be constructed. Via the nozzle arrangement 100 the film web 200 can be discharged in liquid state and applied to a large cooling roll which is not shown in detail. The film web 200 now continues over a plurality of roller-like rolls and can be reprocessed, cut and / or wound.

[0034] here, in figure 1 The production of the initial product EP is shown in , in which case, for example, a defined clear width and / or a defined outlet width of the nozzle arrangement 110 is specified. If it is now desired to switch to the follow-on product FP, then according to this embodiment the setting variable SG is recorded at one or more points by the changing device 10 as an initial set value ES. Here, the determination module 30 in the lower right corner can be used for thickness determination, for example. The central determination module can, for example, record a control variable SG in the form of the...

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PUM

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Abstract

The invention relates to a method for changing the production of a flat film machine (100) from an input product (EP) to a subsequent product (FP), having the following steps: - detecting a change request for a change from the input product (EP) to the subsequent product (FP), - determining a current input adjustment value (ES) of at least one adjustment variable (SG) of the flat film machine (100) for the input product (EP), - determining a subsequent adjustment value (FS) of the same at least one adjustment variable (SG) for the subsequent product (FP), and - generating an adjustment signal (SS) for varying in a defined manner the at least one adjustment variable (SG) of the flat film machine (100) from the input adjustment value (ES) to the subsequent adjustment value (FS).

Description

technical field [0001] The invention relates to a method for changing the production of a flat film machine from an initial product to a subsequent product and to a changing device for carrying out such a method. Background technique [0002] It is known to use flat film machines to produce products in the form of flat films. Such flat film machines are usually equipped with nozzle arrangements capable of producing or discharging wide film webs. The nozzle arrangement can be supplied with a melt flow via one or more extrusion arrangements and thus spread over the entire outlet width. Typical widths of such nozzle arrangements are in the range of one meter to ten meters or even more. In addition, it is also possible to coat or laminate the melt. For example, one or more melt flat webs can be coextruded for this purpose. [0003] The known solutions have the disadvantage that high costs are required for switching between different products and that there is no reproducibil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/08B29C48/25B29C48/92B29C48/31B29C48/10
CPCB29C48/10B29C48/2692B29C48/92B29C2948/92133B29C2948/92152B29C2948/92209B29C2948/92628B29C2948/92647B29C2948/92704B29C2948/92942B29C48/08B29C48/31B29C2948/92447B29C2948/92904B29C2948/92409B29L2007/008G05B19/41845G05B2219/33125
Inventor 托尔斯滕·施米茨瓦尔德马·科勒尔贝恩德-亚历山大·格勒佩尔
Owner 温德默勒及霍乐沙两合公司
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