EP3616013A1 - Verfahren zur kontrolle einer folienproduktion - Google Patents
Verfahren zur kontrolle einer folienproduktionInfo
- Publication number
- EP3616013A1 EP3616013A1 EP18719537.5A EP18719537A EP3616013A1 EP 3616013 A1 EP3616013 A1 EP 3616013A1 EP 18719537 A EP18719537 A EP 18719537A EP 3616013 A1 EP3616013 A1 EP 3616013A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- process execution
- basis
- information
- film
- fingerprint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 256
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 91
- 239000011159 matrix material Substances 0.000 claims abstract description 107
- 238000011156 evaluation Methods 0.000 claims abstract description 68
- 238000012544 monitoring process Methods 0.000 claims abstract description 65
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 230000000977 initiatory effect Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 28
- 230000001276 controlling effect Effects 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 9
- 230000001419 dependent effect Effects 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000013442 quality metrics Methods 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 abstract 1
- 238000009472 formulation Methods 0.000 abstract 1
- 230000000875 corresponding effect Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 238000012800 visualization Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 238000000275 quality assurance Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920006302 stretch film Polymers 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012332 laboratory investigation Methods 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004393 prognosis Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32018—Adapt process as function of results of quality measuring until maximum quality
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32184—Compare time, quality, state of operators with threshold value
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32189—Compare between original solid model and measured manufactured object
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34457—Emit alarm signal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Definitions
- the present invention relates to a method for controlling a film production in which at least one film is produced as a function of at least one recipe information. Furthermore, the invention relates to a control system and to a computer program product.
- films are produced as a function of production information, the so-called recipe.
- This recipe is used for at least partial automatic parameterization of the film production by establishing various individual parameters, such. B. a material mixture or different process parameters for the film production machine.
- the film is, for example, produced by blow molding, and the film production machine is z. B. an extrusion machine or the like.
- monitoring of production parameters is carried out in the case of such film production machines, ie production is monitored on the basis of determined monitoring information. For example, a temperature monitoring or monitoring of the film thickness is provided. In particular, an operator of the film production machine manually influences the production on the basis of the monitoring information.
- a disadvantage of the known solutions for controlling the production of films is that the monitoring and quality assurance in production often turns out to be costly. In particular, the technical realization of the monitoring and quality assurance is difficult and costly. So it is common that the film is examined after the film production or after further processing, for example. By means of laboratory tests to check the quality of the film. If the film does not meet the quality requirements, the film must be replaced. This leads to an additional time and cost in film production and use.
- the film production should be simplified and implemented more cheaply.
- the object is achieved in particular by a method for controlling a film production, in particular blown film production, in which at least one film, in particular plastic film, preferably blown film, preferably stretch film, particularly preferably as an endless product, depending on at least one recipe information (recipe) is produced.
- a film production in particular blown film production
- at least one film in particular plastic film, preferably blown film, preferably stretch film, particularly preferably as an endless product, depending on at least one recipe information (recipe) is produced.
- the film production i. H. in particular at least one process execution of the film production, carried out such that based on the recipe information is a manual or at least partially automatic parameterization of the film production, in particular by a determination of various individual parameters, such.
- a material mixture or different process parameters for a film production machine such as an extruder.
- the steps according to the invention are carried out (at least in part) for further process executions so that finger prints are also determined for further process executions and / or the comparison of the respective fingerprints with the control matrix is carried out.
- the control matrix can be constantly adapted, so that an improved or optimized control is sought for further process executions.
- more than 10 or more than 100 or more than 1000 or more than 10000 process executions may be carried out in order, for example, to produce a film as an endless product or a plurality of films in accordance with the film production. It may be possible for the control matrix to be used for comparison by predicting film quality. Possibly.
- control matrix can be continually adapted (in the course of the process executions) in such a way that the comparison with the control matrix in the 1000th process execution enables a better prognosis than is the case with the 10th process execution.
- an optimization of the control matrix can take place during the course of the film production.
- a result information of this process execution such as a product property of the film produced
- the result information can then still on the basis of the produced film, for. B. on the basis of laboratory data and / or data from subsequent machines (further processing data), are determined.
- this can serve in particular to improve the subsequent control of subsequent further process executions, in particular by optimizing the control matrix.
- control means that monitoring and / or checking and / or evaluation and / or adaptation and / or Control and / or regulation of the film production, in particular the at least one process execution, preferably a film production machine used and / or of individual parameters occurs.
- This may, for example, also include a control, ie in particular monitoring and / or evaluation, of a result of the process execution, that is to say, for example, the produced film.
- the process execution ie in particular the individual parameters provided for the operation of at least one film production machine, such as an extruder, controlled, ie, for example, regulated and / or controlled.
- the control preferably comprises the adaptation based on a (measured) actual value of the individual parameters in comparison with a respective desired value for the individual parameters.
- framework conditions for the actual or desired values may be predetermined by the control matrix, for example by a tolerance value range of the control matrix, such as upper and lower limits for the values.
- the checking in particular the controlling and / or regulating and / or evaluating, can also refer to the consideration of this tolerance value range.
- the tolerance value range is compared with the actual and / or setpoint values which are used during process execution. This has the advantage that a quality of the process execution and / or the film produced thereby can be evaluated and / or ensured by comparing a fingerprint with the control matrix.
- the control matrix therefore represents an evaluation basis which specifies the framework conditions for achieving a desired quality of the film.
- control matrix may comprise at least one piece of information which serves to control, in particular to evaluate, the production of the film or the execution of the process.
- information is, for example, at least one tolerance value range, ie, for example, an upper and lower limit for values of the monitoring information and / or the recipe information of a fingerprint.
- the quality of the film is decisively influenced by the recipe information, which in particular includes specifications, for example target values, for individual parameters (as a so-called recipe for film production).
- the specifications may include at least one desired value for the individual parameters in order to carry out a corresponding control of the process execution (for example, by a control in the film production machine, such as a temperature control).
- the monitoring information can include, for example, measured actual values of the individual parameters of the process execution.
- the control matrix can be additional Defaults or control criteria include, for example, a tolerance value range in which the actual and / or desired values of the individual parameters should be located during process execution. Compliance with this tolerance range can be determined, for example, by comparing the control matrix with the fingerprint. In particular, if the tolerance value range is not adhered to, this may have a corresponding control, ie, for example, a negative assessment of the quality or an active countermeasure or regulation of the process execution or an adjustment of the recipe information to ensure quality result. The comparison and / or the control is possible, for example, based on the monitoring information, which, for example, are the result of monitoring the individual parameters in a process execution.
- the tolerance value range can be compared directly with the monitoring information, the monitoring information being provided, for example, by the fingerprint, in particular as digital data. This allows easy and immediate monitoring, evaluation and / or assurance of process execution quality.
- control matrix as a basis for evaluation allows a simple determination of evaluation criteria, which are provided by the information of the control matrix (such as a tolerance value range).
- evaluation criteria can be optimized, for example, by evaluating fingerprints during one or more film productions to achieve a desired quality.
- advantage can be achieved that a simple and flexible quality control is made possible by determining fingerprints and / or by comparing the fingerprints with the control matrix, which, for example, can also be computer-assisted and / or networked and / or automated.
- At least one control matrix is determined and / or adapted by performing an evaluation of fingerprints and / or result information of previous process executions, so that preferably an evaluation result is determined.
- the control matrix can then be determined on the basis of the evaluation result.
- the evaluation may include, for example, an analysis of different fingerprints and / or result information, in particular a statistical analysis. For this purpose, for example, an assignment of the fingerprints to associated Result information is carried out, which are specific to the respective fingerprints (ie, for example, that the respective result information was determined on the basis of a film which was produced by the process execution that characterizes the fingerprint).
- the evaluation may also include a determination of a correlation of different fingerprints and / or different result information with one another (autocorrelation).
- the evaluation also includes the use of complex (statistical) analyzes, such as linear prediction and / or trend analysis and / or pattern recognition and / or neural networks and / or artificial intelligence and / or the like.
- the fingerprint can also be stored digitally, optionally with further information (such as an associated control matrix and / or an identifier for the process execution, such as a time stamp or the like), preferably in an electronic data system (such as a database system).
- the fingerprint also includes the recipe information so that the individual parameters of the recipe information used in the associated process execution can also be accessed at a later time. For example. can, if the comparison of the fingerprint with the control matrix a particularly good approximation to a quality result is determined, the recipe information of the fingerprint marked accordingly and / or used for subsequent process executions.
- a multiplicity of fingerprints for a multiplicity of different process executions are stored in a data system and are preferably evaluated on the basis of respective result information.
- a correlation and / or a trend of the fingerprints with each other and / or in relation to the result information and / or further data is determined.
- the result information and / or the further data can come from different data sources.
- data in the further processing of the film (Further processing data) and / or the use of the produced film can be determined.
- the further processing includes, for example, the processing by a Wckler, especially if the film is designed as a stretch film.
- the data can be determined, for example, automatically and / or entered manually.
- the (active) process execution (in particular based on a comparison of the fingerprint of the process execution with the control matrix) are directly controlled and / or subsequent process executions can be controlled based on the evaluation.
- the process execution comprises an entire production or a production step or a sub-process of a production of a film.
- a film production machine for example as part of an extrusion system for producing a blown film, is controlled on the basis of the recipe information, ie, for example, controlled and / or regulated. It is possible that a change in the recipe information directly causes a change in the produced film, as this, for example, a material mixture is changed.
- the process execution can be unambiguously characterized by the fingerprint, and thus clearly differentiated from other process executions on the basis of the respective fingerprints. It may be possible to determine several fingerprints for several different process executions. For example. For each of the fingerprints the comparison with the control matrix can be made in order to continuously control the film production, for example to monitor and / or adapt the quality of the films produced thereby. Also, if necessary, an adaptation of the control matrix can be carried out in each of these comparisons, in particular in order to optimize the quality of film production. This adaptation takes place, for example, by evaluating a result of the respective process executions (in particular by result information, such as a product property of the film produced, preferably automatically). For example.
- the control matrix (automated) can be adapted in order to achieve a changed result in a subsequent process execution.
- This adjustment can be made such that an optimization of the control matrix to achieve the desired result takes place.
- This can be done, for example, by the iterative evaluation of the result information and adaptation as a function of this evaluation. It may also be possible for the evaluation to also include an evaluation of the recipe information and / or the adaptation also includes an adaptation of the recipe information.
- the recipe information can be optimized so that the desired result is achieved in a process execution based on the recipe information.
- the respective recipe information for the different process executions may be identical or different.
- a cross-recipe control of process executions is conceivable. Otherwise, only an internal recipe control is performed. For example.
- a recipe-comprehensive or an intra-recipe evaluation (a correlation or a trend) of the fingerprints can be provided.
- the detection of the monitoring information may be performed (in particular measurement) of individual parameters, in particular of properties of the material mixture and / or of process parameters and / or process variables in the process execution.
- the comparison of this monitoring information with the control matrix makes it possible to ensure the quality of the process execution.
- the quality of the process execution it is understood, for example, that at least one result information of the process execution is evaluated, for example a product property of the film produced thereby.
- this result information must fulfill certain criteria, for example, a predetermined tear strength of the film must be achieved or the like.
- the quality preferably refers to (product) properties of the film. These product properties can be determined, for example, to determine the result information directly during process execution (inline) or outside the process execution (offline). For example.
- the result information may include at least one quantitative information (eg, a measured property as a product property such as a degree of tear strength, a stress-strain curve, a film thickness, a basis weight, or the like) or at least qualitative information (e.g., user feedback whether damage has occurred to the film).
- the result information may also have an association with a position (ie position information). This allows, for example, a runmeter-dependent allocation of the product properties to positions of the film during film production.
- the position information also allows a conclusion on the fingerprint or on the values of the fingerprint, which were determined at the production of the film at a certain position. These values of the fingerprint are, for example, monitoring information.
- the tolerance value range of the control matrix can also be adapted on the basis of the result information, so that the control matrix is optimized.
- the monitoring information preferably comprises at least information about the individual parameters, and is determined, for example, by a detection (in particular measurement) of properties of the material mixture and / or process parameters and / or process variables in the process execution.
- the fingerprint may include, for example, both the monitoring information that was determined during a specific process execution, as well as the recipe information used in this process execution.
- the process execution can also be subsequently evaluated and / or analyzed on the basis of the fingerprint, and / or, if the result is very good, the associated process execution can be repeated in a similar manner in order to obtain the result (ie in particular the product properties of the film produced in this case). to reproduce.
- An analysis of different fingerprints can be carried out, for example, by comparing the fingerprints with the result information obtained in the respective process executions and / or with one another.
- an optimal fingerprint can be determined in order to achieve a specific result.
- the control matrix can also be determined and optimized on the basis of the analysis, in particular based on a correlation of a multiplicity of already determined fingerprints and / or associated result information, and so on Execute process executions such that a certain result is reproduced in sufficient approximation.
- the fingerprints for example, permanently (non-volatile) stored in a data system and provided.
- the result information may also include error information in order to determine an error cause by the analysis.
- the correlation may include, for example, autocorrelation (the fingerprints), so that a cause of a process execution error can be reliably identified.
- the result information may, for example, also include information about film production specific to a barking and / or an edge break and / or a biting level and / or a slack.
- the recipe information comprises at least information about at least one individual parameter for parameterization of the film production, in particular the process execution, preferably at least one film production machine.
- the individual parameter is, for example, a material mixture and / or a process parameter and / or a process variable, by means of which the process execution can be influenced in each case.
- a film production machine such as an extruder, can be set on the basis of the values specified by the recipe information of at least some of the individual parameters. Also affect at least some of the individual parameters, such as the material mixture, the composition of the film to be produced.
- the material mixture comprises, for example, at least one parameter of a raw material of the film (for example per layer of the film) or of a material of the film.
- the material mixture may also comprise at least one parameter of the layers of the film, such as, for example, a layer thickness and / or a layer sequence and / or a layer number.
- the material mixture may affect a mixing ratio per layer.
- the process parameter can comprise a controllable variable, such as a film speed and / or a frost line of the film and / or a pressure and / or a temperature during film production, such as a melt temperature and / or cooling air temperature and / or melt temperature, and / or a pressure during the film production.
- the process parameter has a "simple dependency", ie the process parameter specifies a desired value in order to adapt a determined actual value to the desired value in accordance with a control during process execution
- the process parameter specifies a desired value in order to adapt a determined actual value to the desired value in accordance with a control during process execution
- it is meant that it may not be possible to simply control the process variables in the sense of the process parameters, for example, the process variables being significantly influenced by a plurality of influencing factors determined, which require a more complex control and / or manual intervention in the process execution.
- the control matrix comprises at least one comparison criterion for values of the fingerprint, in particular for values of the monitoring information, wherein in particular the comparison of the fingerprint is based on the comparison criterion, so that based on the comparison result, the process execution in dependence on the comparison criterion controlled, preferably evaluated and / or adapted and / or visualized and / or controlled and / or regulated.
- the process execution and / or a subsequent process execution is adapted on the basis of the comparison result in order to improve the film quality.
- the comparison is made by determining a relation (relation information) of the values of the fingerprint for the comparison criterion.
- a comparison criterion can be provided by the control matrix to easily and reliably evaluate the quality of a process execution.
- the quality of the film produced can also be determined automatically and / or by means of data processing, without the need for costly investigations on the film.
- the monitoring information may be compared with the control matrix directly during the execution of the process and / or to be compared indirectly in that they are stored in the fingerprint, in which case the fingerprint is directly compared with the control matrix. It may also be possible for the information of the monitoring information and / or the control matrix and / or the comparison result to be visualized for an operator or user of the film production machine and / or the film, for example by color coding. Also, the visualization of the monitoring information in trend form and / or by the representation of a quality indicator (possibly also in trend form), especially during an active process execution.
- control matrix comprises a tolerance value range as a comparison criterion
- the comparison result is determined directly or indirectly by a relationship information, preferably distance information and / or fluctuation information and / or information on an over and / or undershooting
- at least one value from the fingerprint is determined for at least one limit, in particular the upper and / or lower limit, of the tolerance value range.
- This quality indicator can z.
- they may be used for (permanent) marking of the produced film or visualized during the process (i.e., process execution) for an operator of a film production machine. This allows easy and safe control of film production.
- the following step preferably after comparing the fingerprint, is carried out:
- Evaluation result is determined, wherein preferably the control matrix (M) comprises different comparison criteria for different individual parameters of the recipe information (R), for each of which at least one comparison result is determined, and preferably the comparison results are evaluated prioritized to assess the quality.
- M control matrix
- R recipe information
- the quality is correlated with a match of at least one determined (actual) product property of the film produced and a predetermined product property, the control matrix being specific for the given product property.
- the given product characteristic is a requirement for the requirements which the film (ie the product properties of the film) has to meet.
- the greater the quality the higher the quality. This allows a simple and fast control of the film production. It is also optionally possible for at least one of the following steps to be performed after the quality has been assessed:
- relevant individual parameters can thus be evaluated on the basis of the evaluation result and / or conclusions can be drawn on a position of the film during manufacture in which the quality meets the requirements.
- This also allows an optimal evaluation in order to improve the control matrix and / or the recipe information.
- a correlation of this information with a result information can also be determined, so that laboratory data, data from subsequent machines (further processing data) or the like can be taken into account for the evaluation.
- an automatic adaptation of the control matrix on the basis of the evaluation result, and possibly also on the basis of further comparison results and / or further evaluation results of further process executions and / or at least one product characteristic of the respective film produced in each case based on these comparison results.
- the runmeter-dependent storage thereby allows a simple and unambiguous assignment of the evaluation results to the relevant running meter area of the film in order to store the position for a weighted quality.
- the evaluation result can thus also serve to prove the quality of the film. It is also conceivable that the evaluation result is used as a decision aid, if intervention in the process execution must be intervened to ensure a certain quality.
- the alarm and / or warning condition and / or plausibility criteria for the plausibility check be predefined, the alarm and / or warning condition and / or the plausibility criteria z. B. be determined empirically. This makes it possible to easily and safely perform a film production. In particular, a defect of the film production machine can be reported by the warning, such as a defective sensor or the like.
- initiating the alarm / warning and / or performing the plausibility check and / or determining the quality prediction and / or determining the label and / or determining the degree of quality deviation may also be indirectly determined from the comparison result, e.g. B. on the basis of the evaluation result.
- comparison results may also be provided, for example for different individual parameters.
- the comparison results can, for example, be evaluated prioritized in that the comparison results are weighted differently, and thus enter into the quality prediction and / or evaluation with different weightings.
- an active control in particular a control and / or regulation
- the process execution as a function of the at least one comparison result preferably by a control (in particular control and / or regulation) of a film production machine, wherein preferably the control is carried out at least partially automated.
- the comparison results can also be evaluated prioritized for the control, for example, based on a predetermined weighting of the comparison results.
- the weighting may, for example, be predetermined by the recipe information and / or by the control matrix.
- the monitoring information may also include a running-meter position of the produced film, so that an association of the determined monitoring information with a film position is possible. This can then, for example. Also, a certain position range of the film are determined, for which a certain quality was determined by comparing the fingerprint with the control matrix.
- the monitoring information comprise at least one value sequence which is specific for at least one measurement result in the process execution, wherein preferably the measurement result is determined by a measurement in at least one film production machine, in particular at a specific position of the film.
- the position information indicates this position of the film. It may also be possible that in the process execution also several (spatially separated) film production machines are used, so that the process can also include several (temporally successive and / or spatially separated) sub-processes.
- the recipe information for different individual parameters of the process execution comprises at least one piece of information, in particular at least one of the following information: at least one piece of information for the material mix during process execution, in particular over layers of the sheet and / or over a raw material for at least one of the layers and / or over a thickness of at least one of the layers and / or via at least one layer sequence and / or number and / or via a mixing ratio of at least one of the layers, at least one information for at least one process parameter of the process execution, preferably via a film speed and / or a temperature and / or a pressure in the process execution, in particular in a film production machine, at least one information for a process variable of the process execution.
- the monitoring information may include values measured as specific values for the individual parameters, such as a temperature or film speed measured at the film production machine, or the like. These values can then be compared, for example. With the corresponding comparison criterion of the control matrix, such. B. with a specific tolerance value range. For example, if the values are within the tolerance value range, it may determine a positive single quality score. Otherwise, a negative single quality key figure can be determined (although here also several quality gradings for the single quality key figure are conceivable). This process can be repeated for different individual parameters. Subsequently, the single quality indicator can be determined as the overall quality indicator from the individual quality key figures in order to easily evaluate the process execution.
- the control matrix is determined taking into account a large number of preceding process executions and / or comparison results.
- the consideration can be done, for example, by a statistical analysis, such as a trend analysis, fingerprints and / or associated result information. This allows a Significant quality increase in film production.
- fingerprints and / or associated result information may be stored on the basis of the preceding process executions, in particular in a data system. For example. Therefore, certain previous result information can be reproduced, in particular by a (automatic) parametrization of a film production machine, such as an extruder, according to the fingerprint.
- control matrix in particular automatically, is adapted on the basis of the comparison result and / or at least one product property of the film produced by the process execution, so that the control matrix is optimized for a given product property.
- a processing device can be used for this purpose, which performs a corresponding automatic adaptation on the basis of the collected data (such as the fingerprints and / or the result information).
- the adaptation of the control matrix can take place self-learning, ie. h., result information of subsequent process executions can be automatically taken into account to adapt the control matrix, for example by a film production machine itself.
- the film production machine can adapt at least one tolerance value range (ie the corresponding limits) of the control matrix itself, in particular as a function of an evaluation of several fingerprints of previous process executions and / or depending on the result information.
- a running-meter-dependent optimization can also take place when the result information, for example, additionally comprises position information.
- certain values of the fingerprint and / or the monitoring information can be evaluated as particularly promising if, for these values (at this position), a particularly good quality of the film is determined on the basis of the result information.
- This process can be repeated for further process executions.
- this production limit can be defined more precisely / sharply.
- the result information which, for example, comprises at least information about at least one product property of the film
- result information such as further processing data and / or laboratory data
- a statement about the currently produced film quality of the active process execution can be made in the evaluation and / or the comparison.
- recipe information eg. By means of a Coding
- the evaluation of the correlation takes place cross-recipe for different process executions, by means of which a film is produced on the basis of different recipe information.
- a correlation of different recipes can be evaluated in order, for example, to determine relationships for specific individual parameters across all recipes.
- the evaluation of the correlation takes place only for process executions which use identical recipe information (internal to the recipe).
- the invention likewise relates to a control system for controlling a film production, in which a film can be produced on the basis of specific recipe information.
- the control system comprises in particular: at least one monitoring device, in particular a monitoring system, for determining monitoring information in at least one process execution for film production, at least one processing device for determining at least one fingerprint based on specific recipe information for the (respective) process execution and based on the determined monitoring information, so that the (respective) process execution can be characterized on the basis of the fingerprint.
- the processing device is designed to compare the fingerprint with a control matrix, so that at least one comparison result for controlling the film production on the basis of the control matrix can be determined as a basis for evaluation.
- the control system according to the invention brings the same advantages as have been described in detail with reference to a method according to the invention.
- the Kontra II system may be suitable to be operable in accordance with a method according to the invention.
- the monitoring device and / or the processing device can each be embodied as one or more or as a common computer and / or in each case an electronics and / or the like.
- the computer or the electronics can be integrated in a film production machine.
- an evaluation device in particular as at least one computer, which is in electrical and / or radio communication with the processing device in order to provide the control matrix for the processing device and / or the control matrix adjust according to the comparison result.
- the evaluation device may comprise a data system, in particular a database system, in order to provide and / or evaluate different fingerprints from different process executions, so that in particular the control matrix is determined.
- the invention likewise relates to a computer program product for controlling a film production, in which at least one film is produced as a function of at least one specific recipe information item. It is provided here that the computer program product is designed to be processed by a processing device, so that at least one of the following steps is carried out, in particular successively:
- the computer program product brings the same advantages as have been described in detail with reference to a method according to the invention and a control system according to the invention.
- the computer program product may be designed to be processed by the processing device (in particular a control system according to the invention), so that preferably a method according to the invention is carried out.
- the computer program product can be embodied, for example, as a data carrier and / or as a computer-readable storage medium and / or as a firmware and / or the like, which comprises a computer program for carrying out the steps.
- FIG. 4 shows an illustration of a control system according to the invention
- FIG. 5 shows a further illustration of a control system according to the invention for visualizing a method according to the invention.
- FIG. 1 schematically illustrates a method 100 according to the invention.
- a process execution 210 is performed.
- a film is produced in dependence on the recipe information R.
- the produced film has at least one product property D, which determines the quality of the film.
- the method 100 makes possible an improved control of the film production and / or film quality, wherein, in particular, evaluations of the (prospective) film quality and / or the product property D can be provided even without a laborious laboratory investigation. This can preferably take place already during the process execution 210 and / or in a timely manner after the process execution 210.
- This advantage is achieved, in particular, by determining a fingerprint F for a respective process execution 210 and comparing it with a control matrix M.
- control matrix M can be used as an evaluation basis in order to determine or predict the film quality on the basis of the fingerprint F without elaborate examinations of the film, in particular already at the time of production of the film (ie during the active process execution 210).
- the determination of the fingerprint F takes place on the basis of monitoring information I and a recipe information R of the associated process execution 210, so that this information can be used for the comparison with the control matrix M.
- control matrix M it may be provided that it is adapted by preceding process executions 210 and by the evaluation of associated fingerprints F and / or associated result information E.
- the fingerprints F and result information E can also be stored by a plurality of preceding process executions 210.
- This adapted control matrix M can then be used for a subsequent process execution 21 1.
- a plurality of fingerprints F and / or result information E from previous process executions 210 are stored in a data system 200 and analyzed, in particular by a determination of a correlation and / or by a trend analysis.
- To determine the result information E it is also possible to use laboratory examinations, manual entries or the like.
- the evaluation makes it possible to detect relationships between the fingerprint F and the result information E.
- FIG. 3 shows that the recipe information R can have information about various individual parameters, such as, for example, at least one material mixture A and / or at least one process parameter B and / or at least one process variable C. This information can at least partially be used for parameterization at least a film production machine can be used to produce a film according to the recipe information R in a process execution 210.
- FIG. 4 schematically shows a control system 10.
- the control system 10 may have at least one monitoring device 20 for determining monitoring information I in a process execution 210 for film production. Further, the control system 10 may include at least one processing device 30 for determining at least one fingerprint F on the basis of a specific recipe information R for the process execution 210 and on the basis of the determined monitoring information I, so that the process execution 210 can be characterized on the basis of the fingerprint F.
- an evaluation device 40 may be provided for the control system 10, which is in electrical and / or radio communication with the processing device 30 to provide a control matrix M for the processing device 30 and / or to adapt the control matrix M and / or a comparison of the Perform control matrix M with a fingerprint F.
- FIG. 5 illustrates a method 100 according to the invention with further details. It may be possible for a large number of process executions 210 to determine a multiplicity of monitoring information I. These can then each be provided with the recipe information R of the respective process execution 210 as a fingerprint F of this respective associated process execution 210 in a data system 200 of the control system 10.
- the data system 200 includes, for example, a provisioning unit 310.
- the data system 200 is preferably designed as a database system, eg. B. as a computer system with a database or as a software-based database system.
- the provisioning unit 310 may include an electronic component of the computer, such as a processor or data interface, or a software interface (such as SQL) or the like.
- a single fingerprint F thus comprises at least the specific recipe information R for an associated process execution 210 and also the monitoring information I of the associated process execution 210 so as to characterize the associated process execution 210.
- the result information E can additionally be determined, which, for example, include information about product properties D of the films produced. These can then be used for an evaluation (in particular by an evaluation unit 320, such as a computer or processor of a computer) in order to determine a correlation with the fingerprints F. In order to enable an assignment of the fingerprints F, which are each associated with a specific process execution 210 and characterize it, with those result information E, which for those in the corresponding
- the result information E may include, for example, an identifier, coding and / or position information or the like, which thus indicates the associated fingerprint F.
- a control matrix M determined ie in particular also an existing control matrix M adapted.
- Kontra II system 10 may compare at least one monitoring information I or a plurality of monitoring information I for different individual parameters with a desired value and / or with a tolerance value range of the control matrix M. Exceeding and / or falling below the tolerance value range or the setpoint value by the values of the monitoring information I for the respective individual parameters can, for example, indicate an insufficient quality of the film. Depending on the comparison, for example, a warning message can be output. It is also conceivable that a quality index is determined as a function of this comparison in order to permanently mark the film quality of the film produced in this process version 210.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Factory Administration (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102017108924.1A DE102017108924A1 (de) | 2017-04-26 | 2017-04-26 | Verfahren zur Kontrolle einer Folienproduktion |
PCT/EP2018/060189 WO2018197358A1 (de) | 2017-04-26 | 2018-04-20 | Verfahren zur kontrolle einer folienproduktion |
Publications (1)
Publication Number | Publication Date |
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EP3616013A1 true EP3616013A1 (de) | 2020-03-04 |
Family
ID=62044720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18719537.5A Pending EP3616013A1 (de) | 2017-04-26 | 2018-04-20 | Verfahren zur kontrolle einer folienproduktion |
Country Status (4)
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US (1) | US11660799B2 (de) |
EP (1) | EP3616013A1 (de) |
DE (1) | DE102017108924A1 (de) |
WO (1) | WO2018197358A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017108924A1 (de) | 2017-04-26 | 2018-10-31 | Windmöller & Hölscher Kg | Verfahren zur Kontrolle einer Folienproduktion |
DE102017116955B3 (de) * | 2017-07-26 | 2018-11-15 | Schlemmer Holding GmbH | Verfahren und Vorrichtung zur Fertigungskontrolle eines extrudierten Kunststoffprodukts sowie Extrusionsanlage zum Extrudieren eines derartigen Kunststoffprodukts |
DE102021112618A1 (de) * | 2021-05-14 | 2022-11-17 | Windmöller & Hölscher Kg | Verfahren zur Herstellung einer Kunststofffolie in einer Folienextrusionsmaschine aus einer Gesamtmenge an Rohstoffen sowie Computerprogrammprodukt zur Durchführung des Verfahrens |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10300375B4 (de) | 2003-01-06 | 2013-06-13 | Windmöller & Hölscher Kg | Verfahren zur Regelung der Dicke extrudierter Folie I |
US7121457B2 (en) * | 2004-04-30 | 2006-10-17 | Kimberly-Clark Worldwide, Inc. | Automatically adjusting parameters of a lifting device by identifying objects to be lifted |
DE102010029757A1 (de) | 2010-06-07 | 2011-12-08 | Battenfeld-Cincinnati Germany Gmbh | Kognitives technisches System zur Herstellung von Kunststofferzeugnissen |
DE102013100866B4 (de) | 2013-01-29 | 2016-03-31 | Windmöller & Hölscher Kg | Verfahren für die indirekte Bestimmung einer spezifischen Rezeptur bei einem Extrusionsverfahren sowie Extrusionsvorrichtung |
DE102017108924A1 (de) | 2017-04-26 | 2018-10-31 | Windmöller & Hölscher Kg | Verfahren zur Kontrolle einer Folienproduktion |
WO2020079568A1 (en) * | 2018-10-15 | 2020-04-23 | 3M Innovative Properties Company | Method and system for automatically controlling a slitter |
-
2017
- 2017-04-26 DE DE102017108924.1A patent/DE102017108924A1/de active Pending
-
2018
- 2018-04-20 WO PCT/EP2018/060189 patent/WO2018197358A1/de unknown
- 2018-04-20 EP EP18719537.5A patent/EP3616013A1/de active Pending
- 2018-04-20 US US16/608,840 patent/US11660799B2/en active Active
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US20200189167A1 (en) | 2020-06-18 |
US11660799B2 (en) | 2023-05-30 |
DE102017108924A1 (de) | 2018-10-31 |
WO2018197358A1 (de) | 2018-11-01 |
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