Control method for controlling at least a part of a production process of a film extrusion line

A computer program product comprising instructions stored on a non-transitory computer-readable medium which, when executed by a processor, cause the processor to:

• acquire a first film parameter or stability parameter of a film produced by a film extrusion line;
• determine a difference value between the acquired first film parameter or stability parameter and a correlating set point;
• form a parameter relationship between the determined difference value and at least one input or output parameter of the film extrusion line using a production model;
• automatically generate a control value for adjusting the input or output parameter based on the formed parameter relationship;
• automatically adjust the input or output parameter of the film extrusion line according to the generated control value;
• instruct a production of a film using the film extrusion line with the adjusted input or output parameter.

A control method for controlling at least part of a production process of a film extrusion line by means of a production model, comprising:

• acquiring a first film parameter or stability parameter of a film produced by the film extrusion line before a start of a production process;
• determining a difference value between the acquired first film parameter or stability parameter and a correlating set point before a start of the production process;
• forming a parameter relationship between the determined difference value and at least one input or output parameter of the film extrusion line using the production model before the start of the production process;
• automatically generating a control value for adjusting the input or output parameter based on the formed parameter relationship before the start of the production process;
• automatically adjusting the input or output parameter of the film extrusion line according to the generated control value to form a start configuration;
• and
• instructing a production of a film using the film extrusion line with the adjusted input or output parameter.

A control method for controlling at least part of a production process of a film extrusion line by means of a production model, comprising the following steps:

• acquiring for acquisition of a film product situation at least one model parameter in form of an output parameter of the production model,
• determining a difference value between the at least one acquired output parameter of the production model and a correlating set point,
• forming a parameter relationship between the determined difference value and at least one model parameter in form of an input parameter of the production model,
• generating at least one control value as a default for the at least one input parameter of the production model of the formed parameter relationship,
• wherein the steps of acquiring, determining, forming and generating are carried out at least partially, before start of a production process of the film extrusion line for forming a start configuration of the at least one input parameter.