Method for determining model parameters of a production model of a film extrusion line

A method for automating a control or a regulation of a film extrusion line, comprising:

• detecting at least two model parameters which are:
• (a) input parameters of a production model for detecting a production situation of the film extrusion line, or
• (b) output parameters of the production model for detecting a film product situation of the film extrusion line,
• forming a parameter relationship between the at least two model parameters through the production model,
• determining, based on the parameter relationship, at least one further model parameter in a form of a non-detected input parameter or a non-detected output parameter of the production model,
• automating a control or a regulation of the film extrusion line using the at least one further model parameter,
• wherein the model parameters in the form of input parameters are at least one of the following:
• raw material parameters, recipe parameters, plant parameters, machine parameters, and film parameters.