WindmÖller & HÖlscher Kg

Windmoeller & Hoelscher Kg

Tobias Kulgemeyer

Martin Backmann

Ansgar Avermeyer

Markus Bussmann

Jens Minnerup

Karsten Golubski

Gerhard Middelberg

Tim Kirchhoff

Ulrich Krause

Jens Althermeler

The invention describes a process for starting up a film production in a film manufacturing machine, in particular a blown film machine, by means of a control device, comprising the following steps:

Method for starting or terminating production of a film in a film manufacturing machine, film manufacturing machine and computer program product

The present invention relates to a method for changing material in an extrusion device comprising at least two supply devices for supplying feedstock for an extruder, comprising the following steps:

Method for changing the material in an extrusion device

An extrusion device that produces plastic film includes at least two feed units that feed feedstock for an extruder, wherein, in each feed unit an automatic cleaning device is arranged for a removal of feedstock from the feed unit when changing material in the extrusion device.

Extrusion device and extrusion method that produces a plastic film

The present invention relates to a method for the step-by-step guidance of a machine operator of an extrusion device for a film machine when changing from an application formula to a subsequent formula, comprising the following steps:

Method for the step-by-step guidance of a machine operator of an extrusion device when changing from an application formula to a subsequent formula

The above object is solved by means of a method comprising the features as described herein as well as an extrusion device comprising the features as described herein. Further features and details of the invention follow from the depending claims, the description and the drawings. It goes without saying that features and details, which are described in connection with the method according to the invention, shall thereby also apply in connection with the extrusion device according to the invention and in each case vice versa, so that, with regard to the disclosure, reference is or can always be mutually made, respectively, to the individual invention aspects.

Method for preparing for a change of material in an extrusion device for a film machine

A method changes the material from a feed mixture to a subsequent mixture in a feed device of an extruder, the method comprising the steps of detecting a change request for changing the material, emptying a mixing area of a mixing device of the feed device, identifying the completion of the emptying of the mixing area, and filling the mixing area of the mixing device with the subsequent mixture after the completion of the emptying has been identified.

Method for performing a material change in a feeding device of an extruder

An extrusion device that produces plastic film includes at least two feed units that feed feedstock to an extruder, wherein each feed unit has at least one discharge opening including a discharge closure to open and close the discharge opening, and a container interface that reversibly fastens a discharge container that accommodates feedstock discharged from the respective feed unit.

The invention relates to a method for the changing of material from a starting material to a subsequent material with an extrusion device () for the production of extrusion products () comprising the following steps:

Method for changing a material and corresponding extrusion device

A method for setting the sizes of film tubes extruded by blown film plants includes changing the film tube size from an initial size to a final size, and optimizing the location of a frost area during the size change by setting the output of a cooling fan. Physical parameters of the initial and final size of the film tube are stored in a control device. The control device takes these physical parameters into account when generating control signals. The control signals form the basis for the control of the cooling fan output.

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Hagen a. T.W., Germany

Tobias Kulgemeyer