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Cast film lines: Modules
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| Schematic representation of a 3-layer cast film line |
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The extruder, with the cast film die-head, is the core of each cast film line. On the technological front, Reifenhäuser's
REIcofeed slider-adapter system for coextrusion of multi-layer composites and the automatic thermo bolt dies is state-of-the-art.
The REIcontrol automation system ensures continuous monitoring of all line functions and product parameters. Extra components for surface treatment, embossing units and gap stretching units round off the modular product program for cast film lines. |
1 Extruder, Reitorque, Reitruder
2 Forming section
The single and multi-channel sheet die-heads, with
1,600 - 5,500 mm nominal widths and throughput of up to 3,000 kg/h, cover all conventional requirements. Continuous development of the distributor geometries guarantees optimal tolerances, a broad operation spectrum and low pressure use.
Different
die control systems, various width adjustments and
channel geometries designed for coextrusion make it possible to meet the most diverse customer requirements. |
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Automatically controlled expansion bolt die for
cast films with a thickness of 20 to 200 µm |
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3 Casting section
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To ensure optimal film quality, Reifenhäuser implements a high cooling process and a very smooth-running casting roll. For the cooling process, specially developed chill rolls with exact temperature precision across the entire roll surface are used. These are available in diameters up to 1,000 m, depending on the application.
The drive technology with high angle precision makes highly sensitive traction control possible and thus contributes to improved product quality. |
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4 Winder
Reifenhäuser's extensive cast film program includes the automatic cast film winder series with rotary arm concept.
The advantages of the MIDEX rotary arm winder are especially noticeable in the manufacturing of CPP films. The two independent winding arms enable very short changing times and thus minimises the amount of production rejects.
The modular design makes the system adaptable to the individual needs of the customer. Mechanical speeds of up to 350 m/min (as pure contact winder for stretch films: up to 500 m/min) can be achieved, and depending on the product and the number of webs, reel diameters of up to 1000 mm are possible. |
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| MIDEX ® rotary arm winder |
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5 Automation
| Reifenhäuser implements the most modern bus systems such as Profibus and Industrial Ethernet and thus enables a decentralised structure and high line performance.
The process data and production parameters are recorded by means of a touch screen controller. |
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| © Reifenhäuser EXTRUSION GmbH & Co. KG / 2006 > About... |
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