Agricultural film extrusion lines are generally designed for three-layer production and, increasingly, also for five layers. Key applications are either thin mulching films (20-60 µm) or greenhouse films (150-250 µm), depending on the design of the production line. The most important difference between the various line concepts is the type of the haul-off unit used — reversing for thin films and stationary for thick films.

Because plastic film users are demanding more and more flexibility and efficiency, processing companies can take full advantage of their lines only if they are able to produce multi-web film of as wide layflat widths as possible. And this is why Reifenhäuser Kiefel is providing both their three- and five-layer agricultural film lines with reversing haul-off units in widths of 4,000 metres, capable of producing film of up to 13 metres circumference.

Today, the most different products can be produced on these lines, such as thin mulching films in thicknesses of up to 20 µm. However, the range also includes greenhouse film of up to 250 µm thickness, blown silage film and covering film.

In recent years, an additional application for these large production lines has developed. Container liners used to protect goods against impurities and humidity during transport are being produced to an increasing degree.