The ERF 350 continuous melt filter, which enables around 30% higher throughput than the predecessor ERF 250, is being displayed by Ettlinger at Plast 2018 (hall 15, C32). The filters in Ettlinger’s ERF series are used by recyclers and compounders to filter heavily contaminated polyolefins and polystyrenes. All ERF filters are equipped with a conical screen, which is continuously cleaned by a scraper and maintains an absolutely constant pressure. Especially with sensitive applications like film, sheet and pipe extrusion or downstream strand or underwater pelletizing systems, this is a crucial advantage.

Apart from classic recycling of polyolefins in packaging of all kinds, Ettlinger filters have a unique capability for converting recycled automotive plastics, where paint particles have to be reliably removed from bumpers, for instance. Material flows with a high aluminum, rubber or silicone content, such as the polystyrene in yogurt pots, refrigerator scrap or ABS in electronic waste are other proven applications. Thanks to the ingenious discharge principle, Ettlinger filters have the lowest melt losses in the industry, no matter how challenging the environment. This, in turn, leads to extremely low operating costs and a very rapid return on investment.

Depending on the application, the screen can remain in use for several weeks, or possibly months, without having to change the filter. And when the time finally comes, this can be done by a single person in less than an hour. Furthermore, the filter screen can be cleaned several times in a pyrolysis furnace before eventually being replaced.

ERF melt filters are available in three different sizes and achieve a maximum throughput of 6000 kg/h.