ESC-BF Maag’s new high-performance melt filter is targeted at the extrusion of film that incorporates recycled resin. The compact, backflush filter is equipped with a conical screen through which the melt flows from the inside to the outside. Its flushing piston moves axially to continuously clean the entire screen segment by segment, removing gels, dirt and other impurities. All parameters, including backflush volume and flushing piston movement, can be precisely adjusted with the control system and adapted to the process. The melt filter comes in two sizes: the ESC-BF 500, which has a filter surface of 77.5 square inches; and the ESC-BF 1000, with a filter surface of 155 square inches.
What’s new? The melt filter, which debuted at K 2019.
Benefits Improved performance. The efficient, uniform backflushing of the entire screen ensures that the system’s pressure remains consistent for long periods of time. This makes it possible to use recycled resin and edge trimmings in the highly sensitive blown film process. Additionally, the melt filter is compact in comparison to melt filters with screen disks and has about four times as much filter area for the same installation space. This has a positive effect on pressure losses, flow speeds and shear rates.
Maag Automatik Inc., Charlotte, N.C., 704-716-9000, www.maag.com
