Process-operated CDF melt filtration from MAS

The CDF melt fil­ter from MAS adapts to indi­vid­ual con­di­tions and reacts to the mate­r­i­al sup­plied from the extrud­er and its degree of con­t­a­m­i­na­tion. Unlike oth­er fil­ters, the CDF oper­ates con­tin­u­ous­ly and can be pre­cise­ly con­trolled to the required process point. The melt pres­sure (which is kept con­stant as a result) increas­es the qual­i­ty of the fil­tered mate­r­i­al, ensures less waste, and—thanks to var­i­ous screens and blades—impresses with low-main­te­nance dura­bil­i­ty.

All fac­tors in the process of melt fil­tra­tion can be adjust­ed at any time via the PLC, either man­u­al­ly or auto­mat­i­cal­ly with track­ing con­trol reg­u­la­tion. The fil­ter discs, made of high-qual­i­ty steel, offer a fil­tra­tion fine­ness of 90 μm to 1,000 μm and a large active fil­ter sur­face, ensur­ing high through­put even at par­tic­u­lar­ly low spe­cif­ic val­ues. The melt pres­sure also remains low, increas­ing the ser­vice life of the fil­ter discs. Depend­ing on the degree of con­t­a­m­i­na­tion, the tear-off pres­sure on the blades is increased or decreased to main­tain a con­stant melt pres­sure. Sim­i­lar­ly, the screw dis­charge speed adjusts to the degree of con­t­a­m­i­na­tion of the sup­plied mate­r­i­al. This can also be adjust­ed via the PLC. There are also dif­fer­ent screw geome­tries for dif­fer­ent types and lev­els of con­t­a­m­i­na­tion. The result: min­i­mized melt loss and excep­tion­al pro­duc­tion effi­cien­cy.

Thanks to this adapt­able, mate­r­i­al-friend­ly per­for­mance, the melt fil­tra­tion sys­tem can remove even heavy con­t­a­m­i­nants from poly­olefins that would clog the fil­ter holes in con­ven­tion­al melt fil­ters. This results in a high qual­i­ty of fil­tered mate­r­i­al.