Filtration

  1. Screenchangers
  2. Large Area Filtration
  3. Backflush
  4. Ettlinger systems

Filtration systems and screencangers for industrial applications

Filtration is a process that separates or purifies substances. The mechanical separation processes of Maag filtration systems are physical. The principles are used in filters and screen converters for separating and cleaning plastic melts, chemicals and lubricants. They are also used in recycling, extrusion, rotational molding, in general in industrial applications and in the pharmaceutical and food industries.


HSC

Manual screen changer and plate screen changer for filtration solutions and extrusion processes

Manual screen changers from MAAG have been the first choice of cost-effective filtration systems in extrusion lines for many years. Starting at size 45, the manual screen changers optionally come with transmission gearing.

Simple operation with quick screen change

High operational reliability

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

CE

SSC

Effective single piston screen changer for reliable melt cost effective filtration solution

The compact single-piston screen changers SSC from MAAG provide a cost-effective filtration alternative for extrusion applications which allow for interruptions in the melt stream during screen changeovers. SSC operate without any additional seal. 

Simple operation and uncomplicated screen changing

High operational reliability

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

CE

CSC

Continuous screen changer and double pistion screenchanger system for filtration - CSC

Continuous CSC screen changers from MAAG with their robust and leak-free operation meet highest quality standards with respect to melt filtration systems. Because of their constantly improved functionality, continuous screen changers from Maag increase product quality significantly. CSC screen changers

Simple operation and uncomplicated screen changing

High operational reliability

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

CE

DSC

Single piston screen changer for filtration systems and demanding extrusion process 

The discontinuously operating single piston screen changer, equipped with a screen cavity, offers a robust and economic alternative for extrusion and compounding applications which permit a brief interruption in the melt flow when changing the screen.

Simple operation and uncomplicated screen changing

High operational reliability

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

CE

FSC

Hydraulic screen changer for filtration systems and polymer production

FSC hydraulic screen changers from MAAG are equipped with a pressure-adaptive sealing system as a standard for filtration systems. Thanks to this sealing system, the required sealing forces are automatically adjusted by the screen changer to the actual melt pressure.

Simple operation and uncomplicated screen changing

High operational reliability

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

Short residence time

CE

CSC-C

Screen changer with candle filter elements

MAAG’s CSC-C large scale screen changer with candle filter elements is the right choice if short melt residence time, small footprint and a simplified candle change are required. 

Filter elements

Vertical / horizontal installation

2/4 pistons

Patented design
 

CE

CSC-R

A Double pistion screenchanger for flitration systems

Large-area screen changers from MAAG are based on the sturdy and proven double-piston screen changer design. The patent-registered curved screen plate provides four times more active screen area than a conventional screen changer with circular screen cavities. The highly compact

Up to 4x more filter area than circular screen cavities

Higher throughput

Multiplied screen life time

Smaller hydraulic unit

Lower melt pressure

Higher filtration fineness

Reduced flux rate kg/h/cm2

Ultra-compact design

Less heating capacity

CE

CSC/BF-4F

Automtic self cleaning screen changer for polymer extrusion industry and filtration systems 

MAAG backflush automatic self cleaning screen changers are based on the proven double-piston design which operates without any mechanical seals. The screen changers are equipped with four screen cavities. This design is used mainly in recycling applications for filtration systems.

Multiple screen usage

Simple operation and uncomplicated control

High operational reliaility

Short material residence time

Leak-free mode of operation

Low pressure consumption

Flow channel geometry without any dead spots

CE

FSC-OEM

Optimized flat screen changer for processing of plastics

The flow optimized new version of MAAG´s FSC hydraulic and manual screen changers assist operators of plastic extrusion lines in achieving a reduced equipment footprint, reduced residence time and improved residence time distribution. 

Reduction of pressure loss

Optimized flow

Increased production speed

Energy efficiency

Elimination of pressure fluctuations

Reduction of material consumption

Easy maintenance

CE

High Performance Melt Filter ECO

The continuous melt filters of the ECO series are mainly employed in PET and PA applications due to their special design and for filtering polymer feedstock from industrial waste with a low level of contamination or lightly contaminated post-consumer waste, as well as for clean virgin material. Our ECO melt filters are capable of processing a wide range of polymers. All solid or elastomer foreign particles such as gels, black specs, paper, wood, aluminum, copper, rubber, silicone or high-melting polymer composites are efficiently removed.

Continuous operation with a constant pressure on the outlet side

No need to replace the screen for several weeks, or possibly months, depending on the material and the applicationExtremely low melt losses

Absolutely clean filtration surface during the total time in operation

Up to 1.5% contaminants removed (we recommend our ERF filter for higher contaminant contents)

Completely closed system with no entrapped air

Short contaminant residence times in the filter

Consistent melt flow without dead zones or degraded polymer

Suitable for all polyolefins, polystyrenes, PET and PA

Better mixing and homogenizing of highly filled melts

CE

High Performance Melt Filter ERF

The continuous melt filters in the ERF series are suitable for materials with up to 16% by weight contamination and are guaranteed to remain in use for long periods without changing the filter. Our ERF melt filters are capable of processing a wide range of polymers (e.g. LDPE, LLDPE, HDPE, PP, PS, ABS, PC / ABS, TPE, TPU, POM). All solid or elastomer foreign particles such as paper,wood, aluminum, copper, rubber, silicone, or high-melting polymer composites are efficiently removed.

Fully automatic, continuous operation

Up to 18% contaminants removed

Extremely low melt losses

More reliable processing due to constant pressure at the filter outlet

No need to replace the screen for several weeks, or possibly months, depending on the material and the application

Completely closed system with no entrapped air

Short contaminant residence times in the filter

Very simple replacement of the scraper from outside using a hydraulic cylinder

Elastomers (rubber, silicone) are efficiently filtered and discharged before they have a chance to be forced through the filter screen

CE

simplex

Discountinuous large area polymer filtration applications for industry and extrusion

MAAG-designed simplex polymer filter systems can be provided with either fixed or removable vessels. A compact preheat station with spare vessel is also available for locating near the polymer processing line for quick changeout. They are custom designed to minimize

Lower cost

Easier operation

No diverter valves

Less space requirements

Minimized pressure drop

Horizontal or vertical design

CE