Filtration systems and screen changers for industrial applications
Filtration is a process that separates or cleans substances. The mechanical separation processes of MAAG filtration systems are physical. The principles are applied in filters and screen changers for separation and cleaning of plastic melts, chemical substances, and lubricants. They are also used in recycling, extrusion, rotomolding, in general industrial applications, and in the pharmaceutical and food industries.
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 /… [...]
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… [...]
MAAG’s CSC-R large scale screen changer with curved screens is designed for the use of one-way filter screens which do not require cleaning after the simple and safe screen change. The screen bearing pistons belong to MAAG’s modular filter system and its patented design use 75% of the piston surface as active filtration area. Also… [...]
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. Depending on the polymer type, melt viscosity, reactor throughput, and filter fineness, the screen changer size and number of pistons are customized to the application. The patented… [...]
Continuous CSC screen changers from MAAG with their robust and leak-free operation meet highest quality standards with respect to melt filtration. Due to their constantly improved functionality continuous screen changers from MAAG increase product quality significantly. CSC screen changers are based on the proven double-piston design that operates without any additional seals. Their sturdy construction… [...]
Discontinuous DSC screen changers from MAAG with their robust and leak-free operation meet highest quality standards with respect to melt filtration. Due to their constantly improved functionality continuous screen changers from Maag increase product quality significantly. DSC screen changers are based on the proven single-piston design that operates without any additional seals. Their sturdy construction… [...]
MAAG’s duplex polymer filtration system was designed with considerable input from our customers. The result is a patented polymer filter system that offers process benefits such as minimized residence time and improved heat transfer efficiency. The combination of our modeling expertise and the technical edge of our patented slide valve design for polymer production with… [...]
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 initial pressure drop and maximize polymer filter element life. Our proprietary sizing program, based on… [...]
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. Here, the breaker plate is equipped with patented gearing and a pinion which allows an effortless screen change even in restricted space… [...]
FSC screen changers from Maag are equipped with a pressure-adaptive sealing system as a standard. Thanks to this sealing system, the required sealing forces are adjusted to the actual melt pressure automatically. The narrow design is especially suited for being used in applications with thermally sensitive materials. Their solid and robust construction, available in all… [...]
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. The ultra compact design is maintenance friendly, and provides precise flow even at high discharge pressures. The ultra short flow channels reduce… [...]
contineo is MAAG´s cutting edge high performance filter for extrusion applications. Thanks to it´s continuously self-cleaning process it is most suitable for the production of film and profiles. The filter can handle contamination levels of < 1%. The effective self-cleaning function allows to keep the pressure constant for a long period of time. contineo is… [...]
MAAG backflush screen changers are based on the proven double-piston design which operates without any mechanical seals and is equipped with four screen cavities. This design is used mainly in recycling applications. Due to its fully automatic backflush function screen service life is maximized and the level of automation of the entire system is increased.… [...]
The right filtration system for every need
Thanks to its wide range of filter systems and screen changers, MAAG covers a wide range of basic filtration performance requirements. The decisive factor in choosing the best system is to answer the critical questions in advance. These include:
What filtration capacity is required? Will the screens or filters be backflushed during operation? What types, quantities and sizes of standard contaminants will normally be encountered? What is the target throughput rate? …
Questions regarding the filters, filtration systems and screen changers will of course be adapted to the individual situation of each plant by MAAG’s experts based on their many years of experience. The fact is that polymer production requires wide-ranging types of filters and screen changers in order to produce the highest quality plastic.
Whether standard or custom-made, MAAG has filter systems in its portfolio that meet the increasingly specific requirements in terms of product quality, productivity, handling and maintenance. Integrated and customized solutions for the filtration of plastic melts in the manufacturing process are the goal. The range covers numerous applications such as polymers, thermoplastics, PVC, compounding, masterbatches, micropellets, recycling, as well as food polymers.
Dust particles from the environment, metal fragments detached from the machines, material waste from previous processing steps, and other factors, can damage the process for the production and high-quality processing of polymers. Such contaminants interrupt production, and degrade the quality of the end product, impairing its value and marketability. This applies equally to small and very large plants that process polymers of all kinds.
Filtration systems and screen changers prevent contamination by separating the contaminants from the polymers without interrupting the production process.
MAAG’s various filter and screen changer solutions for plastics production are aimed at significantly reducing the damage caused by contaminated materials in production.
Screen changers from MAAG
MAAG screen changers fulfill many requirements of the polymer industry. There are manual and automatic screen changers, automatic continuous and automatic self-cleaning screen changers. The portfolio also includes double-piston screen changers, single-piston screen changers, and numerous filter elements for melt filtration and hot polymer filtration. It also includes screen changers for melt pumps and slide plate screen changers.
Continuous screen changers
Continuously operating single-piston screen changers in all sizes and variants ensure reliable, leakage-free filtration of polymer melts thanks to their robust design. Depending on the model, the rheologically optimized flow channel guides the melt stream optimally into the screen cavity, with a short dwell time.
Slide plate screen changers
MAAG slide plate screen changers can be used for a wide variety of extrusion tasks. Many are equipped with pressure-adaptive sealing systems as standard.
Manual screen changers
Manually operated screen changers are the first choice when it comes to cost-effective filtration on extrusion lines. They additionally protect the melt pump from damage and contamination.
Double-piston screen changers
CSC double-piston screen changers are robust, enable leakage-free operation, and meet the highest quality demands in melt filtration. The design of the tried and proven MAAG double-piston screen changers means no additional seals are required. In some cases, arched screens are used to significantly increase the active screen area. There are also models with fully automatic backflush functionality to minimize downtimes and increase the automation of the plant.
Large-area filtration from MAAG
With large-area screen changers ,even larger areas can be realized in filtration. MAAG additionally offers high-quality, high-performance filter elements and candle filter elements which enable very long service lives.
Large-area screen changers
These special screen changers are based on the double piston design, do not require additional seals, and are equipped with application-specific filter elements. Ideal for large-area filtration – optionally with basket filters, arched screens, disk filters or cartridge filters.
A discontinuous large-area filter system can also be configured according to individual customer requirements. There is also a continuous large-area polymer filtration system that minimizes viscosity losses in the switching process and allows seamless conveying.
The various MAAG filter elements can be cleaned multiple times, and have a long service life. The design is adapted to the special requirements of the filtration process.