The AP screen changer delivers continuous, self-cleaning melt filtration — with minimal pressure disturbance — without stopping your extrusion line. Designed for virgin polymer and clean regrind, also with low recycled content, across film, sheet, fiber, and coating applications.
Continuous Filtration Without Compromise
AP filter cartridges are cleaned without being removed from the block. The cleaning cycle is activated by the operator with a key, without stopping the line. The cleaning cycle causes minimal pressure disturbance.
AP filtering cartridges can be cleaned and replaced without production interruption. The extrusion line runs throughout — no restart cycles, no pressure spikes, no scrap at changeover. Filtration fineness is maintained down to 3 μm continuously.
AP does not require any expensive control panel or hydraulic control units — unlike many competing continuous screen changer designs. The self-cleaning mechanism is integrated and mechanically simple, reducing installation cost and maintenance complexity.
AP is optimized for virgin polymer and clean regrind, also with low recycled content, in film, sheet, fiber and most continuous applications where melt quality and uptime are critical.
BOPP Film
Cast Film
Blown Film
Fiber Production
Nonwoven
Nylon
Tapes
Cellulose
Blow Moulding
Sheet Extrusion
Wire & Cable
Pipes
Extrusion Coating
Stretch Film
For application-specific filtration guides: Blown Film Filtration · Sheet Extrusion Filtration
| Parameter | Specification | Notes |
|---|---|---|
| Filtration type | Continuous, self-cleaning | Ensures uninterrupted operation and in-line contaminant removal |
| Cartridge system | Dual parallel cartridges | Parallel configuration allows continuous filtration during screen change |
| Filtration fineness | Down to 3 μm | Maintained continuously — no interruption during the cleaning cycle |
| Cleaning cycle activation | By the operator, with a key | The operator activates the cleaning cycle with a key; the line keeps running during cleaning |
| Material compatibility | Virgin polymer and clean regrind | Clean or semi-clean applications, also with low recycled content |
| Max operating temperature | Up to 350°C | Designed for high-temperature polymer processing |
| Max operating pressure | Above 500 bar | Suitable for high-pressure extrusion applications |
| Throughput range | 5 – 2,000 kg/h | Wide operating range depending on configuration and material |
| Hydraulic control unit | Not required | Self-cleaning mechanism integrated in the filter housing, no external hydraulic unit |
| Screen change | Without production interruption | Continuous operation with no downtime during screen replacement |
Watch an AP 3D animation: the filtering unit, valves and gaskets, inside AP body, self-cleaning operation
AP set-up: watch how to perform valve adjustment.
Watch how to execute AP gasket replacement.
To clean the AP, the operator uses a key to actuate the flow valves: the resulting backflush of melt removes the accumulated contaminants from the cartridge screen, while the cartridge remains inside the filter housing and melt continues flowing. During the cleaning cycle, melt continues flowing through the parallel cartridge with minimal pressure disturbance. No screen is removed and the line keeps running.
The AP screen changer achieves filtration fineness down to 3 μm — maintained continuously without line interruption. This covers film, sheet, fiber spinning and coating applications, from standard to high-clarity requirements. For mesh-to-micron conversions, see the Mesh-to-Micron Converter.
No. Unlike many continuous screen changer designs that require hydraulic actuators and a dedicated control panel, the AP operates without any external hydraulic control unit. The self-cleaning mechanism is integrated within the filter housing. This reduces installation cost, eliminates hydraulic maintenance overhead, and simplifies line layout — particularly relevant for retrofitting an existing line.
The AP screen changer is suitable for a wide range of thermoplastic polymers: polyolefins (LDPE, LLDPE, HDPE, PP), engineering polymers (PET, PA, PC, PMMA, ABS), elastomers, biopolymers, and specialty compounds. Designed for virgin polymer, clean regrind and low recycled content. Operating temperature range up to 350°C.
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