Our polymer processing team leverages more than 200 years of collective corporate experience in the plastics industry to produce a full range of precision melt stream products — from screws and barrels to filtration systems, pumps, and valves for extrusion and injection molding — to the dies used to create film, sheet, coatings and pelletizing systems to meet the constantly evolving needs of the polymer industry.
BKG gear pumps types GPE / GPX are used in extrusion, compounding and polymerization processes.
The line of BKG gear pumps can help optimize your process so that your extrusion line achieves the highest possible quality and throughput. BKG gear pumps have completely flow-optimized inlet and outlet sections and guarantee an extremely gentle treatment of the material. Threaded temperature and pressure sensors fit into the pump without edges by design, a sophisticated manufacturing technique which is characteristic of BKG gear pumps.
The polymer diverter valve consists of a heated housing and a hydraulically movable piston. By hydraulic actuation of the piston, the melt flow can be diverted towards the floor or directed towards the die plate.
The diversion is necessary because the desired optimal melt flow per die plate hole cannot be generated instantaneously by the preceding equipment (e.g. extruder) at start-up.
The polymer diverter valve also separates the pelletizing process from the preceding process (e.g. extruder) so that both can be shut down separately in case of minor faults or changes made at the pelletizer.
The BKG shut-off valve interrupts the melt flow in the system. It is suitable for multiple layer film lines and reactor processes.
It enables a controlled start-up / shut-off of the melt flow (maintenance, interruptions, etc.).
Normal operation:
2 screen cavities (100%) in the process
Backflush:
Not possible
Screen change:
1 screen cavity (50%) in the process
Normal operation:
1 screen cavity (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change, a screen cavity is not in position to continue operating the machine
The D-SWE is suitable for all polyolefins and a variety of other temperature stable polymers. This system can be used for protection filtration, batch processes, compounding, semi-finished production, fibers, polymerization, and masterbatches, as well as for quality filtration of virgin materials.
Recycling filter for highly contaminated applications
Principle:
Separation in a continuous filtration process
Use:
Medium to highly contaminated plastic melt polymers from the family of olefins and styrenes
Applications:
Recycling
The contaminated melt flows through the fixed, cylindrical strainer tube from the inside out. The micro-conical holes provide efficient filtration of contaminated melt. The contaminants are separated from the melt and then scraped by a rotating blade shaft from the surface of the strainer tube. The cooled discharge screw removes the collected contaminants from the machine out. The speed of the blade shaft/discharge screw can be adjusted depending on the throughput, contaminat level and discharge rate, thus ensuring a continuous working process with a clean, open filtration area with low melt loss.
Normal operation:
4 screen cavities (100%) in the process
Backflushing:
3 screen cavities (75%) in the process, 1 screen cavity (25%) in backflush position
Screen change:
3 screen cavities (75%) in the process, 1 screen cavity (25%) in change position
Reservoir filling:
4 screen cavities (100%) in the process
The BKG HiCon V-Type 3G is suitable for almost all processes and materials. It is used in processes with a high demand for pressure consistency (e.g. strap, film, fiber) as well as in processes with insufficient back pressure for backflushing (e.g. strand pelletizing). It is also suited for processes with a high proportion of contaminates (e.g. recycling). The system enables a continuous operation without any system shutdowns during screen change.
Normal operation:
1 screen cavity (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change, a screen cavity is not in position to continue operating the machine
The HS-Y is suitable for all polyolefins and a variety of other temperature stable polymers. This system can be used for protection filtration, batch processes, compounding, and masterbatches, as well as for quality filtration of virgin materials.
Normal operation:
2 screen cavities (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change one of the screen cavities (50%) is removed from the process, allowing for one of the screen cavities (50%) to remain in operation
The BKG K-SWE is suitable for almost all processes and materials. It can be used for polymerization, compounding, film, pipe, sheet and pelletizing processes. It enables process runs to continue without any system shutdowns while changing the screen.
Normal operation:
2 screen cavities (100%) in the process
Backflush:
1 screen cavity (50%) in the process
Screen change:
During a screen change one of the screen cavities (50%) is removed from the process, allowing for one of the screen cavities (50%) to remain in operation
Normal operation:
4 screen cavities (100%) in the process
Backflush:
3 screen cavities (75%) in the process
Screen change:
During a screen change two of the screen cavities (50%) are removed from the process, allowing for two of the screen cavities (50%) to remain in operation
The K-SWE-4K/RS is suitable for almost all processes and materials. It can be used in compounding, film, pipe, sheet, and pelletizing applications. It can manage processes with a high proportion of contaminates (recycle) and enables process runs to continue without any system shutdowns while changing the screen.
Normal operation:
2 screen cavities (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change two of the screen cavities (50%) are removed from the process, allowing for two of the screen cavities (50%) to remain in operation
The BKG® K-SWE is suitable for almost all processes and materials. It can be used for polymerization, compounding, film, pipe, sheet and pelletizing processes. It enables process runs to continue without any system shutdowns while changing the screen.
Normal operation:
4 screen cavities (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change one of the screen cavities (25%) is removed from the process, allowing for three of the screen cavities (75%) to remain in operation
Normal operation:
4 screen cavities (100%) in the process
Backflush:
3 screen cavities (75%) in the process
Screen change:
During a screen change one of the screen cavities (25%) is removed from the process, allowing for three of the screen cavities (75%) to remain in operation
The K-SWE-4K-75/RS is suitable for almost all processes and materials. It is used in pressure constant processes (e.g., strap, film, fiber, strand pelletizing, etc.). It can manage processes with a high proportion of dirt (recycle) and enables process runs to continue without any system shutdowns while changing the screen.
Normal operation:
1 screen cavity (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change, a screen cavity is not in position to continue operating the machine
The LD-SWE is suitable for all polyolefins and a variety of other temperature stable polymers. This system can be used for protection filtration, batch processes, compounding, semi-finished production, fibers, polymerization, reclaim and masterbatches, as well as for quality filtration of virgin materials.
Normal operation:
2 screen cavities (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change one of the screen cavities (50%) is removed from the process, allowing for one of the screen cavities (50%) to remain in operation
The LK-SWE is suitable for almost all processes and materials. They can be used for polymerization, compounding, film, pipe, sheet and pelletizing processes. More specifically, all polyolefins and a variety of other temperature stable polymers (e.g. ABS, PS, SAN) and preferably for systems operating at higher throughput rates. The LK-SWE enables process runs to continue without any system shutdowns while changing a screen.
Normal operation:
8 screen cavities (100%) in the process
Backflush:
Not applicable
Screen change:
During a screen change two of the screen cavities (25%) are removed from the process, allowing for six of the screen cavities (75%) to remain in operation
Normal operation:
Complete filter area (100%) in the process
Backflush:
Not applicable
Screen change:
During downtime
The BKG® Tubefilter is suitable for almost all processes and materials. It can be used for deep and fine filtration in optical applications (e.g. BOPP, BOPET, etc.) and continuous operation is possible by using two units in parallel with additional switching valves.
Normal operation:
4 screen cavities (100%) in the process
Backflush:
3 screen cavities (75%) in the process
Screen change:
During a screen change one of the screen cavities (25%) is removed from the process, allowing for three of the screen cavities (75%) to remain in operation
The BKG® V-Type with patented power backflush technology is suitable for almost all processes and materials. It is used in pressure constant processes (e.g., strap, film, fiber, pelletizing, etc.) as well as processes with insufficient back pressure for backflushing (e.g., strand pelletizing, etc.) and can manage processes with a high proportion of contaminates (recycle). The system enables process runs to continue without any system shutdowns while changing the screen.