Extrusion Pumps for polymer processing
The perfect choice for all applications. The demands on the pumps are just as high as in the case of textiles – particularly considering that the demand is growing for tailored solutions for ever more complicated processes. Our expertise also allows us to provide even the most complex applications with the perfect solution.
The GC, GE, and GE1M Series
Ever smaller product tolerances characterize development, i.e. for capacitor foils, packaging films, high-end monofilaments, drawn tapes, gas pipes, window profiles, etc. Our extrusion pumps optimize the polymer extrusion process, allowing for precise pressure build-up and metering of polymer in extrusion lines. The use of extrusion pumps is particularly advantageous wherever recycled materials are processed.
Extruders are relieved and are therefore subject to less wear-and-tear. Extrusion pumps offset the impact of various material viscosities. Barmag extrusion pumps are a reliable and durable solution for many extrusion systems within the plastics-processing industry as well as in polymer plants for throughput increase, metering and compensation of pressure fluctuations. Barmag offers a comprehensive extrusion pumps portfolio from a single source with capacities ranging between 4,7 and 12.800 cc/rev.
Applications
- Manmade Fibres
- Film Extrusion
- Sheet Extrusion
- Pipe Extrusion
- Profile Extrusion
- Compounding
- Granulation
- Recycling Lines
ADDITIONAL OPTIONS
- Pressure and temperature sensor in housing
- Flanges
- Mechanical support for pump
- Individually designed drive unit
- Terminal box
- ATEX Zone 2
- Sealing options for all 4 shafts
Technical data
- Viscosity up to 100.000 Pas
- Temperature up to 300 °C (up to 400 °C as special design option)
- Inlet pressure up to 100 bar
- Outlet pressure up to 350 bar (even higher for special design option)
- Capacities ranging between 4,7 and 12.800 cc/rev
Design options
- Housing/plates: Carbon steel, alloy steel, stainless steel or tool steel + wear protection coating
- Pinion shaft/pinion: Carbon, alloy or tool steel, ceramics + wear protection coating. Spur and helical gears
- Bearings: Carbon, alloy, stainless or tool steels, ceramics + wear protection coating
- Sealing: Thread sealing (cooled/uncooled), stuffing box, double mechanical seal, PolyVac
- Heating: Electrical (cartridge/heating plates), liquid
The Barmag advantage:
High volumetric efficiency: Our solutions ensure reduction of pressure fluctuations to as little as 1/10 of the original pressure fluctuations upstream of the gear metering pumps.
Improved performance: A gear metering pump is a common technology to decrease the discharge pressure from the extruder and therefore increasing the specific rate.
Increase of extrusion throughput: Without any risk being incurred because of fluctuations in the operational parameters. Therefore increasing productivity by up to 25%.
Up to 50% waste reduction as well as higher utilization of plant capacity: The start-up time until stable production or the changeover time to a different batch can be reduced. This time saving results from fast, reproducible settings and from the constant throughput with our gear metering pumps.
Reduction in material costs by up to 30%: A high proportion of recycled material can be processed which would otherwise result in reduced product quality because of viscosity fluctuations and inaccurate throughput in the extruder.
Low-shear production and therefore enhanced quality in the finished product: Polymer shear in the extruder can be reduced, and the extruder is subjected to far lower mechanical stresses than without a gear pump.
The special geometry of the melt inlet and outlet areas: This ensures both optimal filling of the gears while eliminating potential dead zones and also minimizing radial strain on the pinion shafts.
Gear teeth: The straight teeth with an optimized tooth- base ensure low-pulsation and low-wear operation as well as a high level of efficiency and hence lower power consumption (helical gear option available upon request).
The drive shaft seal: The polymer seal (reverse thread in the seal bushing) offers high accessibility and low maintenance costs. It is also available in a coolable design. Alternatively, a stuffing box seal is the preferred solution for low melt viscosities (other design options available upon request).
The steel quality: Using proven and tested special steel qualities considerably extends the service life of Barmag extrusion pumps.