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: Counter Rotating Non-Intermeshing Twin
Screw Extruder : Plastics
Recycling |
Even though the plastics
recycling market is relatively new, NFM/Welding
Engineers has a half century of experience
in the reprocessing of plastics, including
contaminated, mixed materials. As a leading
manufacturer of non-intermeshing twin screw
extruders and continuous melt filtration
systems, we are uniquely qualified to support
your recycling efforts and add value to post-consumer
plastics and rubber. We have ongoing developmental
programs with government and university groups,
which can provide numerous resources toward
developing an optimized turn-key system.
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Advantages
to
Processors & Recovery Facilities
Flexibility in Processing:
NFM/Welding Engineers can tailor a recycling
system to
precisely meet your needs.
Available equipment includes:
• twin screw compounding extruders
• one and two feed opening models
• featuring an odor and moisture
removal vacuum vent stage
• crammer feeders for low bulk density
feeds
• Kleen Screen melt filters for mildly
contaminated
plastics (particle size less than 1 mm)
• other filtering devices, such as slidegates
and
intermittent back washing purgers for
more contaminated plastics
• auxiliary equipment, such as solid
and liquid
feeders, vacuum pumps, and pelletizers.
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Additional
flexibility is made possible by:
• modular screws and barrels
• variations in screw design and operating conditions that provide wide
latitude in high and low shear capabilities
• the use of stripping agents for odor removal and mixing of compatibilizing
agents
• the integration of sequential feeds and vents. An NFM/WE twin screw extruder
allows you to combine several process steps in a single machine. |
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Benefits of an
NFM/WE Twin Screw Extruder:
Our machines are designed for peak performance.
They can handle up to 5% moisture without
special
designs. Long L/D ratios permit multistage
additions. Excellent feed acceptance is made
possible by wide
openings and downward screw motion. Counter-rotating,
non-intermeshing screw design promotes mixing
and
blending without excessive shear. A broad
range of feed and vent types are available.
An equally important aspect of NFM/WE’s non-intermeshing
screw design is its trouble-free operation.
Wear is reduced because rubbing surfaces
are minimized. In addition, the twin screw
design allows small solid contaminants to
pass through without damaging the machine. |
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