Some of our extrusion capabilities include…..
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The plastic extrusions process begins with an accurate
part drawing defining all dimensions and critical
tolerances. Material selection is important as different
materials require different die design and after-forming
equipment. For instance, designing dies for acrylic
will not work for extruding polyethylene and so on. Die
design and manufacturing of dies requires qualified and
experienced toolmakers who possess a comprehensive
part drawing defining all dimensions and critical
tolerances. Material selection is important as different
materials require different die design and after-
will not work for extruding polyethylene and so on. Die
design and manufacturing of dies requires qualified and
experienced toolmakers who possess a comprehensive
Now the extrusion process begins, which entails adjusting extruder temperatures,
setting desirable line speeds and applying appropriate vacuum to calibrators. This
stage can take several hours before an acceptable part is achieved. In many
cases the dies need to be adjusted and sometimes new dies must be made.
If adjustments are necessary, the die testing procedure has to be performed again.
When the extrusion meets the print requirements, the die testing phase is finished
and the part is submitted to our customer for approval. Now that we have the
data to extrude a part that meets the print, we can set up and run production orders.
Under normal conditions the development phase can take four weeks. It is important
that the customer leave ample time to develop the profile extrusion. Once the part has
been developed, turn around time for production and subsequent orders is quick.
Understanding dimension tolerances see standard tolerance chart
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Physical properties of extruded plastics.....
- durometers in: rigid, semi-rigid and flexible
- enhanced to increase impact strength
- resistance to ultra-violet exposure
- resistance to cold weather for outdoor use
- resistance to extreme heat
- modified to withstand harsh chemicals
- fire retardant additives
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- fungicide additives
- foaming agents to reduce weight
- co-polymers (acrylic and abs)
- anti-stat additives for electronics
- gloss, semi-gloss and matte finishes
- surface texturing
knowledge of various plastic materials and their unique characteristics.
Once the dies are completed it’s time to perform a die test. This involves attaching
the die plates to the extruder and setting up the downstream equipment. Some
materials require that the extrusion travel through chilled water, some materials
can be cooled with air alone and some require a combination of both. In many
cases the extrusion, once leaving the die, must then enter a vacuum chamber or
sizer, in order to maintain the intended shape. Now the plastic resin must be
loaded into the extruder and brought to a specific temperature before the process
begins. The set up procedure can take several hours.
Once the dies are completed it’s time to perform a die test. This involves attaching
the die plates to the extruder and setting up the downstream equipment. Some
materials require that the extrusion travel through chilled water, some materials
can be cooled with air alone and some require a combination of both. In many
cases the extrusion, once leaving the die, must then enter a vacuum chamber or
sizer, in order to maintain the intended shape. Now the plastic resin must be
loaded into the extruder and brought to a specific temperature before the process
begins. The set up procedure can take several hours.
Plastic profile extrusion produces a thermoplastic
part that has a continuous cross-section, such as
a tube or channel. Using heat up to 600 degrees
and pressure, the profile is pulled at a specified line
speed through a machined set of dies and calibrators
that match the part profile. See below for types and
examples of profile extrusion.
part that has a continuous cross-
and pressure, the profile is pulled at a specified line
speed through a machined set of dies and calibrators
that match the part profile. See below for types and
examples of profile extrusion.
CUSTOM PROFILE EXTRUSION
