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PolyMax™
Calcium Carbonate Concentrates
for
Blow
Molding
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Significant
savings on raw material costs |
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Increased
productivity |
 |
Improved
performance |
Significant
savings on raw material costs
Improved
Productivity
-
Significantly
reduced cycle times
-
Improved
processablity - reduced amps, lower pressures, higher
outputs
Better part
performance
-
Increased
stiffness
-
Improved
ESCR
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Reduced
warpage
Product
Description
PolyMax™
CaCO3 concentrates are designed to improve the performance
of blow molding applications. PolyMax™ concentrates
contain 76%-80% of fine ground, surface treated CaCO3
combined with various polyolefin carrier resins.
Products
Available
PolyMax
LC™
80% CaCO3 in LLDPE for balanced cost & performance.
PolyMax
HD™ 76% CaCO3
in HDPE to maintain stiffness and top load.
Typical usage
levels of PolyMax™ CaCO3 concentrates: 10-20%
What
to Expect During Processing
No
temperature changes are needed. Lower extrusion amps and
pressure due to lower melt viscosity are often observed.
Minor adjustments to the shot size may be required to
compensate for extended parison. Final part appearance
will be relatively unaffected:
> Un-pigmented parts will appear uniformly
white
> Colored parts may require reformulation of color
maserbatch
> PolyMax™ concentrates can be added using standard
additive
feeders
Productivity
Gains
A major
advantage of PolyMax™ concentrates is their ability to
increase the thermal conductivity of the part in blow
molding processes. Addition of mineral results in cooler
parts; cycle times can be reduced, sometime by as much
as 30%. The final bottle or part will have significantly
less warping, even at the reduced cycle time.
Physical
Property Improvements
PolyMax™
increases part density based on loading level. Part
weight should be maintained to maximize material cost
savings. The reduction in wall thickness required to
maintain part weight is 5-11% depending on amount of
PolyMax™ used. This will result in:
> Impact and top load strength unaffected
> ESCR improved (Stress Crack Resistance)
> Part will feel stiffer
> Warpage reduced
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