MicroPellets Australia ROTOMOULD July, 2006

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MicroPellets AustraliaROTOMOULD July, 2006

• Micro Pellets
• -
• A step forward in developing the rotational
  moulding industry.

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What are micro pellets?

• Small regular oval shaped plastic granules with a
  diameter between 500-600µm.
• Produced from the same base material as powder,
  i.e. Qenos 711UV etc.
• Differ from powder by way of the manufacturing
  process and particle size distribution.

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Process comparison
POWDER
MICROPELLETS
Process Water
Centrifugal Dryer
Cutter
PDV
Granules
190-210oC
Water Bath
Bag
Extruder
Source Practical Guide to Rotational Moulding by
R Crawford M Kearns
Die Plate
Process Water Pump
Source Gala Industries
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Particle size distribution comparison.
Ave 550 µm
Ave 300-350 µm
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What are the benefits of micro pellets?

• Manufacturing Process
• Consistent quality and size
• Less contamination
• Dust free during mould filling
• Shape and Particle Size Distribution
• Potential for faster cook times
• Potential for lower peak internal air temperature
• Greater bulk density (0.51kg/m3 cf. 0.34 kg/m3)
• Improved flow (10 sec cf. 32 sec)
• Potential for improved mechanical properties
• Improved filling and definition of difficult to
  fill mould areas
• Moulded parts with more uniform wall thickness
• Maintained / improved surface finish
• Other
• Cheaper raw material

IMPROVED ECONOMICS AND MORE OPTIONS FOR THE
MOULDER
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Micro Pellet Tank Trial
Oven machine, Tank Size 2,250L, Shot Weight
55kgs, Wall thickness 5mm, Colour Merino.
gt 12
Meet requirements of tank standard impact testing
with no ductile or brittle failures using a
9.06kg drop dart _at_ 1.4m.
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Septic Tank 3000L

• Micro pellets selected for cleanliness and ease
  of use.

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Snow Board
Micro pellets selected for flow properties to
fill grooves.
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Ventilated Roof Tile.

• Micro pellets selected
• More dense and
• Ability to mould intricate and
• fine mesh detail

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Pump Housing

• Micro pellets selected
• Uniform wall thickness
• High quality surface finish and detail