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Arkema
PMMA Polymethylmethacrylate (Acrylic)
Pre-drying is not necessary if a vented cylinder is used but if a normal cylinder is used then PMMA must be processed dry and it is advisable to pre- dry the granules for up to 8 hours at 70-100°C. Surface defects and blisters will form if damp granules are processed.

» Injection Molding:
Melt temperature : 200- 250°C
Mold temperature : 40 80°C

High injection pressures are needed because of poor flow properties and it may be necessary to inject slowly to get the correct flow.

» Extrusion:
Extrusion temperature : 180 250°C

A degassing screw with an L/D ratio of 20 30 is recommended.
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