India
We are instrumental in offering highly resistive PMMA – Polymethylmethacrylate, which is an economical alternative to ploycarbonates. With normal cylinders pre drying of granules for up to 8 hours at 70-100 C is recommended whereas with vented cylinders, it can be processed without any drying. If damp granules are processed, they form surface defects and blisters. Sourced from leading manufacturers, it is appreciated by our clients due to its moderate properties, transparency, easy handling & processing, and low cost.
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 – 250C
Recommended degassing screw with an L/D ratio of 20 –30
Established in the year 1978, D R polymers is an international trading house dealing in all polymers for the last 23 years with specialization in engineering plastic polymers.
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