Please visit: GOETTFERT Inc
488 Lakeshore Pkwy.
Rock Hill, SC 29730 US
All extrusion processes depend to some degree on the melt strength of the polymer, and this property is generally a no-show on data sheets.
Capillary and torque rheometers are good for simulating processing conditions, troubleshooting, and QC. But dynamic rotational instruments can tell you more about a resin's molecular structure.
This first installment in a series on buying commonly used lab equipment highlights how computerization and automation have improved the accuracy and repeatability of melt-flow testing.