To properly calculate cycle time, you need to understand how the modulus of a polymer increases as it cools in the mold.
Understanding cooling—how a given material develops modulus as it solidifies—requires access to data that provides some insight into the relationship between modulus and temperature. Dynamic mechanical analysis is a helpful tool.
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Temperature, pressure and time ultimately dictate plastics processing so it’s not surprising that Know How columns from industry experts on these topics are consistently among the most popular on our site.