Engineering Design Method for Plasticating Screws

The discharge temperature should always be measured with a handheld temperature probe because it provides the most accurate measurement. Thermocouple sensors positioned through transfer lines and exposed to the melt stream do not provide an acceptable measurement of the discharge temperature due to the high 

Physical properties that need to be obtained for the resins include the shear rheology, melt density, thermal conductivity, and heat capacity. The shear rheology of 

The feed and melting sections upstream of the metering section are set using experience and existing experimental data. For example, if the base case worked well with a compression ratio and compression rate of 3.0 and 0.0035, respectively, then the target screw would be designed with the same upstream specifications. The compression ratio and compression rate are as follows  

Sion rate for the transition section of the screw describes the rate that the channei depth decreases as the resin is transported through the section. Compression rate and ratios are discussed in Sections 6.1 and 10.8.2. 

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