Along with temperature, shear rate, shear stress, filler content, and molecular weight change the fluidity of plastic melts and should be tested for their impact.
For ISO 22007, testing technicians can determine thermal conductivity data easily by using Capillary Rheometers with applicable accessory.
With a capillary rheometer, Instron's Die Swell Tester can determine the extrudate swell from the polymeric material placed into a die during plastics manufacturing.
To ensure sports goggles have correct visual, mechanical, and thermal properties, check the injection of mold plastic components with a CEAST SmartRHEO machine.
ISO 11443 and ASTM D3835 are specifications for determining the flow properties of polymeric materials at temperatures lower and higher than the melting point.
Testing with CEAST Capillary Rheometers and Visual RHEO Software allows manufacturers to understand the change in polymer viscosity related to time.
With a CEAST SR50 Capillary Rheometer, Instron was able to test silicone materials to determine which can undergo extrusion at room temperature, observing ISO 11443.
Low viscosity fluid with a high-shear environment for spray application can be tested with an Instron CEAST SR20 capillary rheometer.
ASTM D1238 prescribes four test procedures to measure the fluidity of plastics in the Melt Flow Index with testing the rate of extrusion of resins through a die.
A CEAST Capillary Rheometer has been used to test the flow behavior of plastic cap liners of bottle cap to prevent leaks with a tight mold and quality seal.
Thermo-Plastic Elastomers and synthetic rubber can be tested on a CEAST SmartRHEO capillary rheometer to ensure adherence to ISO 11443 and ASTM D3835.
A controller can test how much a mold will shrink by placing it in a high-pressure chamber with controlled temperature, volume, and pressure, following ISO 17744.
When materials like feedstock for Metal Injection Molding do not need to be cured and can be injection molded without extra aids, they can undergo capillary rheometer tests.
Instead of manual cleaning methods, the Integrated Barrel Cleaning Device is used to easily clean Melt Flow Testers after every test to ensure accuracy.