PROCESS CONTROL | INLINE MEASUREMENT


second material displaying a much more flexible course of elongation hardening with higher values. Numerical analysis provides a clearer picture, the company says (Table 1). While there is no selectivity for the melt index, extension viscosity shows a clear difference of over 60% as a result of the different branching, whereas the viscosity gives an opposite evaluation. However, shear viscosity correlates with average molecular weight. It says this example shows that a clear material differentia- tion with different molecular weight distribution or branching is possible via elongation viscosity. This has not been detectable through the methods frequently used up to now, such as determination of melt index, the company says. US-based Equitech International has intro- duced a new leasing scheme with the aim of making its inline UV-Vis colour measurement technology more accessible. The company says that, until now, the cost of in-line colour measure- ment has been a barrier to companies that have a need to implement this technology in their produc- tion lines. It says access to its in-line UV-Vis colour measurement technology is now possible for a few thousand dollars per month, eliminating the need


for capital expenditure. According to Equitech, colour can convey


information indicating the consistency and quality of products. It has long been measured by taking samples from the process line and analysing them using laboratory spectrophotometers. However, offline colour measurement provides information about past events – whether they took place an hour, a shift or a day ago. For example, offline colour measurement cannot detect pulsating feeders, drifting processes and uncontrolled startup phases. The company says the advent of Industry 4.0, machine learning and AI, means that quality control systems will migrate from laboratory analysis to real-time quality assurance, providing information about the current process but also potentially into the future using predictive analytics.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.colvistec.de � www.skz.de � www.sikora.net � www.goettfert.com � www.equitechintl.com � www.rcs-entsorgung.de


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