MATERIALS TESTING | MACHINERY
Check marks: latest in materials testing
Materials testing – whether of incoming polymer pellets or fast-moving film – helps raise product quality, using techniques as diverse as camera inspection and thermal analysis
The need for product quality is critical in plastics extrusion. Black specks in incoming raw materials – or defects such as gels on extruded film – can both lead to product being scrapped or recalled. A variety of techniques, from visual inspection to thermal analysis, can help to ensure product quality is maintained in an efficient way. Atlas Weathering Services Group (AWSG) says
that its Virtual Inspection and Evaluation of Weath- ering (View) system helps companies avoid the challenges and expense of an on-site testing visit. Instead, clients can observe the effects of weather- ing on specimens remotely. In addition, the convenience of View allows assessments to be made more frequently. Using secure video conferencing software, a client interacts with an AWSG technician equipped with specialised, camera-enabled glasses to observe specimens in situ in high definition. They can then focus on specific areas of interest in detail
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– with magnification up to 60x using View’s digital microscope. Features of the service include: live on-line meetings or recorded video/audio; screen capture and whiteboard features to note specific areas of interest; and a digital microscope, for magnification of any specific surface defect. View is available at three US locations and will
be expanded to European testing sites in future, says the company.
Finding fault OCS offers a number of systems for inspection, analysis and classification of gels and contamina- tions.
Special camera and lighting technology – and the use of high-performance hardware and software components – helps OCS systems detect irregularities in real time. This includes gels, black specks or burn marks.
Main image: OCS offers a number of systems for finding
contamination in plastics
� January/February 2023 | FILM & SHEET EXTRUSION 21
IMAGE: OCS
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