Testing
NPE News Wrap-Up: Testing & Measuring Instruments
There was no shortage of new developments in product inspection devices and instruments for testing color and appearance as well as mechanical, rheological, thermal, and weathering properties.
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Testing & QC at NPE 2003
Plastics molders, extruders, and compounders will have a lot to see in testing and measurement equipment.
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On-Line PET Bottle Thickness Gauging Brings Responsive Process Control
Maintaining desired wall thickness in the neck, shoulder, wall, and base of a PET bottle is a continuing challenge to blow molders, says Chris Robinson, head of quality assurance at the Bowling Green, Ohio, plant of Southeastern Container (SEC) Group Inc.
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IMPACT: Which Test to Use? Which Instrument to Buy?
Impact testing is a complex and controversial subject, and one that is in the midst of change. These factors add challenge to selection of the most appropriate impact instrument for a processor's lab.
Read MoreThe Latest Instruments For Testing & QC
The huge triennial plastics exhibition in June showcased new developments in product inspection and lab instruments for testing mechanical properties, melt rheology, weatherability, color, and appearance.
Read MoreCapacitance Gauges Come of Age For Blown-Film Thickness Control
Thanks to recent technical advances, relatively inexpensive capacitance thickness gauges reportedly are now stable enough for reliable closed-loop control, not just monitoring thickness variations. Another big step forward for capacitance gauges is the arrival of non-contact heads that can be mounted on the bubble instead of farther downstream on the layflat, thereby allowing quicker response to thickness variations.
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