Abstract
Polyolefins are used extensively for thin-gauge, high speed, roll- fed thermoforming. However, polyolefins suffer from a variety of problems, in cluding slow processing speed, a narrow processing window and poor stretch ability. Trial results demonstrated that acrylic modified polypropylene has a broader processing window, improved stretchability and faster processing on conventional roll-fed thermoforming equipment. Trials on commercial equip ment, using sheet from 10-50 mils (.25-1.2 mm) are discussed, as well as the economics of the final parts.
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