Betty Coleman, above left, outreach director for the National Plastics Center in Leominster, Mass., and PlastiVan staffer Margie Weiner, demonstrate basic plastic thermoforming principles to eighth graders from Minneapolis' Annunciation Catholic School, left. The PlastiVan demo took place Sept. 22 during the Society of Plastics Engineers Thermoforming Division Conference in Minneapolis.
Back o basics
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