CMT Materials introduces composite mold material


Thermoformers typically have not had much choice in materials for making prototype molds to test new product designs. That's changed with the introduction of Hyvac-LCM (Lightweight Composite Material) from CMT Materials Inc. (Attleboro, MA). "There has been a big gap between aluminum tooling for production and wood or MDF to make prototype molds or molds for short runs," said Conor Carlin, Hyvac Sales & Marketing Manager. "Wood or MDF isn't suitable for plastics. What we've developed is an alternative to wood with performance closer to aluminum."

Hyvac-LCM is a new composite mold material that allows thermoformers to optimize material distribution, reduce or even eliminate chill marks, reduce tool weight and simplify mold production for cut-sheet thermoforming. The product consists of a smooth syntactic outer shell easily formed over a porous inner core of composite beads. The porous core allows vacuum anywhere in the tool by drilling holes in the outer shell.
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