Pushtrusion for extrusion.
In Pushtrusion, continuous glass fibers are pulled off a reel and through a cylinder in which they are wetted out with molten polymer under high pressure. Impregnated fibers are then chopped by a strand cutter and dropped into the melt stream in the second stage of a two-stage single-screw extruder. The process will be used to make PVC and PP composite profiles with loadings of up to 50% glass. It could even be used to add long glass to-wood-filled composites to increase strength. PlastiComp: (507) 454-4334, www.plasticomp.com; GaMra: (715) 684-7905, www.gamra.com
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|Date:||Apr 1, 2004|
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