Polyurethane machinery maker Hennecke GmbH has developed a cutting unit for composite spray molding (CSM) plants that it claims has a chopped glass-fiber metering system with a service life 10 times longer than other processors on the market.
The company in St. Augustine, Germany, said the new cutting technique significantly reduces downtime, maintenance and costs.
According to Hennecke, traditional cutting units cut the glass fibers to the correct length by using a nife roller located next to a press roller. The knife roller and integrated blades can suffer high wear, which changes the length of the chopped fibers. Later this can lead to the knife blades breaking, with bits ending up in the parts.
Hennecke's composites specialists have developed a new cutting process that does not need a knife roller or blades. The process is only interrupted when the glass rovings are changed. The formation of atomised spray depositions is prevented, thanks to the unit's special geometry, which is specially tailored to suite Hennecke's spray mixheads.
Its modular design means the new cutter can be quickly and easily retrofitted to existing CSM spray mixheads, the company said.
Hennecke Inc. is in Lawrence, Pa.
Tel. 724-271-3603, fax 724-271-3679, email [email protected].