A new metering machine for fi lled PUR is designed with two pistons operating in tandem to feed abrasive fi llers, fl ame retardants, or reinforcing fi bers.

A new metering machine for fi lled PUR is designed with two pistons operating in tandem to feed abrasive fi llers, fl ame retardants, or reinforcing fi bers. The Tandem Hybrid machine from Krauss-Maffei Corp., Florence, Ky., reportedly overcomes the inconsistent fl ow rate of single-piston metering. Constant fl ow is often needed with long shot times or to supply several mixheads. While one piston is discharging, the other is fi lling. The controls are said to ensure that fl ow remains constant during piston switchover. Servomotor spindle drives reportedly provide precise piston movements and much simpler startup than hydraulic drives. K-M is hosting an open house for PUR molders June 13-14 at its new Detroit Competence Center in Novi, Mich. Tel: (606) 283-0200 . www.krauss-maffei.com

Krauss-Maffei
Reaction Process Machinery
7095 Industrial Rd. PO Box 6270
Florence, KY 41022-6270
Phone (606) 283-0200 Fax (606) 283-0311