Prep-Mill® • Two Roll Mill
• rugged • safe • precision manufactured
Prep-Mill®
The Electrically Heated Prep-Mill® is a rugged, heavy-duty machine designed for small-scale milling of elastomeric and thermoplastic materials.
The Two-Roll Mill combines the features of precision construction, reliability and serviceability into a mobile and compact milling station, ensuring uniform batch-to-batch mixing characteristics.
Since temperature is a particularly critical parameter in any milling test, the Prep-Mill® is designed to maintain a target temperature of ± 1°C - the operating temperature is up to 260°C.
Various standard safety features provide the operator with exceptional protection. To fulfill the special torque, speed and safety requirements, C.W. Brabender® offers the Prep-Mill® with its own drive - as a self-contained Mobile Mill Station.
The Drive
A heavy-duty high torque system - the Prep-Mill® drive is designed to provide high torque output from a 2.5 HP sensorless vector drive with built-in torque overload protection. Monitored by a digital DC amp meter with torque overload indicator, including a digital RPM indicator - variable roll speed of 0-30 RPM.
In addition to the operator trip bar over the mill rolls, an operator 'kick plate' will also stop the drive when actuated. The 'kick plate' is permanently mounted on the working side of the drive. Also ‘emergency stop’ on top of unit.
The entire drive is mounted on a heavy gauge mobile cart with a foot brake. The cart includes a cabinet with a drawer for storage of tools and accessories.
Features
The Electrically Heated Prep-Mill® utilizes transfer rolls coated with Acrotherm TK400 (RC 70), an extremely
durable coating that substantially extends the life of the roll while providing top quality mirror finish and
tolerances - suited for High Wear Resistance...
• Electrically Heated 4"x8" Acrotherm TK400 rolls polished to a mirror finish
• Individual Temperature Controllers to control roll temperature
• Adjustable gap from .005” to .195"
• Standard friction ratio of 1.3:1 or 1:1 for Calendering
• Safety trip bar and operator kick plate with coupled electrical interlock
• Contoured roll guides prevent material from 'creeping off' the rolls and into the bushings • "Flip-up" design for easy cleaning
• Brass stripping knife permits quick, clean removal of milled stock
• A mixing volume of approximately 250ml, depending on gap setting and bandwidth
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