SML presents new high-end vacuum system for demanding applications

SML has developed a new series of vacuum systems for the processing of hygroscopic polymers sensitive to hydrolysis. The new systems are especially suitable for the extrusion of PET, PA or PLA and help to abandon time and energy consuming pre-drying processes, while keeping the final produts at the highest quality levels.

The heart of the new series consists of dry running high-performance vacuum pumps with an efficient, upstream-positioned filtration system.

Compared with conventional water ring vacuum pumps, the main advantages of SML’s new systems are the elimination of fresh water consumption, the high energy efficiency and the achievable vacuum levels.

While water ring vacuum pumps may provide absolute pressures down to 30 hPa, SML’s new solution reaches down below absolute pressures of less than 1 hPa. Due to the modular design, suction capacities from 1,000 to 5,000 m³/h or more can be provided.

Like all machinery from SML, the new vacuum systems are characterised by the precise interaction of high-end components. The hardware is made entirely from stainless steel and the intuitive machine control integrates perfectly into the HMI of the respective extrusion unit.

Highlights at a glance:

• Vacuum systems for the extrusion of hygroscopic plastics without pre-drying
• Absolute vacuum pressures from 1 to 10 hPa, suction capacity up to 5,000 m³/h
• Designed for the use in single screw and twin screw extruders
• Applicable to new extrusion systems and retrofits
• Modular design for either discontinuous or continuous operation
• High-end components and materials
• Energy-efficient and eco-friendly due to dry running vacuum pumps
• Perfect integration of the systems’ control units with SML’s SMILE control system
• Developed by SML – first hand service by SML technicians

SML’s new series of high-end vacuum systems were designed both for new extrusion units and for retrofitting of existing systems.

For more information, please get in contact with:

Julian Leingartner
Senior R&D Engineer
lei@sml.at