preeflow® – MADE BY VISCOTEC TECHNOLOGY & USP – HOW IT WORKS EVEN WITH THE MOST SOPHISTICATED MATERIALS DOT & BEAD DISPENSING – INTERESTING FACTS preeflow® eco-PEN preeflow® eco-DUOMIX preeflow® eco-SPRAY preeflow® eco-CONTROL ORIGINAL preeflow® ACCESSORIES & CONSUMER MATERIALS 1 & 2 COMPONENT APPLICATIONS IN FOCUS

preeflow® MADE BY VISCOTEC The brand preeflow® was created in 2008 by ViscoTec. Since then, the microdispensing pro ducts of the eco-PEN and eco-DUO series have been successfully used in dispensing applications worldwide. preeflow® systems stand for volumetric, repeat able and economical dispensing of low to high viscosity liquids. They can be used individually as well as easily integrated into semi or fully auto mated systems. The fluids can range from watery to pasty, from self-lubricating to abrasive, from thixotropic to dilatant. There are almost no limits to the types of materials which...

TECHNOLOGY & USP HOW IT WORKS EVEN WITH THE MOST SOPHISTICATED MATERIALS MADE IN GERMANY From the initial idea to the quality control of the outgoing goods: All steps in the process are developed and implemented at the headquarters in Töging. In addition to the quality feature “Made in Germany“ and the “Think global, act local“ approach, we at preeflow® not only ensure the quality of the systems, but also offer optimum coordination and process reliability in all pro jects. THE ENDLESS PISTON PRINCIPLE The functional principle of the preeflow® dispenser is similar to that of an endless piston...

DOT & BEAD DISPENSING – INTERESTING FACTS DROPLET SIZES One microliter (0.001 ml) is the smallest dose quantity possible with a preeflow® dispenser. For illustration: This volume corre sponds to a cube of only one millimeter edge length. As dro plets on a substrate with a contact angle of 90°, this has a dia meter of only 1.56 mm. Larger droplets are possible at any time during the process thanks to the technology used. BEAD STRENGTH Due to pulsation-free dispensing technology, high-quality beads can be produced with preeflow® dispensers. Beads with a diameter of less than one millimeter can...

COMPARISON OF DISPENSING TECHNOLOGIES THERMAL PASTE 500,000 mPas/CPS Screw pumps Needle valves Hose pumps preeflow® Endless Piston Principle by ViscoTec ACETONE / ALCOHOL 0.8 mPas/CPS

SYSTEM PRESENTATION Our eco-PEN is a true volumetric dispensing system that applies the smallest amounts of single-component fluids – for high-pre cision dispensing technology. Thanks to the proven endless pis ton principle, watery to pasty liquids are perfectly dispensed. A clean, process-reliable dosage is achieved regardless of fluctu ations in viscosity. preeflow® stands for high-quality products, from control units to dispensers. Always true to the motto: “smaller, more precise, more economical“. They are suitable for manual workstations, such as workbench applications, or for semi and fully...

Dispensing regardless of viscosity Dosing independent of input pressure Pressure-tight without valve MORE INFORMATION CAN BE FOUND AT Suck-back effect Easy cleaning Adjustable dispensing flow Dispensing pressures from 0 to 20 bar Genuine volumetric dispensing TECHNICAL FEATURES OUR TIP By continuously monitoring of the dosing process with the flowplus16, errors can be detected, and a reliable process esta blished.

Operating principle Gauge pressure sensor Measuring range Measuring tolerance Sample rate Output signal Operating temperature Mechanical connection DESCRIPTION Incorrect dispensing affects the quality of the entire process and leads to waste of the material. This can be due to a constriction or blockage within the dispensing needle, an incorrect distance to the substrate or air trapped in the material interrupting the material application. By continuously monitoring the dispensing process with the flowplus16, errors can be detected, and a stable process esta blished. Thanks to the standardized...

SYSTEM PRESENTATION The 2 component mixing and dispensing systems from preeflow®: true volumetric output for 2 component materials. The smallest quantities of 2 component fluids and pastes are precisely mixed and dispensed. The mixing ratio is set to the second decimal place by targeted control of the individual com ponents. A clean, process-reliable dose is achieved regardless of fluctuations in viscosity. The preeflow® devices of the eco-DUO series are characterised by controlled thread break-off thanks to the suck-back effect, process reliability due to pressure monitoring and further func...

Genuine volumetric dispensing Dispensing regardless of viscosity Dosing independent of input pressure MORE INFORMATION CAN BE FOUND AT Pressure-tight without valve Suck-back effect Easy cleaning Adjustable mixing ratio Dispensing pressures from 0 to 40 bar TECHNICAL FEATURES

SYSTEM PRESENTATION Instead of a mixing helix, the eco-DUOMIX is equipped with a mixing capsule optimized for dead space, which can be used for dynamic mixing for the first time. Materials with the same and/or different viscosities were developed and evaluated. The dead space optimized mixing capsule used, instead of a mixing spiral, is available as a consumable and is installed direct ly at the outlet of the dispenser. Inside the capsule, the motordriven mixer ensures optimum mixing, even of components that are difficult to process, despite the small volume. An exact application of even the...

Dynamic mixing Genuine volumetric dispensing Dispensing regardless of viscosity MORE INFORMATION CAN BE FOUND AT Dosing independent of input pressure Pressure-tight without valve Suck-back effect Easy cleaning Dispensing pressures from 0 to 20 bar TECHNICAL FEATURES

SYSTEM PRESENTATION ViscoTec‘s precision volume dispenser enables applications in a wide variety of spray operations. The spray system consists of a revolutionary combination of the proven endless piston princip le and a low-flow spray chamber. This guarantees perfect spray ing of low to high viscosity material with high edge sharpness. The eco-SPRAY is particularly impressive when processing highly viscous materials. The system can apply and precisely position exact quantities independent of viscosity and input pressure. Depending on the desired layer thickness, the dose can be adjusted by simply...