preeflow microdispensing
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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-DUO preeflow® eco-SPRAY preeflow® eco-CONTROL ORIGINAL preeflow® ACCESSORIES & CONSUMER MATERIALS

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...

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...

- INTERESTING FACTS DROPLET SIZES One microliter (0.001 ml) is the smallest dose quantity possible with a preeflow® dispenser. For illustration: This volume corresponds to a cube of only one millimeter edge length. As droplets on a substrate with a contact angle of 90°, this has a diameter 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 also be produced. With...

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-precision dispensing technology. Thanks to the proven endless piston principle, watery to pasty liquids are perfectly dispensed. A clean, process-reliable dosage is achieved regardless of fluctuations 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...

Viscosity-independent dispensing Easy cleaning Dosage independent of input pressure Adjustable dispensing flow Pressure-tight without valve Suck-back effect Dispensing pressures from 0 to 20 bar Genuine volumetric dispensing OUR TIP By continuously monitoring of the dosing process with the flowplus16, errors can be detected, and a reliable process esta blished.

ONE SENSOR, MANY APPLICATIONS 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 established. Thanks to the standardized Luer-Lock connection, the high sampling rate of 3 kHz as well as the integrated pressure sensing and compact size,...

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 components. 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...

Viscosity-independent dispensing Easy cleaning Dosage independent of input pressure Adjustable mixing ratio Pressure-tight without valve Suck-back effect Dispensing pressures from 0 to 40 bar Genuine volumetric dispensing

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 principle and a low-flow spray chamber. This guarantees perfect spraying 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...

Spraying independent of viscosity Easy cleaning Dosage independent of input pressure Pressure-tight without valve Optional heating Uniform spray pattern Spraying of defined quantities

INSTALLATION EXAMPLES The preeflow® controllers simplify every dispensing process. They are perfectly matched for all dispensers within the eco-PEN, eco-DUO and eco-SPRAY series. The eco-CONTROL EC200 2.0 serves primarily to control and parameterize the preeflow® dispensers. In addition, pressure monitoring is carried out by the controller for a reliable process with precise dispensing results. The control unit can be easily integrated into fully automatic systems and meets all requirements of modern dispensing processes. The eco-CONTROL EC200 2.0 offers a compact solution with an...