Intertronics launches device capable of mixing two-part materials

Adhesives specialist Intertronics has launched the preeflow eco-DUOMIX, a system that mixes and dispenses two-part materials.

The eco-DUOMIX is suitable for applications within medical devices, where two-part adhesives are required to be dispensed with volumetric accuracy down to 0.008 ml.

The metering, mixing and application of two-part materials is always a difficult process, particularly when the required amounts are relatively small and in the sub-millilitre range. It is even more difficult to achieve both homogenous mixes and repeatable volumes if the two parts are of quite different viscosities, the mix ratio is much greater than 1:1, or there are fillers involved. This new technology combines the accuracy of volumetric positive displacement pumps with a novel dynamic mixing module to solve some of these challenges.  

The unit comprises of a motor-driven mixing capsule which allows dynamic mixing and has been optimised for no dead space. The capsule has a small volume and is easily replaceable, resulting in lower material wastage at the end of each shift, and simple cleaning and maintenance. It is also shorter than usual static mixing nozzles, resulting in less material pressure and less overall system height, which helps with precise positioning. A luer lock fitting permits the use of standard dispensing needles.

The eco-DUOMIX can be used in medical device manufacturing to dispense silicones, epoxy resins, polyurethanes, polyester resin or acrylates. The minimum dispensing quantity is 0.008 ml, which is applied using volumetric dispensing with an accuracy of ±1%. It is usable free standing or as part of an automated process.

Peter Swanson, managing director at Intertronics commented: “The new system means that difficult to mix, two-part materials, for which static mixing was insufficient, can now be mixed successfully.

“If mixing is insufficient, it can lead to visible flow marks and inadequate curing of components. The new eco-DUOMIX has advantages for those working in applications where materials have two very different viscosities or are otherwise difficult to mix. The dynamic mixing process can help to achieve optimal bonding, sealing or coating with two-part materials in demanding projects.”