DELO news: Drip-free dispensing for minimum adhesive quantities

The DELO-DOT RE pneumatic retraction valve strikes the balance between the repeatability and control of high-quality volumetric or jetting systems and the simple, direct dispensing of cartridges. After dispensing, the needle retracts to reverse adhesive flow. The resulting vacuum effect prevents dripping.

The valve dispenses adhesives bubble-free, at volumes as low as 0.09 µl with a standard deviation of less than 3%. This almost corresponds to the dosing consistency of high-quality jet valves. Therefore, it is capable of dispensing at significantly lower quantities than direct cartridge dispensing.

Thanks to its small size and weight of just over 50 grams, DELO-DOT RE can be easily integrated into almost any production line. Its actuator and fluid system are separate so that the valve does not have to be removed from the system when changing. In addition, the fluidics can be changed without tools, making assembly and disassembly easy.

The retraction valve is ideal for applications in semiconductor and camera production due to its described properties.

Benefits at a glance:

• Precise and bubble-free dispensing at volumes as low as 0.09 µl
• Maximum, reproducible dispensing process accuracy of up to 97%
• Retraction effect prevents dripping
• One-stop shop for customer-tailored solutions: High-tech adhesives, dispensing systems, and UV lamps, all from one supplier.
• Consulting services available