Recently introduced by DELO Industrial Adhesives, the DELO-DOT RE is a new retraction valve that helps to ensure a quality bond, as well as dispense adhesive droplets as small as 0.09µl.
Using compressed air, the pneumatic retraction valve features heightened precision and control thanks to the retraction mechanism. This mechanism works after dispensing the adhesive, rather than ceasing air compression, the needle ‘retracts’, pulling back slightly to reverse the flow of adhesive which, in turn, creates a vacuum effect, curtailing the adhesive flow and preventing drips.
Measuring 33mm x 25mm x 112mm, the system can be easily integrated into almost any production line, requiring only an additional 18mm to accommodate for its width. A weight of less than 100g also helps minimise the impact on existing systems. Tool-free cartridge replacement is also possible via the spring loaded reinforcement clips located on the actuator component. In addition, to enhance performance of the system, any part of the valve which comes in contact with fluid is entirely encapsulated and can be easily replaced.
The versatility of DELO-DOT RE means it can be utilised across many application fields. In semiconductor potting, as well as active alignment processes for cameras, dispensing directly from the cartridge is often preferred. Here, the valve’s retraction mechanism provides higher yields by reducing waste through drips while enhancing control during dispensing.
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