Jet Technology: Fluid Dispensing at Jet Speed
Jet Technology represents a paradigm shift in precision dispensing. In traditional contact methods, a needle touches down and physically applies the fluid. In non-contact dispensing, a jet hovers over and shoots fluid at the work surface without ever touching it. The difference is similar to a fountain pen compared with an inkjet printer.
Jetting is primarily a valve-based technology. In piezoelectric systems, a voltage is applied to a piezoceramic stack which then expands/contracts to operate the valve. In air-actuated systems such as TS9200D, air pressure operates the valve. However, instead of the large sliding valve stem in conventional needle valves, the TS9200D utilizes a very low-mass diaphragm, which requires less energy and speeds up the process. In jet dispensing, the fluid is separated from the applicator using droplet momentum and the result is a perfectly round dot. Jetting produces dots of extremely small size, low volume and high consistency. Furthermore, the positive shut-off of jet dispensing enables the execution of precise lines and sharp corners. Incorporating a multi-function process controller means that dispensing results can be perfected by fine-tuning the jet and fluid pressures, drop size, drop rate, and dispensing parameters such as refill and dwell time.
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