Application Methods for Cyanoacrylates

Cyanoacrylates can be dispensed precisely, cleanly and reliably using a range of dispensing equipment, ranging from simple hand-held dispensers to fnlly automatic systems incorporated into purpose-built special production equipment. 

The most common principle of dispensing is to use the pressure/time system as described in Section 10.9.1. 

A pressure/time system usually consists of a reservoir, a dispense valve and a controller. The type of dispense valve depends on whether it needs to be hand-held, stationary or advancing, and if there are standard or high precision requirements. 

The type of application and workplace conditions, such as production rate, dispense quantity and cure speed will determine whether manual, semi-automatic or fully automatic dispensers will be required. 

A number of dispense valves are available for dispensing cyanoacrylates including pinch valves, diaphragm valves and seat valves. The wetted parts are typically manufactured from PTFE or acetal to prevent premature curing and often incorporate some form of stroke adjustment for fine-tuning of the dispense characteristic. 

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