New flex material to reduce product waste
Nordson EFD has introduced its Optimum Clear Flex Piston, a new dispensing solution to achieve more consistent results when dispensing viscous fluids. The Clear Flex Piston reduces bounce by creating a tighter seal between the piston and the fluid than other pistons in the market.
Nordson EFD's new piston is made from a pliable material that allows the inserted piston to flex under pressure, creating a tight seal between the piston and barrel. The seal stops air from passing by the piston, preventing piston separation and pulsing (or bounce) during dispensing. The piston fits tightly enough into the syringe barrel to maintain excellent barrel wall wiping throughout the dispensing cycle, reducing costly fluid waste. The clear flex material provides superior strength, exceptional clarity, and chemical compatibility with a wide variety of assembly fluids ranging from adhesive dispensing to lubrication systems. It is especially effective for highly viscous or filled materials where piston bounce is a known issue, such as greases, pastes, or solder paste.
"Entrapped air is the leading cause of piston bounce in air pulse pressure dispensing," said Brian Dodier, Nordson EFD global product line manager. "In piston bounce conditions, micro- bubbles and air pockets can surface between the piston and fluid. As this air builds, a lack of positive compression is created on the fluid. When this pressure releases, excessive material can be dispensed leading to inconsistent deposits. The Optimum Clear Flex Piston minimizes piston bounce by preventing air from becoming entrapped."
Nordson EFD's Optimum syringe barrels and cartridge systems set the standard for quality, consistency, and reliability within the fluid dispensing industry. Each Optimum dispensing component has been designed as part of a complete, integrated system that improves yields and reduces costs by producing the most accurate, repeatable results possible. All EFD Optimum dispensing components are produced silicone-free by Nordson EFD in the USA and are certified safe for industrial use. Current Optimum systems can easily be fitted with the clear flex piston.
