Nordson_EFD_Solutions_Mobile_Device_Wearables_Wireless_Brochure.pdf - 第8页

5 Fluid Positioning & Dispensing Applications General Assembly Hydr ophobic Coating Hydrophobic coatings Nordson EFD solutions enable the precise application of hydrophobic coatings to select areas of mobile devices …

Fluid Positioning &

Dispensing Applications

Microspeaker

UV-cure adhesives

Epoxies

Whether bonding microspeaker membranes or lids to assembly modules,

manufacturers need equipment to dispense deposits as small as 0.8 mg with

extreme accuracy.

Nordson EFD’s PICO jet dispensing solutions deliver continuous operation at

up to 1000 cycles per second (Hz) with shot sizes starting at 0.5 nanoliters.

Recommended Solutions

• PICO XP jet valve

• PICO jet valve (with needle adapter)

• 741MD-SS MicroDot needle valve

• xQR41 Series needle valve

• PRO4 Series automated dispensing system

• OptiSure AOI software and confocal laser

Benefits: Better process control and repeatable dispensing amounts (even

when changing pulse times).

Fluid Positioning &

Dispensing Applications

General Assembly

Hydrophobic Coating

Hydrophobic coatings

Nordson EFD solutions enable the precise application of hydrophobic coatings

to select areas of mobile devices and wearables during final assembly. With

consistent, uniform micro spray patterns, these Low Volume Low Pressure

solutions prevent water ingress.

Liquid droplets fly off critical components such as speakers and microphones,

eliminating damage, which improves the reliability of the final product. This

enhances durability of the device components for long-lasting use during

their life term.

Recommended Solutions

• 787MS-SS MicroSpray valve

• 781Mini spray valve

• EV Series automated dispensing system

• 4-Axis R Series automated dispensing system

Benefits: Micro spray patterns between 1 mm (0.04") and 19.1 mm (0.75") in

diameter. Zero overspray and reduced waste and operating costs associated

with expensive protective fluids.

Fluid Positioning &

Dispensing Applications

Primers

Functional fluids

Surface treatment coatings

Primer applications increase the adhesion of different subassemblies, e.g. volume

and power button components, to pressure sensitive adhesives (PSAs). This

makes components more durable and able to endure multiple clicks by users.

Primers are highly volatile solvents and are difficult to handle and dispense.

Nordson EFD’s expertise in precise fluid dispensing allows manufacturers

to dispense accurate amounts of these functional fluids in constrained and

miniaturized areas. Uniform coating that results due to dispensing primes the

substrate uniformly for smooth operation during its life cycle.

EFD solutions allow manufacturers to coat PCB components with uniform

spray patterns as small as 1 mm (0.04") in diameter and dispense microdot

deposits as small as 0.15 mm (0.006") in hard-to-access areas. Our tabletop

robot solutions facilitate this process by offering an end-to-end solution.