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Airless Spray
Airless spray atomizes fluid using pressure alone — no compressed air in the spray stream. Forcing material through a precisely sized orifice at high pressure breaks it apart on its own, which produces a heavier film, handles substantially higher viscosities, and puts dramatically less material into the surrounding air than air atomizing does.
For production applications where material cost, airborne mist, or film build is the constraint, industrial airless spray is usually the right answer. Spraymation engineers and manufactures automatic airless spray guns and complete systems in Fort Lauderdale, Florida.
Fluid is pressurized and forced through a small, precisely machined orifice. The pressure drop across that orifice does the atomizing. No air is introduced, so nothing propels the droplets outward beyond their own momentum.
That single difference drives everything else about the method. Droplets are larger and heavier than air-atomized droplets, so they travel to the target rather than drifting — which is where the transfer efficiency and reduced mist come from. Higher viscosity materials atomize successfully because pressure, not air shear, is doing the work. And film build per pass is greater, so fewer passes are needed.
The tradeoffs are real and worth stating plainly. Airless produces a coarser finish than air atomizing. Pattern and flow are both set by the nozzle orifice, so they can’t be adjusted independently — changing flow means changing tips. And tips wear, particularly with filled or abrasive materials, which widens the pattern and degrades atomization gradually enough that it often goes unnoticed.
| Method | Overspray | Viscosity range | Best for |
|---|---|---|---|
| Air atomizing | Highest | Low to medium | Finest films, finish quality, contoured coverage |
| Airless | Moderate | Medium to high | Heavier films, less mist, material savings |
| Air-dispersed | Low | Medium to high | Wide patterns without full atomization |
| Extrusion | None | High | Defined beads and stripes |
| Slot coating | None | Low to high | Uniform wide-web films at set thickness |
| Non-contact | Varies | Low to high | Delicate, irregular, or moving substrates |
Air Atomizing
Overspray
Highest
Viscosity range
Low to medium
Best for
Finest films, finish quality, contoured coverage
Airless
Overspray
Moderate
Viscosity range
Medium to high
Best for
Heavier films, less mist, material savings
Air-dispersed
Overspray
Low
Viscosity range
Medium to high
Best for
Wide patterns without full atomization
Extrusion
Overspray
None
Viscosity range
High
Best for
Defined beads and stripes
Slot coating
Overspray
None
Viscosity range
Low to high
Best for
Uniform wide-web films at set thickness
Non-contact
Overspray
Varies
Viscosity range
Low to high
Best for
Delicate, irregular, or moving substrates
[01]
Electromatic™ applicator heads configured for airless service, with fast positive cut-off that stops the pattern cleanly rather than trailing it. Built for automated production cycling — not hand-held work.
[02]
Orifice size and fan angle selected for your flow rate, pattern width, and material.
[03]
Pumps and high-pressure delivery sized for the viscosity you’re actually running, including filled and abrasive materials.
[04]
For materials that need temperature to reach sprayable viscosity, Teflon-lined stainless steel jacketed heated hose and heated applicators hold setpoint end to end.
[05]
Timing, triggering, and pattern control integrated to your line speed.
Coatings and protective films — heavier film build in fewer passes.
Sealants — sprayed sealant films and seam coverage.
Release agents at volume — where air-atomized mist creates a housekeeping or safety problem.
Food production — oils and coatings where airborne mist is a slip hazard and sanitation burden.
Wax and hot-melt materials — heated airless application of materials too viscous for air atomizing.
High-viscosity adhesives
An automatic airless spray gun that cycles thousands of times per shift has different requirements than a hand-held sprayer — cut-off speed, cycle life, and mounting repeatability among them.
Higher transfer efficiency than air atomizing means less material in the air and more on the part.
Unusual fluids and difficult geometry are the work we’re built for.
Spraymation systems are still in production service 40 years after installation.
Documented quality processes for regulated environments.
Spare parts, tips, consumables, remote technical support, and factory rebuilds.
For materials requiring temperature
Airless at line speed
A Fortune 100 tissue manufacturer needed consistent adhesive across three application points running simultaneously at over 2,000 ft/min. Spraymation’s unified multi-station system cut adhesive consumption 40%, delivered a 99.7% tail-seal first-pass rate, and paid back in under a year.
A medical device manufacturer couldn’t validate its siliconization process for GMP, with coating-weight variability above 25% and recurring glide-force failures. Spraymation’s Electromatic™ 29 system cut variability to below 8% CV, reduced silicone use 35%, and reached 0.25 mg dispensing precision.
A major OSB manufacturer’s drip bars over-applied wax and fouled the blender drum, and catalog nozzles couldn’t handle the high-viscosity emulsion. Spraymation’s custom air-atomizing spray headers cut wax consumption 30%, shortened the press cycle 15%, and saved over $150,000 a year.
Airless atomizes using fluid pressure through a small orifice; air atomizing uses compressed air to shear the fluid apart. Airless gives you heavier films, higher viscosity capability, and far less airborne mist. Air atomizing gives you a finer, more uniform finish and independent control of pattern and flow. Which one is right depends on whether finish quality or material efficiency is your binding constraint.
Orifice size sets flow rate, and fan angle sets pattern width — the two are linked in a single tip, so changing one means changing the other. Send us your required flow, pattern width, and material and we’ll specify it.
It depends heavily on material abrasiveness and duty cycle. Worn tips widen the pattern and coarsen atomization gradually, so the degradation is easy to miss — which is why scheduled replacement beats replacing on symptom.
Yes. Heated fluid handling, heated hose, and heated applicators are core Spraymation capability — heating to reach sprayable viscosity is one of the most common reasons customers move to airless.
No. The physics are the same; the engineering isn't. Automated production equipment is built for continuous cycling, precise triggering, integration with line controls, and a service life measured in decades.
Get Started
Tell us the material, the film you need, and your line speed. Our engineers will specify the system.
Or call us directly +1 954 484 9700