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What are the respective characteristics of air‑assisted sprayers and airless sprayers?

Release Date:

Feb 13,2022

These days, people are far more likely to browse spray‑coating equipment online. Based on data gathered from various sources, we’ve concluded that “spray‑coating machine” is just one category—under it lie many different products, including air‑spray and airless sprayers, all of which remain largely unknown to us.

Nowadays, the likelihood of people browsing spray guns online is extremely high. Based on statistics gathered from various sources, we’ve concluded that a “spray gun” is just one category; it encompasses many different products, including air‑powered spray guns and… Airless sprayer , these are all things we don’t know.

In fact, airless spraying equipment addresses several challenges faced by construction managers, including high labor intensity, low efficiency, large workforces, inconsistent coating quality, poor uniformity, and excessive paint waste. The system primarily comprises a motorized vehicle capable of moving on the ground and an automated lateral‑moving spray unit mounted at the vehicle’s rear. The vehicle is equipped with an onboard control system that regulates both the vehicle’s longitudinal, constant‑speed travel and the lateral movement of the automated spray unit. By automatically adjusting parameters according to preset settings, it enables large‑area spraying, reduces labor requirements, boosts spraying efficiency, and ensures stable, high‑quality results with excellent uniformity.

Airless sprayer It is a device that atomizes coating into a mist, consisting of a feed system, a spray gun, and an atomization source. It is primarily categorized into air‑spray guns, airless spray guns, and electrostatic spray guns. Today, we will focus on the distinct characteristics of air‑spray and airless spray guns, as well as their respective application ranges.

(1) There are air‑spray guns that rely on compressed air to apply paint. They are primarily categorized into fixed‑nozzle guns, rotary guns, reciprocating‑type devices, and robotic‑arm systems. Alternatively, high‑pressure spraying can be employed, with no air assist, making it particularly well suited for industries with stringent optical‑quality requirements.

It is primarily suited for industries with stringent surface‑finishing requirements, such as plastics and plastic components, glass and ceramics, hardware, magnetic rings and magnets, appliance housings, mobile phone casings, and sporting goods. This is because it significantly enhances product uniformity and gloss.

(2) Airless sprayers do not require compressed air for application. Based on paint‑application methods such as roller coating, dip coating, vacuum coating, and electrophoretic coating, the gases used typically contain no air, resulting in extended corrosion‑resistance life.

When the sprayer operates continuously for extended periods and severe frost buildup occurs inside and outside the silencer, install a water‑separator filter and an air dryer before connecting the compressed‑air supply, and consider removing the silencer. Alternatively, replace the oil in the oil cup of the oil‑mist lubricator with antifreeze intended for automotive radiators.

Airless spraying The machine is primarily suited for coating large components such as steel structures, C‑section steel, bridges, and sluice gates, with equally impressive results.

In summary, compared with air‑assisted spraying, airless spraying produces a more uniform finish with no grainy texture; thanks to the absence of air contact, the paint dries cleanly. Airless sprayers are suitable for applying high‑viscosity paints and deliver crisp edges, making them ideal for applications that require well‑defined boundaries.

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