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Spray technology has become an integral part of the production process and is a mainstay in many industrial workplaces. Used for applying paint, adhesives, varnishes and protective coverings to otherwise finished surfaces, there are a number of spray application techniques to choose from depending on your production needs. The most common techniques use compressed air to atomise and direct substance particles to the appropriate surface - for example, air guns and smaller air brushes. Such devices apply the desired substance to the workpiece through a nozzle via an air-pressurised gun. Models and attachments which are tailored to suit a variety of needs can be found, including automated devices or handheld machines which can be used to apply detail. When using an air gun for production it is important to thoroughly consider the shape of the workpiece and the desired paint consistency, as different nozzle sizes and shapes can be attached to the gun to achieve the desired effect.
- Covers numerous tasks including dyeing and painting
- Pneumatic units, airless spraying, or a combination
- The modern method in the automotive and construction industries
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Specialised machines which regulate air volume and pressure are also a popular choice. HVLP machines are similar to air guns in the delivery of the substance, but use a higher volume of compressed air at a lower pressure setting to atomise and propel the particles. Though a regulator is often required in order to lower the pressure from the air compressor, HVLP machines offer high levels of accuracy in coverage with minimal overspray, thereby keeping waste to a minimum. The lack of overspray also results in a reduced amount of air pollution in the area directly surrounding the workpiece. LVLP machines operate in a similar manner, but instead use a low volume of air at a low pressure. This vastly increases transfer efficiency and also requires far less compressed air, making it an economically friendly option for many businesses.
Other popular spray application options include electrostatic spray technology. Individual substance particles are given an individual electric charge which causes them to repel each other when leaving the spray nozzle. In order for the substance particles to stick, the workpiece is given either an opposite charge or is grounded. Electrostatic spraying results in a uniform, even coverage and significantly reduces the amount of paint lost to overspray. Airless spray guns are often used to paint
industrial machinery. This method connects the spray gun to a high pressure pump, which administers a thick, even coating of paint that penetrates crevices and hard to reach areas more effectively than conventional spray equipment.
Examples of the application of spray technology within an industrial setting can include construction work, where spray plaster makes it possible to rapidly produce very smooth surfaces. The automotive industry uses spray technology for the finishing of car bodies, and also for the protective coating of industrial equipment. The easy application of adhesives, protective coatings and stains make spray technology a popular wood processing method. Spray technologies can also be an efficient way of coating floors with protective abrasion resistant materials in industrial buildings and workshops.
Many companies tend to specialise in the development of tailored machines and different spray technologies. Particularly well-known brands include BLO Böhnstedt, WALTER PILOT, KRAUTZBERGER, EXITFLEX, WAGNER, TECHNOMATIK, GEMINI, KOHLER, WIWA, SATA, SCHRADER, FLUID SYSTEMS, PASYS PAINT SYSTEMS, FINISHING BRANDS L & S, MGV-Möst and SICMO.
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