What is a polyurethane spray machine?
Release Date:
Jul 22,2022
As its name suggests, a polyurethane spray machine is a device used to apply polyurethane coatings by spraying. Polyurethane is an insulating and waterproof coating widely employed in construction. A polyurethane spray machine is a high-pressure type that mixes the polyurethane components at high speed within a compact mixing chamber, ensuring thorough blending. The rapidly moving material is atomized into fine droplets at the spray gun nozzle and evenly applied to the surface of the substrate.
As its name suggests, a polyurethane spray machine is a device used to apply polyurethane coatings by spraying. Polyurethane is an insulating and waterproof coating that is widely employed in the construction industry. Polyurethane spray machine It is a high-pressure polyurethane spray machine. In the compact mixing chamber, the polyurethane material undergoes high-speed impact and rotation, ensuring thorough blending. The rapidly moving material is atomized into fine droplets at the spray gun nozzle and evenly applied to the object’s surface.
With the rapid development of China’s building energy‑efficiency market, Polyurethane spray machine It has been widely adopted in the fields of building thermal insulation and waterproofing, with demand steadily rising. The rapid growth of the polyurethane spray‑machine market is largely attributable to the advantages of these machines.
1. Maintain a clean work environment. Ensure that paint does not drip or splash in areas where it is not intended.
2. Construction is not limited by height. The spray gun has a long reach, allowing for extended spraying distances. It is generally easy to apply coatings at typical heights.
3. High production efficiency, particularly well-suited for thermal insulation of large‑area and irregularly shaped objects; rapid molding and high productivity.
4. Suitable for substrates of various shapes. Whether on flat, vertical, or overhead surfaces, and whether the object is circular, spherical, or an irregularly shaped complex form, it can be directly sprayed and foamed without incurring costly mold‑making expenses.
5. High pressure: The high-pressure system of polyurethane spray equipment atomizes the polyurethane coating into fine particles and sprays it onto the wall. Even in narrow gaps, the coating can be applied, ensuring a tighter bond between the coating and the substrate.
Polyurethane spray machine On-site foam molding is the reason for its widespread adoption. The process requires simple equipment and is easy to operate, allowing for either spray application or pour‑in‑place installation. It can be used on even the most complex roof structures. Typically, a crew of one to three workers handles the job, with a daily output exceeding 20 cubic meters. The sprayed coating achieves a thickness of 30 mm, enabling approximately 1,000 square meters per day—ten times the productivity of conventional materials—while reducing labor intensity, improving working conditions, and minimizing environmental impact. Polyurethane rigid foam expands 15–18 times in volume from its liquid state, requiring only small quantities of raw material. According to statistics, using this material cuts vehicle transportation costs by more than 80% and significantly reduces the number of vertical‑transport trips required at the construction site.
If the roof is not properly waterproofed, it will inevitably develop leaks over time. To prevent this, it is recommended to apply a waterproofing treatment to the roof. The method involves spraying polyurethane foam using a specialized waterproofing sprayer:
Before applying roof waterproofing, the roof surface must first be leveled with cement mortar, after which waterproofing work can proceed to effectively prevent leaks caused by uneven thickness. Next, thoroughly remove dust, debris, and other contaminants from the roof surface, then use a polyurethane spray‑on system to apply a polyurethane waterproof coating. Polyurethane spraying ensures more uniform coverage, enhancing waterproofing performance and reducing the likelihood of future leaks.
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