Say Goodbye to Roughness: Are you experiencing "rash" or grainy textures on your paint film? You need an environmental management solution.

Does your freshly painted surface feel rough like sandpaper? “Particles” and “rash” not only detract from the product’s appearance but can also become weak points for corrosion. As a professional manufacturer, we teach you how to manage airborne dust, paint filtration, and equipment cleaning from the source to create a “mirror-level” industrial coating environment. In high-end machinery and automotive parts coating, we strive for a silky smooth and even feel. However, many factories find small bumps on the paint film surface after application, commonly known as “particles” or “rash.” This is usually not due to the paint itself being damaged, but rather a problem with the “health” of the application environment. [Images of paint film particles, paint filtration, oil-water separators, and standardized enclosed spray booths are included.] As an industrial paint manufacturer, we break down the sources of these defects and their management strategies: 1. “Particles”: Products of exogenous pollution. Culprits: Flying dust, debris from the sanding workshop, and even fibers from workers’ clothing. Countermeasures: 1. Environmental Isolation: The spray painting room must be physically isolated from the sanding and shot blasting rooms. Wet Operation: Spray water on the ground before construction to reduce dust and prevent dust from being stirred up by personnel. Paint Filtration: After mixing the paint, it must be filtered using a 120-200 mesh filter to remove impurities that may have fallen in during the mixing process. 2. “Prickly Heat”: A Trap of Aerosols and Moisture Culprit: Compressed air contains oil or moisture; or the underlying paint film is not completely dry, allowing solvent to break through after forming a skin on the surface. Countermeasures: Air Source Management: Regularly check the oil-water separator to ensure that the spray gun sprays clean, dry air. Control Paint Film Thickness: Avoid applying too thick a single coat to prevent solvent from being trapped inside and forming bubbles. 3. “Self-Checklist” for the Painting Workshop Spray Gun Cleaning: Is the spray gun thoroughly cleaned every time the paint is changed or the machine is stopped? Residual dried paint skin is the biggest source of particles. Tooling Cleanliness: Has the surface of the workpiece to be sprayed undergone thorough dust and oil removal? Air Intake System: Are the filter cotton in the spray booth replaced regularly? Conclusion: Industrial coating is “30% paint quality and 70% environment quality.” Establishing a standardized cleaning management system can not only improve the appearance of products but also significantly reduce rework costs and win customer trust. Related Readings: Scratch-resistant, high-adhesion paint selection methods! Key technical factors analysis of high-adhesion plastic paints Rejecting “sticky”: Industrial paint film not drying completely? In-depth investigation of the two major killers: hardener and humidity Rejecting “pitted surface”: Paint film blistering and pinholes after spraying? The key lies in these few minutes of flash drying!