I. Client Background
The client is a UK-based elevator manufacturer specializing in passenger elevators, commercial elevators, and related components. As requirements for aesthetic quality, surface durability, and overall decorative finish have risen, the client sought a reliable powder coating supplier to provide professional surface coating solutions for elevator cabins, door panels, and metal accessories.
Previous powder coatings used by the client had issues regarding color consistency, surface leveling, and coating wear resistance during the application process. Consequently, the client aimed to improve the overall coating finish through more suitable powder coating products and optimized application processes.
II. Client Requirements
Based on the structural characteristics and operational environments of the elevator products, the client established the following requirements for the powder coatings:
1. Excellent Decorative Finish
As elevators are high-traffic public facilities, the client required a coating with a uniform, smooth surface finish, along with consistent color and gloss.
2. Superior Adhesion
The powder coating must bond effectively with common metal substrates—such as steel and galvanized sheets—to prevent issues like peeling or blistering during use.
3. Good Wear Resistance
Elevator door panels, cabins, and other components are subject to frequent contact and friction; therefore, the coating requires high resistance to wear and scratching.
4. Good Corrosion Resistance
Elevator equipment is designed for long-term use; the coating must offer excellent corrosion resistance to provide lasting protection for the metal substrate.
5. Consistent Application Performance
For large metal components like door panels and cabin wall panels, the powder requires excellent leveling and coverage capabilities to minimize surface defects such as "orange peel" and pinholes.
6. Consistent Batch Quality
Given the need for continuous mass production, the client required high consistency regarding color, gloss, particle size, and curing performance.
III. Our Solution
Based on the client's product types, metal substrates, operating environments, and application processes, our technical team developed a tailored powder coating solution specifically for their elevator products. First, we matched the powder coating systems, colors, and surface finishes to the specific application requirements of elevator cabins, door panels, and metal components, adjusting the color and finish based on samples provided by the client.
To meet the client's surface quality standards, we focused on optimizing the powder coating's flow, coverage, and curing properties, ensuring the formation of a uniform, continuous coating on the metal surfaces.
Additionally, we provided process recommendations tailored to the client's spraying equipment and production conditions, covering:
- Pre-treatment of metal substrates
- Adjustment of electrostatic spraying parameters
- Control of the distance between the spray gun and the workpiece
- Film thickness control
- Curing temperature and duration
- Optimization of spraying methods for components with varying geometries
For large-surface components such as elevator door panels and cabin wall panels, we paid special attention to film thickness uniformity and surface flow, helping the client minimize color variations and surface defects caused by unstable spraying parameters.
IV. Cooperation Results
Following sample testing, color validation, and adjustments to the spraying process, the elevator powder coatings we supplied delivered excellent results on the client's products.
The coating surface is uniform and smooth, with consistent color and gloss. It also exhibits excellent adhesion, wear resistance, and corrosion resistance, effectively meeting the decorative and protective requirements for elevator cabins, door panels, and related metal components.
After multiple rounds of sample testing and technical consultations, the client approved the product performance and color results, subsequently adopting our powder coatings for the production of their elevator products.
This collaboration helped the client improve the overall coating quality of their elevator metal components and enhanced consistency in color and surface quality during mass production. Through product customization, sample testing, and technical support, we established a more stable powder coating application solution for the UK client.
