Post-forming powder coatings

Surface Finish Options Overview

Introduction

Chemical Type: Epoxy/Polyester or Pure Polyester

Appearance: Depends on specific product

Curing Conditions (Workpiece Temperature): 200℃: /5min Improper curing may result in loss of color, gloss, and coating performance.

Gloss: Depends on specific product

Storage Conditions: Store in a cool, dry place, sealed, <30℃

Shelf Life: 6 months (<30℃), 12 months (<25℃)

1. Excellent bending flexibility, passes 0T test.

2. Can achieve rapid curing within 5 minutes.

3. Rich and varied colors, with glossy/matte/sandblasted/textured finishes and effects to choose from.

4. Revolutionizes traditional processing techniques, creating value for customers.

Application

The post-forming powder coating series is suitable for products that require secondary processing such as stamping, bending and stretching after baking and curing of boards, profiles, preforms or semi-finished products. It has extremely high requirements for flexibility and can be widely used in the building materials industry, IT industry, home appliance industry and door and window industry.

Features

Technical indicators

Note: Substrate and pretreatment: Mechanical property testing used 0.6mm thick degreased cold-rolled steel sheet; corrosion aging resistance testing used 0.6mm thick zinc-based phosphated steel sheet or chromated aluminum sheet.

• Film thickness: 60-80μm
• Curing conditions: 200℃/5min (workpiece temperature)

Construction Reference

Manual or automatic spraying equipment can be used, ensuring a clean air source.

Atomizing air pressure: ~0.7 bar

Primary air pressure: ~0.7 bar

Recommended voltage: 40~90kV

Safety warning: When using spraying equipment, ensure proper ventilation and dust collection systems are functioning correctly. Workers must take appropriate protective measures and wear suitable protective equipment. For more detailed information, please refer to the safety information sheet for the corresponding product.

Types of powder coating

Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).

Powder coating colours and effects

Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.

Powder coating process

The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.

Powder coating benefits

Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.

Applications for Powder Coatings

Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.

FAQ

What is Powder Coating?

Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.

What does powder coating do?

Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.

Is powder coating better than paint?

In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.

Why is it called powder coating?

It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.

What are the different types of powder coating?

Powder coatings include several families depending on resin chemistry:

• Epoxy powders

• Polyester powders

• Epoxy-polyester hybrid powders

• Polyurethane powders

• Acrylic powders

• Fluorocarbon (PVDF) powders

Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.

Which material is used in powder coating?

Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.

How long will powder coating last?

The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.