Special Powder Coating for Coil and Pre Coating Plate

Surface Finish Options Overview

Product Characteristic:

Special powder coatings for coil and pre coating plate is not only with simple construction,excellent appearance and one-step coating,but also easy to install and transport. Compared with the solvent coating for coil,it is with high usage,anti-scratch performance and environmental-friendly, no VOC exhaust, energy-saving, doesn’t need the roller coating and be cleaning,has advantages of extraordinary T-bend and MEK at the meantime.

1.Special powder coatings for steel coil and color pre coating plates are not easy to scratch and can guarantee good leveling performance under thin coating. This product is not only with excellent weatherability, extraordinary T-bend, anti-scratch performance,but also with brilliant resistance of organic solvent.

2.Special powder coatings for aluminum coil and color pre coating plate which with good leveling, excellent salt spray resistance performance, extraordinary T-bend and anti-curing performance, also has brilliant T-bend and impact performance even after low-temperature impact.

Product Application:

1.It can be applied in coil color pre coating plate including steel&aluminum coil color pre coating plate.

2.It can be designed to be 30m/min-100m/min fast spraying speed according to your requirements.

3.We can design the smooth, wrinkle, orange peel texture, sand texture, snowflake texture and silver powder etc according client’s requirements.

Application Range:

For its convenient application,high intensity, easy to clean and anti-impact performance etc, our product can be applied to steel coils and pre coating plate, for example, plant, house building precast piece, roof, wall,retail booth,container,isolated column,counter and door frame etc.

This product is also suitable for high decorative hardware surface coating for outdoor high-end metal furniture, industrial electric application, metal craftwork, lockset and audio etc.

FAQ

1. What is Powder Coating?

Powder coating is a dry finishing process used to apply a protective and decorative coating on metal or other surfaces. Instead of using liquid paint, fine powder particles (usually made of polyester, epoxy, or hybrid resins) are electrostatically charged and sprayed onto a conductive surface. The coated object is then baked in an oven, where the powder melts, flows, and cures into a smooth, durable finish.

Key features:

Durable, hard finish

Resistant to scratches, corrosion, and UV

Environmentally friendly (no VOCs)

2. Benefits of Powder Coating

Powder coating offers several advantages over traditional liquid painting:

Durability: Resistant to chipping, scratching, fading, and wear.

Corrosion Protection: Provides excellent protection against rust and chemicals.

Environmentally Friendly: No volatile organic compounds (VOCs) and minimal waste.

Efficiency: Overspray can be collected and reused, up to 99% material utilization.

Uniform Finish: Smooth, even coating without runs or drips.

Cost-Effective: Single-coat systems can achieve high film thickness, reducing labor and energy.

Aesthetic Variety: Wide range of colors, textures, and effects.

3. What Temperature to Cure Powder Coating

The curing temperature depends on the type of powder used:

Epoxy powder: ~160–200°C (320–392°F)

Polyester powder: ~180–210°C (356–410°F)

Hybrid (Epoxy-Polyester) powder: ~180–200°C (356–392°F)

Typical curing time: 10–20 minutes depending on thickness and oven type.

Always follow the powder manufacturer’s specifications for best results.

4. Process for Powder Coating

The powder coating process usually follows these steps:

Surface Preparation:

Clean the surface thoroughly (remove oil, grease, rust, or dirt)

Methods: chemical cleaning, sandblasting, or phosphating

Pre-Treatment:

Apply a conversion coating or primer if needed to improve adhesion

Powder Application:

Spray the powder using an electrostatic spray gun or fluidized bed

Curing:

Bake the coated object in an oven at the recommended temperature for the powder type

The powder melts and forms a continuous, smooth film

Cooling & Inspection:

Let the coated item cool

Inspect for defects, uniform coverage, and desired thickness

5. How to Spray Powder Coat

Equipment Needed:

Electrostatic spray gun

Compressed air supply

Powder feed hopper or container

Grounding of the object

Steps:

Ground the object: Ensures the charged powder is attracted to the surface.

Spray evenly: Hold the gun 6–12 inches from the surface, moving in smooth, overlapping strokes.

Apply sufficient powder: Ensure full coverage without excessive buildup.

Cure immediately: Transfer the sprayed item to the curing oven to fuse the powder into a solid coating.

Tips:

Maintain consistent speed and distance while spraying.

Use proper ventilation to reduce airborne powder accumulation.

Test a small area to check film thickness and color before full application.