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| MOQ; | MOQ100KG，From China |
| Feature | Powder Coating & Surface Finishing Solutions |
| Classification | Powder Coating |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Description | Powder coating | |
| Another Name | Powder paint,Electrostatic powder coating, thermosetting powder coating | |
| Type | Epoxy polyester resin series | |
| Main Material | Epoxy resin,polyester resin, and hardner | |
| Advantage | Good adhesion,good mechanical property,strong coating film, | |
| excellent insulation,anticorrosion,energy-efficient,convenient operation. | ||
| Application Field | Apply to indoor use | |
| Household appliance:air conditioner indoor unit,fan,radiator, | ||
| kettle,lighting sets, refrigerator,TV set,kitchen ventilator, | ||
| disinfection cabinet,electric cooker,etc. | ||
| Daily use:Knife,fork,crafts,ornament,etc. | ||
| Indoor furniture:table,chair,cupboard, | ||
| safe,carved iron bed,door,curtain,etc. | ||
| Application Condition | Electrostatic spray/Triboelectric gun spray. | |
| Recommended curing condition:190℃/15min | ||
| (object surface temperature),range from 190 degree centigrade | ||
| for 20 minutes to 210 degree centigrade for 8minutes. | ||
| Recommended film thickness:50~80um, range from 40~150um | ||
| Physical Property | Specific gravity | 1.4~1.8g/cm3 as per formula and color |
| Particle size | average 35~40um | |
| Test Condition | Substrate | 0.5mm thickness cold rolled steel sheet |
| Pretreatment | Remove rust and grease | |
| Film thickness | 50~80um | |
| Curing temperature | 190℃/15min | |
| Mechanical Property | Pencil hardness | ISO 15184-1998:Null |
| Adhesion (by griding) | GB/T 9286-1998:≤2 grade | |
| Impact test | GB/T 1732-1993:≥25 kg.cm | |
| Bending test | GB/T 6742 :≤4mm | |
| Cupping test | GB/T 9753:Null | |
| Chemical and Durability Test | Salt spray test | GB/T 1771.≥500 hours,no obvious change , |
| crossion width at cross≤2mm | ||
| Humidity test | GB/T 1740.≥500 hours,no change | |
| Package | Inside by PE bag,outside by carton,net weight 25kg/carton | |
| Storage Condition | Store in dry ventilated room,temperature under 35 degree centigrade, | |
| avoid direct sunlight. | ||
| Shelf Life | Six months | |
| Health and Safty | Raw material of powder coating don’t contain toxic substance, | |
| no toxic gas produced during curing.Please wear dust mask in operation | ||
| to avoid inhelation of powder.Please avoide prolonged skin contact | ||
| with powder,wash out powder with soap and water. | ||
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)
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.
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.
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
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.
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