Carton packaging, lined with two layers of PVC plastic bags, net weight of each box is 20kg. Non-hazardous items can be transported in various ways, but should be kept away from direct sunlight, moisture and heat, and contact with chemicals.
Applicable to household appliances, tableware, food processing machinery, toys, stationery, sports equipment, etc. that come into contact with food.
Operators should wear dust masks during use to avoid inhaling dust, and minimize long-term contact between skin and powder coating. Paint attached to the skin can be washed with soap.
| Test items | Inspection standard or method | Inspection index |
| Appearance | Visual | Coating uniform, no burrs, bubbles and other defects |
| Film thickness | GB/T 1764 | >60 μm |
| Adhesion | GB/T 9286 | Level 0 |
| Impact | GB/T1732 | ≥50Kg·cm |
| Neutral salt spray resistance | GB/T 1771 | 500h; Stroke area: unidirectional rust ≤2.0mm; Unstrike area: no abnormality |
| Acid resistance | GB/T9274 | 300h no smearing, no spots, slight discoloration allowed |
| Alkali resistance | GB/T9274 | 200h no smearing, slight discoloration allowed |
| Bending | GB/T 6742 | ≤3mm |
| Wet and hot resistance | GB/T1740 | 500h no abnormality |
| Soluble lead (mg/kg) ≤ | GB 18581 | 90 |
| Soluble chromium (mg/kg) ≤ | GB 18581 | 60 |
| Soluble cadmium (mg/kg) ≤ | GB 18581 | 75 |
| Soluble mercury (mg/kg) ≤ | GB 18581 | 60 |
| Total mobility/(mg/mch2) ≤ | USFDA21CFR175.300 | 10 |
| Curing conditions | 180℃/15min | |
| Test items | Inspection standard or method | Inspection index |
| Appearance | Visual | Coating uniform, no burrs, bubbles and other defects |
| Film thickness | GB/T 1764 | ≥60 μm |
| Adhesion | GB/T 9286 | Level 0 |
| Impact | GB/T1732 | ≥50Kg·cm |
| Neutral salt spray resistance | GB/T 1771 | 500h; Scribed area: unidirectional rust ≤2.0mm; Unscribed area: no abnormality |
| Acid resistance | GB/T9274 | 500h; No smearing, no spots, slight discoloration allowed |
| Alkali resistance | GB/T9274 | 200h; No smearing, slight discoloration allowed |
| Bending | GB/T 6742 | ≤3mm |
| Cupping | GB/T 9753 | ≥6mm |
| Wet and hot resistance | GB/T1740 | 500h No abnormality |
| Soluble lead (mg/kg) ≤ | GB 18581 | 90 |
| Soluble chromium (mg/kg) ≤ | ;B18581 | 60 |
| Soluble cadmium (mg/kg) ≤ | GB 18581 | 75 |
| Soluble mercury (mg/kg) ≤ | GB 18581 | 60 |
| Total mobility/(mg/mch2 ) ≤ | USFDA21CFR175.300 | 10 |
| Artificial weathering resistance | GB/T 1865 | 800h; Discoloration ≤2 level; Gloss loss ≤2 level |
| Curing conditions | 190℃/15min | |
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 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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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