Common Bronze Pigment Powder | Bronze Powder
|
Grade |
Shades |
D50 Value (μm) |
Water Coverage(cm2/g) |
Application |
|
300mesh |
Pale gold |
30.0-40.0 |
≥ 1800 |
Printing with bright and brilliant metallic effect. Coarse series for dusting, gold paint, textile printing, and screen. |
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Rich gold |
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400mesh |
Pale gold |
20.0-30.0 |
≥ 3000 |
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Rich gold |
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600mesh |
Pale gold |
12.0-20.0 |
≥ 5000 |
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Rich gold |
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800mesh |
Pale gold |
7.0-12.0 |
≥ 4500 |
Suit for gravure printing offset printing and letter press so on according to different request of particle size. |
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Rich pale gold |
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Rich gold |
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1000mesh |
Pale gold |
≤ 7.0 |
≥ 5700 |
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Rich pale gold |
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Rich gold |
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1200mesh |
Pale gold |
≤ 6.0 |
≥ 8000 |
Suit for all kind of printing and being making gold ink, with good covering powder and print adaption. |
|
Rich pale gold |
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Rich gold |
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Gravure powder |
Pale gold |
7.0-11.0 |
≥ 7000 |
Suit for gravure printing, the gloss, covering powder and metallic effect can reach ideal. |
|
Rich gold |
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Offset Powder |
Pale gold |
3.0-5.0 |
≥ 9000 |
Rated as ink grade with extra covering powder, transfer, and can make ideal effect for press work. |
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Rich gold |
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Gravure stripes |
Pale gold |
Further made on base of Gravure |
Extra gloss. Very high covering powder and good print ability and no dust caused. |
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Rich gold |
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Special grade |
/ |
≤ 80 |
≥ 600 |
Made upon request of customers. |
|
≤ 70 |
1000-1500 |
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≤ 60 |
1500-2000 |
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- 1.Bronze Powder and forming of hue
According to different composition, the copper alloy surface can show scarlet, gold, white or even purple. The different zinc contents make the bronze powder different hue. Containing zinc is less than 10% produce pale gold effect, called pale gold; 10%-25% produce rich light golden effect, called rich pale gold; 25%-30% produce rich light golden effect, called rich gold.
- 2.Micro-structure and particle size distribution of bronze powder
The bronze powder particles are flaky texture, under the observation of scanning electron microscopy, the flakes most are irregular, and its edges are zigzag shape, some a few is relatively regular circle. This particle structure makes it can arranged parallel with the painted objects.
- 3.Bronze powder optical properties
The bronze powder has the angle-following color dissimulation effect, it is relate to the smoothness of the metal surface. The Micro-structure, coating thickness and particle size distribution all plays a vital role to influence the glossiness of printing gold.
- 1.Bronze Powder has good float ability, and the float ability will decrease if add to any wetting agent or dispersing agent.
- 2.If want to adjust the float ability or Bronze Powder, can decrease the float ability properly (add 0.1-0.5% citric acid), but it will reduce the metallic effect.
- 3.If adjust the applicable viscosity and drying time cannot achieve ideal optical effect (the Bronze Powder particles do not well directional arranged), can add a few surface lubricant and leveling agent.
- 4.Generally, Bronze Powder has good re-dispersion. Once precipitated, can add some anti-settling agent or thixotropic agent (< 2.0%), like bentonite or fumed silica, etc.
- 5.The Bronze Powder and its products should be stored in a dry place at room temperature. Close the drum’s cover of Bronze Powder soon after using it, in case of oxidative deterioration.