1. Core advantages of organic pigments in plastic coloring

Organic pigments have become the first choice for plastic coloring because of their bright colors, strong coloring power and wide color spectrum. Compared with inorganic pigments, organic pigments perform better in transparency and color saturation and are suitable for various plastic products, such as packaging materials, toys, home appliance housings and automotive parts. In addition, organic pigments can improve dispersibility through surface modification to meet the needs of different processing technologies.

2. Key challenges in plastic coloring

Despite the superior performance of organic pigments, the following problems still need to be solved in practical applications:
Dispersion stability: Pigments are easy to agglomerate, resulting in color spots or reduced strength of plastic products.
Temperature resistance: Some organic pigments may decompose during high-temperature processing (such as injection molding, extrusion), affecting the final color.
Migration resistance: Small molecule pigments may seep out, contaminate contact objects or affect the appearance of products.

3. Optimization scheme: Application of water-based resin

To improve the dispersibility of organic pigments, STD water-based polyurethane resin can be used as an ideal pigment carrier. Its excellent film-forming property and flexibility can effectively improve the dispersibility of organic pigments in plastic substrates (such as PP, ABS, TPU) and reduce agglomeration problems. It is particularly suitable for flexible plastic products such as soft packaging and shoe materials, while enhancing the adhesion of pigments to the substrate to avoid shedding or fading.

4. Surface treatment optimization solution

For plastic products that require special surface properties, the STD series of water-based glass ceramic glazes provides a perfect solution. By spraying on the surface of plastic products, a dense protective layer can be formed, which significantly improves the scratch resistance, weather resistance and surface gloss of the products. This treatment method is particularly suitable for application scenarios such as automotive interiors and home appliance panels that require high surface properties.

5. Typical application cases

Toys and food packaging: Organic pigments are used in combination with water-based resin systems to ensure bright colors and meet food safety standards.
Outdoor building materials: After special surface treatment, the product has excellent UV resistance and anti-fouling properties.
Electronic housing: By optimizing the coloring process, a variety of surface effects can be achieved to increase product added value.

Organic pigments provide a rich selection of colors for plastic products. Combined with advanced water-based resins and surface treatment technologies, they can comprehensively improve the performance and appearance quality of products and meet the dual requirements of modern industry for environmental protection and high performance.