Product	Color Masterbatch
Applications	Blown Film | Injection Molding
Polymer Base	PE

 

1. Background & Customer Challenge

During blown film and injection molding production, the customer encountered color migration issues after processing. After mixing and processing, the color did not remain stable; it showed signs of migration, uneven distribution and impact on product appearance.

This made quality control more difficult, especially for products requiring stable and uniform color across production batches. During operation, color migration could also lead to color deviation between different areas or between products.

Based on the customer’s actual requirement, the objective was to improve the color masterbatch to enhance color stability, reduce color migration and ensure more uniform color distribution in both blown film and injection molding processes.

2. Dai A Solution

After receiving the request and analyzing the actual product condition, Dai A’s technical team conducted research, evaluation and adjustment to develop a color masterbatch solution suitable for both blown film and injection molding processes.

Dai A approached the challenge by evaluating the overall interaction between color masterbatch, base resin, processing conditions, blown film/injection molding process and finished product appearance requirements.

• Improve color dispersion in the polymer base.
• Reduce color migration during processing.
• Increase color uniformity on products after blown film and injection molding.
• Improve color stability under actual processing conditions.
• Optimize the solution based on each resin base and the customer’s operating conditions.

3. Testing & Refinement

The improvement process followed the sequence: analyze actual defects, identify root causes, adjust the solution, conduct trial runs, evaluate dispersion and color migration, refine the formulation and confirm performance under real production conditions.

The improved sample was evaluated based on color uniformity, color dispersion in the base resin, the level of color migration after processing, color stability during blown film and injection molding, and the appearance of the finished product.

Through testing and refinement, the solution was finalized to meet the required color stability and color migration control across different processing conditions.

4. Practical Applications

The improved color masterbatch is used in two main processing technologies: blown film and injection molding.

For blown film, the color masterbatch is blended with the base resin and processed into film. The key requirement is stable color dispersion, reduced color migration and uniform color across the finished film.

For injection molding, the color masterbatch is blended with the base resin before molding. The solution aims to reduce color migration during processing while maintaining stable and uniform color on the molded product.

After improvement, the solution was evaluated under both blown film and injection molding conditions, helping improve color stability and reduce the risk of appearance defects caused by color migration.

5. Results & Benefits

After research, testing and adjustment, the improved color masterbatch solution delivered the following benefits:

• Reduced color migration during processing.
• Improved color uniformity on film and injection-molded products.
• Improved color dispersion in the polymer base.
• More stable color during blown film and injection molding.
• Improved finished product appearance.
• More convenient production with lower risk of color-related defects.

6. Customer Value

The improvement solution helps customers address color migration in both blown film and injection molding while improving color stability during production.

Better dispersion and color stability help customers improve product uniformity, reduce appearance defects caused by uneven color distribution, shorten material adjustment time during production and control color consistency between batches.

For Dai A, this case demonstrates the ability to develop and optimize color masterbatch according to each processing method, from blown film to injection molding, rather than evaluating the product only at the raw material level.

7. Conclusion

From the challenge of color migration in blown film and injection molding, Dai A researched and improved the color masterbatch solution to enhance dispersion, color stability and migration control during processing.

The solution helps improve color uniformity, finished product appearance and production stability, meeting the actual requirements of each application.

If your business is facing issues such as color migration, uneven color, poor dispersion or unstable color in blown film and injection molding, Dai A’s technical team can support you from root-cause analysis and sample development to testing, optimization and confirmation under real production conditions.