When the color problem is really a material-system problem.

The finished part showed occasional brittle-crack rejects—an intermittent quality problem that could not be explained by shade alone.

The pigment system and the PA resin were not working together well enough. Their physical-property mismatch and the formulation balance were contributing to molding stress.

We re-matched pigment physical properties to the PA resin system and rebalanced the masterbatch for better compatibility and lower molding stress.

A color that looked acceptable during sampling became greyish and dull in mass production.

The flame-retardant package was interacting with the color system and causing color loss, reducing saturation and perceived brightness.

We developed a dedicated flame-retardant-compatible formulation with stronger hiding power and improved color fastness.

During development, the electrical plastic part yellowed and the target color began to decompose at the required process conditions.

The original color system did not have sufficient thermal stability for the heat history of the polymer and molding process.

We selected a dedicated high-temperature pigment system and reformulated around processing at approximately 300°C.

A bright PA part showed migration and fading after high-temperature processing and a 2-hour boiling-water test.

Testing traced the failure to pigment decomposition under heat, followed by instability during boiling-water exposure.

We optimized the pigment-additive system to improve thermal stability and keep the colorant inside the polymer system.

Black spots kept appearing on a home-appliance housing after injection molding, preventing visually acceptable mass production.

Because the defect could arise from material, contamination or process history, the source had to be screened step by step.

We worked through process variables in sequence and optimized the source responsible for black-spot formation.