Adding Safe Colors to Medical Packaging
In the field of pharmaceutical packaging, plastic caps not only serve the critical function of sealing medications and preserving efficacy, but their appearance and color also play a vital role in drug identification, classification, and brand building. Pharmaceutical-grade color masterbatch for plastic caps, as the core material for achieving precise coloration, is driving the development and innovation of the medical packaging industry with its outstanding performance and stringent quality standards.
1. **Heat Resistance**: Capable of withstanding high temperatures during plastic cap processing. For example, the injection molding temperature for PP plastic caps typically ranges between 180–230°C. The color masterbatch maintains stable chemical structure within this temperature range, without decomposition or discoloration, ensuring consistent color across every batch of plastic caps.
2. **Light and Weather Resistance**: Withstands UV aging tests (e.g., xenon lamp exposure for 500 hours), with a color difference ΔE ≤ 2.0. Effectively resists changes caused by light, temperature, and humidity, preventing fading during long-term storage and use, thereby maintaining the visual recognition of pharmaceutical packaging.
