With DayGlo® polymeric colorant technology, you don’t have to worry about warpage, haze or bleed caused by the color component. Proper crystallization of CPP parts is a critical factor for molders to ensure optimum clarity, uniform shrinkage & desired cycle time. Gem-Tone colorants do not alter the thermal behavior of the CPP part.
There are essentially no differences in thermal behavior of the colored and clear PP resins at 0.1% colorant level, indicating that GC colorants at this loading have virtually no effect on the crystallization behavior of the clarified PP. Higher loadings, though not tested, are not anticipated to affect crystallization behavior.
Unlike pigments or other insoluble colorants sometimes used in CPP parts, Gem-Tone colorants don't scatter light to impart haze. Gem-Tone Colorants provide a method for delivering the advantages of dye coloration to polyolefins without the problems of migration or extraction. As a dye based system, Gem-Tones give good clarity in clarified PP and demonstrate shrinkage typical of other polymeric dye systems. Finally, as an amorphous, resinous solid, the Gem-Tones are easy to handle and incorporate into polyolefins by typical processing techniques.