1. When mixing with the original color slices, pay special attention to the problem of static electricity, avoid separating the masterbatch to make the color mixing uneven, and make the masterbatch attached to the hopper wall.

2. Pay attention to the moisture content of the masterbatch. If the moisture content is high, the color content of the same masterbatch may fluctuate. Generally, the water content of less than 0.3% will not affect the spinnability.

3. The color of the fiber determines the coloring attempt or dilution ratio. The dilution ratios of masterbatches of different concentrations are different. For high-concentration masterbatches, pay attention to the uniformity of fiber color due to the large dilution ratio.

4. When selecting color masterbatch, it should be noted that it may react with other additives in the spinning solution. First, it cannot play the role of additives to maintain the physical and mechanical properties of the fiber; second, it reduces the coloring effect of the masterbatch.

5. Pay attention to the diffusibility of masterbatch when spinning.