[在生产过程中,色母粒的使用要点有什么?]
Release date:[2020/9/2] Read a total of[152]time

(1) When choosing a masterbatch, it should be selected according to the range of selection. Polypropylene masterbatch has fine denier and coarse denier grades. Coarse denier masterbatch colors cannot be used for denier color matching. Spinning should be considered when matching colors. For fiber denier per filament, choose the same grade masterbatch.

(2) The masterbatch selected should be the product of the same manufacturer, and high-concentration masterbatch should be used to reduce costs. The pigments of masterbatch are divided into high, medium and low grades. When matching colors, different grades of masterbatches should be appropriately selected according to the quality requirements of fiber formation. In order to avoid the quality variation of the finished fiber caused by the different light and heat stability of the pigment, the color of the masterbatch that meets the fiber quality requirements and has the same light and heat stability level should be selected when matching the color, and the concentration of the thick fiber is higher than that of the thin fiber. Low, its masterbatch application ratio is proportional to the square root of the denier.

(3) In order to reduce the color difference of the fiber after color matching, the masterbatch should be diluted and the mixing ratio should be controlled. The filament is not less than 3% to 10%, the short fiber is not less than 1% to 3%, and the monochromatic bulk is continuously long. The silk is spun with three-color equipment, and the masterbatch must be fed into the extruder after mixing. At the same time, in order to increase the mixing capacity of the melt itself, a mixing device can be added in the extruder section.

(4) Masterbatch mixing method After the color formula of the yarn is determined, evenly dispersing the masterbatch in the polypropylene fiber slices before spinning is the key to ensuring product quality. There are two specific mixing methods. One is the heavy method and the volume method. After the masterbatch is melted in the extruder or at the back, it is injected into the polypropylene melt with a small extruder, with good uniformity. There are five kinds of masterbatch injection devices available in China, namely, the variable method and Y-mixer interval color matching of Hercules, Germany; the volumetric metering and mixing color matching one-step method of Colotronic, Germany; and the auxiliary small screw melt metering of Barmag, Germany Injection method; variable method small screw solid continuous metering and mixing color matching one-step method of Moclene Company in Italy; LWF loss-in-weight feeding continuous metering and color matching of Swiss craftsman and mixed color.


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