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Application of color masterbatch in monofilament extrusion process

Issuing time:2022-03-23 13:53
Monofilament extrusion takes LDPE, HDPE, LLDPE, PP, etc. as the main raw materials. Although the raw materials are different, the production process and production equipment are basically the same. They are all extruded through the small hole of the die after extrusion plasticization, and then stretched by high multiple after preliminary cooling and shaping.

  

Monofilament extrusion takes LDPE, HDPE, LLDPE, PP, etc. as the main raw materials. Although the raw materials are different, the production process and production equipment are basically the same. They are all extruded through the small hole of the die after extrusion plasticization, and then stretched by high multiple after preliminary cooling and shaping.

Due to the different extrusion processes of various resins, the heat resistance should be considered when selecting the color. The monofilament diameter is relatively small and the strength requirement is relatively high. Moreover, in the application of fishing net wire and rope, color masterbatch is required to have high requirements for climate resistance. Therefore, we should pay close attention to the influence of color masterbatch on the mechanical properties and weather resistance of various filaments.

What problems will appear in monofilament production and how to solve them?

Problem 1: there are many broken ends at the spinneret

Causes: the pigment particles in the color masterbatch are coarse, and there are impurities in the raw materials.

Solution: 1. Monofilament production process: strengthen the filter screen and exchange raw materials. 2 Color Masterbatch: strengthen the dispersion of Color Masterbatch pigments and select pigments that are easy to disperse.

Problem 2: there are many broken ends in the heat drawing water tank

Cause: there are impurities in the color masterbatch, the pigment of the color masterbatch decomposes, and the stretching ratio is too high.

Solution: 1. Monofilament production process: reduce the drawing speed. 2 Color Masterbatch: strengthen the filtration in the production of color masterbatch and select pigments with good heat resistance.

Problem 3: there are bubbles on the surface of monofilament

Causes: the water content of color masterbatch is too high and the extrusion temperature is too high.

Solution: 1. Monofilament production process: reduce the extrusion temperature. 2 Color Masterbatch: strengthen the drying of color masterbatch.

Question 4: monofilament with slub silk

Cause: large filter screen of Color Masterbatch pigment particles.

Solution: 1. Monofilament production process: change the filter screen. 2 Color Masterbatch: strengthen the dispersion of color masterbatch.

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