The use of color masterbatch in monofilament extrusion process

Single filament extrusion is mainly made of LDPE, HDPE, LLDPE, PP, and other materials. Although the materials are different, the production process and equipment are basically the same. They are all formed by extrusion plasticization, small holes in the machine head extrusion, initial cooling and shaping, and high magnification stretching.

Due to the different extrusion processes of various resins, when selecting colors, their heat resistance needs to be considered. Due to the small diameter of the single filament, the strength requirement is relatively high. And in the use of fishing net filaments and ropes, high requirements are required for the weather resistance of the color masterbatch. Therefore, it is important to pay close attention to the influence of color masterbatch on the mechanical properties and weather resistance of various types of silk.

What problems may arise in monofilament production and how can they be solved?

Problem 1: Multiple broken ends at the spinneret

Cause: The pigment particles in the color masterbatch are coarse, and there are impurities inside the material.

Solution: 1. Single filament production process: Strengthen the filter screen and replace the material. 2 color masterbatch: Strengthen the dispersion of color masterbatch pigments and select pigments that are prone to dispersion.

Problem 2: There are many broken ends in the hot stretching water tank

Cause of occurrence: Impurities in the color masterbatch, pigment differentiation in the color masterbatch, and high stretching ratio.

Solution: 1. Single filament production process: Reduce the stretching 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 the monofilament

Cause: The moisture content of the color masterbatch is too high, and the extrusion temperature is too high.

Solution: 1. Single filament production process: reduce the extrusion temperature. 2 color masterbatches: Enhance the dryness of color masterbatches.

Question 4: Monofilament with bamboo knots

Cause of occurrence: Color masterbatch pigment particles are filtered through a large filter screen.

Solution: 1. Single filament production process: Replace the filter screen. 2 color masterbatches: Strengthen the dispersion of color masterbatches.

Article source: Taishan conductive mica particles

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