Preparation method of ultra-high molecular weight polyethylene monofilament knotted fishing net
A technology of ultra-high molecular weight and polyethylene, applied in the direction of single-component polyolefin artificial filament, knotted netting, knotting, etc., can solve the problem of high price of knotless fishing net weaving machines, low fiber strength utilization rate, fiber strength Large loss and other problems, to reduce the possibility of large algae outbreaks, increase the service life, improve the effect of nodule strength
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Embodiment 1
[0028] The ultra-high molecular weight polyethylene raw material is melted and extruded by a special melt extruder, the extruder is a capillary extruder, and the capillary diameter is: 2mm.
[0029] The extruded melt is cooled in a water tank with a length of 1 m and a temperature of 20-35 °C, and is pre-stretched by 2 times under the action of a pulling roller.
[0030] The spun yarn formed by cooling enters the drawing machine. The primary stretching temperature is 85°C, the stretching ratio is 15, the secondary stretching temperature is 100 °C, the stretching ratio is 3, and the tertiary stretching temperature is 110 °C. , the stretching ratio is 2, the stretched monofilament is entered into the shaping machine for shaping, the shaping temperature is 90 ° C, and the shrinkage rate is 1% to 3%, so as to obtain the ultra-high molecular weight polyethylene monofilament with a diameter of 0.4mm. .
[0031] The shaped monofilament fibers are wound on a winder, the winding tensi...
Embodiment 2
[0036] The ultra-high molecular weight polyethylene raw material is melted and extruded by a special melt extruder. The extruder is a capillary extruder, and the capillary diameter is: 3mm.
[0037] The extruded melt is cooled in a water tank with a length of 1 m and a temperature of 20-35 °C, and is pre-stretched by 2 times under the action of a pulling roller. The spun yarn formed by cooling enters the drawing machine. The primary stretching temperature is 85 °C, the stretching ratio is 15, the secondary stretching temperature is 105 °C, the stretching ratio is 2.5, and the tertiary stretching temperature is 115 °C. , and the draw ratio is 1.5, so that the ultra-high molecular weight polyethylene monofilament with a diameter of 0.8 mm is obtained.
[0038] The shaped monofilament fibers are wound on a winder, the winding tension is 150N, and the winding speed is 20-30m / min.
[0039] The reeled monofilament is woven into a fishing net on a knotted net loom with a mesh size o...
Embodiment 3
[0043] The ultra-high molecular weight polyethylene raw material is melted and extruded by a special melt extruder, the extruder is a capillary extruder, and the capillary diameter is: 4mm.
[0044] The extruded melt is cooled in a water tank with a length of 1 m and a temperature of 20-35 °C, and is pre-stretched by 2 times under the action of a pulling roller. The spun yarn formed by cooling enters the drawing machine. The primary stretching temperature is 95°C, the stretching ratio is 15, the secondary stretching temperature is 110 °C, the stretching ratio is 2.5, and the tertiary stretching temperature is 120 °C. , and the draw ratio is 1.5, so that the ultra-high molecular weight polyethylene monofilament with a diameter of 0.8 mm is obtained.
[0045] The shaped monofilament fibers are wound on a winder, the winding tension is 150N, and the winding speed is 20-30m / min.
[0046] The reeled monofilament is woven into a fishing net on a knotted net loom with a mesh size of...
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