Advantages of water electret meltblown fabrics
The technology of water electret melt blown fabrics originated from the United States, which is different from the traditional process in that the traditional melt blown fabrics uses corona electret, which shows obvious stability and comprehensive benefits, but the filtration efficiency storage will be reduced with time, and the static potential of material surface will be attenuated; and the water electret melt blown fabrics is to transport the prepared pure water through high-pressure water pump To the nozzle, the fan-shaped nozzle is used to spray the melt blown cloth, which makes the water molecules and cloth produce friction and generate static electricity; the advantages of this process are high filtration efficiency, strong static persistence and low ventilation resistance.
High filtration efficiency
The performance of water electret melt blown fabrics is saturated with static electricity. The charging method of water electrostatic electret can pass the oil and salt test of 8130 model. According to the quality of grey cloth, it can easily reach P2 (filtration efficiency 95% +) or P3 (filtration efficiency 99% +);
Electrostatic persistence
After aging resistance and loading test, the water electret melt blown fabrics can still achieve high filtration efficiency, which can be maintained for more than 2 years. Therefore, the water standing technology effectively solves the problem that the electric electret of the mask melt blown cloth is not durable.
Ventilation resistance is small
When the high pressure water molecules penetrate the meltblown cloth, the internal texture of the cloth is combed again, which reduces the ventilation resistance of the cloth by 5% - 30%. That is to say, while reducing the resistance, the filtration efficiency is improved.
Production process
1. Constant tension unwinding
Double position placement,
Constant tension system,
Speed synchronization control
2. Spunlace
Pure water preparation: select tap water as the source of water, and complete the preparation of pure water through industrial pure water equipment, with high requirements for conductivity, less than 0.5 μ s.
Water electret process: the prepared pure water is transported to the fan-shaped nozzle through the high-pressure water pump. The fan-shaped nozzle spurs the melt blown cloth, and generates electric charge through friction between the two to complete the spunlace electret.
3. Drying
The energy consumption of the oven is about 80 kW, and the drying efficiency is 50% higher than that of the traditional oven, and the output is 50% higher than that of the traditional oven.
4. Automatic rewinding / slitting
The machine can automatically record rice and turn over the transfer shaft, cut cloth automatically, integrated PLC control, constant tension control, one key speed regulation of the whole line, and synchronous control of the running speed of unwinding, spunlace and oven.
Main equipment parameters
Industrial pure water machine 4T
Actual water consumption: 2-3 tons / hour
Tap water is selected as the water source. The water source is filtered by sand and gravel tank and activated carbon. Reverse osmosis agent and hydrochloric acid are added to the filtered water source. The water source is filtered by reverse osmosis membrane and basic industrial reagent is added to the filtered water source to complete the preparation of pure water
5 μ s.
High pressure spunlace (inlet nozzle)
Two or one spunlace can be customized
Water electret process: the prepared pure water is delivered to the fan-shaped nozzle with specific pressure through the high-pressure water pump. The fan-shaped nozzle spurs the melt blown cloth and generates electric charge through friction between the two to complete the spunlace electret.
The advantages of this process are high filtration efficiency, strong electrostatic persistence and low ventilation resistance.
Horizontal oven
It has a single node of 6m, a width of 2.2m and a height of 2.5m
Power: 180kW,
Upper and lower circulation air duct, heat energy recycling use. Compared with the traditional horizontal oven, the drying effect and energy consumption are greatly improved, and the output is more than 50% higher than that of the traditional oven.
Vertical oven
It is 3M long, 3M wide and 3.5m high
Power: 120kw,
Vertical roller structure, drying effect is good, and the equipment occupies a small space, thermal energy recycling, energy consumption is small, energy saving about 50%.
