PP Plastic Meltblown Nonwoven Middle Layer Production Line Equipment
1. Meltblown cloth production process
Prepare the raw materials, then feed the raw materials into the extruder for melting. The melt material goes through the screen changer and metering. The melt is sprayed from the spinneret to the forming belt to form as the melt blown cloth. The melt blown cloth is processed by the electrical electret treatment device, and then cut and wound.
2. Advantages of Gwell Mechanical Meltblown Nonwoven Production Line
(1) Adopt special coat hanger type and gas equalizing type spinning die with independent intellectual property rights, and the melt distribution is even.
(2) The air nozzle has stable air pressure, symmetrical air flow on both sides, and uniform air flow in the width direction.
(3) It is convenient to adjust the width of the air gap.
(4) It adopts a specially designed hot air heating device, which has very good heating efficiency and excellent heat exchange efficiency, and low energy consumption.
(5) The receiving distance is adjustable, and the receiving form is flat network receiving, which is convenient for maintenance.
(6) The fiber size and cloth surface are uniform.
(7) The electret treatment makes the melt blown cloth have a good filtering effect. There are two electret methods, one is electric electret, and the other is water electret.
(8) Using our machine and our exclusive production process, we can manufacture melt blown cloth with filtration grade above 95. Fully comply with current international standards. It is suitable for manufacturing medical masks, N95 masks and other high-grade masks.
3. Machine model
| Machine model | GWS65 | GWS90 | GWS120 |
| Suitable material | PP |
| Width(mm) | 800mm | 1600mm | 2400mm |
| Output(kg/day) | 350-450 | 1000--1500 | 2000--2500 |
The raw material of the mask is polypropylene (PP). The medical surgical mask is generally multi-layer structure, commonly referred to as SMS structure, as shown in Figure 1 and Figure 2.
The S in the mask layer stands for spunbonded fiber, with a coarse fiber diameter of about 20 microns (nm). The two layers of spunbonded fiber mainly support the whole non-woven fabric structure, and have no obvious effect on the barrier performance. The most important layer inside the mask is the barrier layer or melt-blown layer (M). The fibers in the meltblown layer are relatively thin, about 2 microns (M) in diameter, and thus only one-tenth the diameter of the spunbond layer, which is essential to keep bacteria and blood out of the layer.
The fibers of the spun adhesive layer, the meltblown layer, and the shape of the hair are compared. As shown in the figure, 1/3 of the diameter of the hair is close to the fibers of the spun adhesive layer, and 1/3 of the diameter of the hair is close to the fibers of the meltblown layer
Gwell Machinery is a high-tech enterprise, committed to providing customers with plastic sheet, board, film and other extrusion lines. Gwell can provide turnkey projects, such as stone paper project, EVA solar film project, PP building formwork equipment,etc. Gwell has a strong technical equipment strength and key capacity, committed to high-end product development, international market development. “Realize customer value" is the company's long-term business philosophy.The manufacturing bases of the company are located in Taicang, Suzhou, which is close to the beautiful scenery of Shanghai, Yancheng Dafeng, the hometown of Red-crowned crane, and Nantong, the hometown of Education and longevity in China. It covers a total area about 150,000 square meters. It has an annual production capacity of more than 200 extrusion lines of various types of sheet and board.
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