Plastex & Polysun will show you the production line of heart melt blown cloth for mask

The best of Boyuan shapes the future
Melt blown fabric (melt blown non-woven fabric) is a kind of composite non-woven fabric with high melt index PP (polypropylene) as the raw material. It is the core material of mask. The diameter of spinneret fiber can reach 0.01-0.05mm. There are many voids, fluffy structure, good anti wrinkle ability, and unique capillary structure. The superfine fiber increases the number and surface area of fibers per unit area, so that the melt blown cloth has good filtration, shielding, heat insulation and oil absorption. Its main uses include air filtration, acid breaking liquid filtration, food hygiene filtration, industrial dustproof mask production, etc. in addition, it can also be used as medical and health products, industrial precision wipes, thermal insulation materials, oil absorption materials, battery separator, leather like base cloth, etc. Since the global outbreak of the new crown epidemic, the state owned assets supervision and Administration Commission of the State Council, in order to cope with the blowout demand of core materials of masks, requires relevant enterprises to speed up the construction of production lines, put them into production as soon as possible, expand the market supply of melt blown non-woven fabrics, and provide guarantee for epidemic prevention and control.

Common application fields of melt blown nonwovens

Application of air purification
It is used in air purifier, high efficiency air filter element and coarse and medium efficiency air filtration with large flow rate. The utility model has the advantages of small resistance, high strength, excellent acid and alkali resistance, corrosion resistance, stable efficiency, long service life, low price, etc.

Application in medical and health field     

Liquid filter material and battery diaphragm
Polypropylene melt blown cloth has excellent performance in filtering acid and alkaline liquid, oil, etc. it has been regarded as a good diaphragm material by the battery industry at home and abroad, and has been widely used, which not only reduces the cost of battery, simplifies the process, but also greatly reduces the weight and volume of battery.

Oil absorbing materials and industrial wipes
All kinds of oil absorption materials made of polypropylene melt blown cloth can absorb 14-15 times of self weight. They are widely used in environmental protection engineering and oil-water separation engineering. In addition, they can be used as clean materials for oil and dust in industrial production. These applications give full play to the characteristics of polypropylene itself and the adsorption of ultrafine fibers made by melt spraying.

thermal material
The average diameter of the melt blown fiber is between 0.5-5um, which is directly made into nonwovens by randomly laying nets. Therefore, the specific surface area of the melt blown fiber is large and the porosity is high. There is a large amount of air in this structure, which can effectively prevent the heat loss. It is an excellent filtering and heat preservation material. It is widely used in the production of clothing and various heat insulation materials. For example, it can be used as a leather jacket, ski shirt, cold suit, cotton cloth, etc. it has the advantages of light weight, warmth preservation, no moisture absorption, good air permeability, no mildew, etc.

N95 / medical / civil mask material -- introduction of melt blown nonwovens
Mask, its raw material is polypropylene (PP), medical surgical mask is generally multi-layer structure, short for SMS structure. S in the mask layer represents spunbond fiber, which is about 20 microns (nm) in diameter. Two layers of spunbond fiber mainly support the whole structure of the non-woven fabric, which has no significant impact on the barrier performance. The most important part of the mask is the barrier layer or the melt blown layer (m). The fiber diameter of the melt blown layer is relatively thin, about 2 microns (m), only one tenth of the diameter of the spunbond layer, which is very important to prevent bacteria and blood from entering the spunbond layer.

Compared with the shape of hair, 1 / 3 of the hair diameter is close to the fiber of spinning adhesive layer, and 1 / 30 of the hair diameter is close to the fiber diameter of fusible layer.   

As mentioned above, the melt blown layer is thin and can prevent the entry of small particles such as bacteria. In fact, it is a 5-layer mask 

made of polypropylene non-woven smmms, which can filter 95% of the small particles.

N95: according to the national standard of medical respirator GB / T 19083, under the condition of gas flow of 85L / min, it can block 95% of 

small particles (0.3 μ m).

From the material point of view, the raw material of spunbond layer s requires high strength, and the raw material of melt blown layer m 

requires high fluidity.

Plastex international melt blown cloth production process

Based on years of industry experience, Plastex International provides 175mm-4200mm wide melt blown cloth production lines at a price to meet 

the needs of the country and the market

Equipment advantages:

1. Adopt gas equalizing spinning die, melt distribution is even

2. The air pressure of the air nozzle is stable, the air flow on both sides is symmetrical, and the air flow in the width direction is even. The air gap width is easy to adjust.

3. The hot gas flow heating device has good heating efficiency, excellent heat exchange efficiency and low energy consumption.

4. The receiving distance is adjustable, and the receiving form (flat net receiving and roller receiving) can be easily replaced.

5. The fiber size and cloth surface are even.

6. Standing polarization treatment makes the melt blown cloth have better filtering effect.