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There are two types of melt-blown non-woven fabrics in my country: continuous and intermittent. The source of continuous production lines is mainly imported melt-blown die heads, and other parts are assembled into lines by enterprises themselves. With the improvement of my country's manufacturing level in recent years, Domestic meltblown dies have gradually gained more market share. The following editors from Changshu Yanrui Nonwoven Products Co., Ltd. analyze the development trend of the meltblown nonwoven industry according to five major applications:
1. Application in the field of air purification
It is used in air purifiers as sub-efficient and high-efficiency air filter elements and for coarse and medium-efficiency air filtration for larger flow rates. It has the advantages of low resistance, high strength, excellent acid and alkali resistance, corrosion resistance, stable efficiency, long service life and low price. There is no lint phenomenon that the filter material falls off in the gas purified with it.
2. Application in the field of medical and health
The dust-proof port made of melt-blown non-woven fabric has low breathing resistance, no stuffiness, and dust-proof efficiency as high as 99%. It is widely used in hospitals, food processing, mines and other workplaces that require dust-proof and anti-bacteria. The anti-inflammatory and analgesic film made of the product after special treatment has good air permeability, no toxic and side effects, and is easy to use.
3. Liquid filter material and battery separator
Polypropylene meltblown cloth has very good performance for filtering acidic and alkaline liquids, oils, 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 the battery, but also simplifies the process, and greatly reduce the weight and volume of the battery.
4. Oil-absorbing materials and industrial wipes
Various oil-absorbing materials made of polypropylene melt-blown cloth can absorb 14-15 times of its own weight. It is widely used in environmental protection projects and oil-water separation projects. In addition, in industrial production, it can be used as a clean material for oil and dust. These applications give full play to the characteristics of polypropylene itself and the adsorption of ultrafine fibers made by meltblown.
5. Thermal material
The average diameter of the melt-blown ultrafine fibers is between 0.5 and 5 m, the specific surface area is large, a large number of fine pores are formed in the cloth, and the porosity is high. A large amount of air is stored in this structure, which can effectively prevent heat loss and has excellent thermal insulation properties. It is widely used in the production of clothing and various thermal insulation materials.
In the fight against the epidemic, meltblown non-woven fabrics have demonstrated excellent protection and isolation functions, and have been re-understood and favored by the market. The market is also constantly exploring the application scenarios of meltblown non-woven fabrics. After this epidemic, the attention at home and abroad on "filtration" and "purification" will be unprecedentedly increased, and the development of non-woven fabrics will be broader.
