The gap in the mask is huge, and the gap in the melt-blown non-woven fabric is even bigger!
Meltblownnon-woven fabric is called the “heart of medical surgical masks and N95 masks in the industry ” is the filter layer in the middle of the mask. It has good filtering, shielding, heat insulation and oil absorption properties. It is an important raw material for the production of masks. Melt-blown non-woven fabrics must be used to produce masks. The gap in the mask is huge, so the gap in the melt-blown non-woven fabric will also be even bigger!
According to statistics from the China Industrial Textiles Industry Association, the production process of China’s nonwovens industry is based on spunbond. host. In 2018, the output of spunbond nonwovens was 2.9712 million tons, accounting for 50% of the total nonwovens output, and is mainly used in fields such as sanitary materials; however, there are not many meltblown nonwovens manufacturers, and meltblown The process ratio is only 0.9%, and the domestic output of melt-blown nonwovens is 53,500 tons/year. These melt-blown fabrics are not only used for masks, but also for environmental protection materials, clothing materials, battery separator materials, wiping materials, etc.
Judging from the latest data, the national output of melt-blown non-woven fabrics is less than 100,000 tons/year. Meltblown non-woven fabric is called the “heart” of medical surgical masks and N95 masks in the industry. It is the filter layer in the middle of the mask. It has good filtering, shielding, heat insulation and oil absorption properties. It is an important raw material for the production of masks. A mask only requires a few grams of melt-blown, and it usually takes a year to add a melt-blown production line.
Under the epidemic, the demand for masks has increased significantly. According to the fourth national economic census data, the total number of domestic legal entities and self-employed households is as high as 533 million. Based on one mask per person per day, at least 5.33 masks are needed per day. Billions of masks. Data from the Ministry of Industry and Information Technology in February this year showed that currently, the maximum daily production capacity of domestic masks is 20 million pieces. There is a huge gap in masks, and many companies have begun to produce masks across borders. According to Tianyancha data, based on industrial and commercial registration change information, from January 1 to February 7, 2020, more than 3,000 companies across the country have added “masks, protective clothing, disinfectants, thermometers, medical Equipment” and other businesses. Melt-blown non-woven fabrics must be used to produce masks. The gap in the mask is huge, so the gap in the melt-blown non-woven fabric will also be even bigger!
Under such circumstances, the country has mobilized some source companies to put into full production and increase production capacity. However, at present, in the face of the situation where meltblown non-woven fabrics are in demand everywhere on textile platforms and in the circle of textile people’s friends, it is not currently possible. optimism. China’s production speed is facing unprecedented challenges during this pneumonia! But I believe that in the face of the increasingly improving situation, I believe that everything will be fine.
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Melt-blown non-woven fabric
Meltblown cloth is mainly made of polypropylene as the main raw material, and the fiber diameter can reach 1 to 5 microns. With many voids, fluffy structure and good anti-wrinkle ability, these ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, thus making the melt-blown cloth have good filtering, shielding, thermal insulation and oil absorption properties. . It can be used in fields such as air and liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil-absorbent materials and wipers.
The process of melt-blown non-woven fabrics: polymer feeding—melt extrusion—fiber formation—fiber cooling—web formation—reinforcement into cloth.
Application scope
(1) Medical and sanitary cloths: surgical gowns, protective clothing, disinfection wraps, masks, diapers, women’s sanitary napkins, etc.;
(2) Cloths for home decoration: wall coverings, tablecloths, sheets, bedspreads, etc.;
(3) Clothing fabrics: linings, adhesive linings, wadding, styling cotton, various synthetic leather base fabrics, etc.;
(4) Industrial cloth: filter materials, insulation materials, cement packaging bags, geotextile, covering cloth, etc.;
(5) Agricultural cloth: crop protection cloth, seedling raising cloth, irrigation cloth, thermal insulation curtain, etc.;
(6) Others: space cotton, thermal insulation and sound insulation materials, linoleum felt, cigarette filters, tea bags, etc.
Meltblown cloth can be called the “heart” of medical surgical masks and N95 masks.
Medical surgical masks and N95 masks generally adopt a multi-layer structure, referred to as SMS structure: a single layer of spunbond layer (S) on both sides of the inside and outside; a melt-blown layer (M) in the middle, which is generally divided into single layer or multiple layers. layer.
Flat masks are generally made of PP spunbond + meltblown + PP spunbond. You can also use short fibers in one layer to improve the skin feel. Three-dimensional cup-shaped masks are generally made of PETpolyester needle-punched cotton + meltblown + needle-punched cotton or PP spunbond. Among them, the outer layer is a waterproof-treated non-woven fabric, which is mainly used to isolate the droplets sprayed by the patient; the middle melt-blown layer is a specially treated melt-blown non-woven fabric, which has good filtering and shielding properties. , heat insulation and oil absorption, are important raw materials for the production of masks; the inner layer is ordinary non-woven fabric.
Although the spunbond layer (S) and meltblown layer (M) of the mask are both non-woven fabrics and the raw materials are polypropylene, the production processes are different.
Among them, the fiber diameter of the spunbond layer on the inside and outside is relatively thick, about 20 microns; the fiber diameter of the melt-blown layer in the middle is only 2 microns.�Made from a polypropylene material called high-melt fiber.
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