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Original title: What materials are medical protective suit made of? Textile Bulletin Textile Bulletin The function of the medical protective suit is to create a bacterial barrier to prevent bacterial migration and reduce cross infection. In recent years, some research institutes and enterprises have developed many medical protective suit, most of which are made of non-woven fabrics. Medical protective suit can be divided into woven fabric, non-woven fabric and composite material according to the tissue structure of the fabric; it can be divided into disposable type (disposable), limited type and reusable type according to the service life; there are three methods of finishing processing, coating and laminating according to processing composite technology. Protective suit have different properties because of their different raw materials. At present, the nonwovens used in several medical protective suit which are being sold and developed in the domestic market are mainly as follows. Polypropylene spunbonded fabric The polypropylene spun-bonded cloth can be made into antibacterial protective suit, antistatic protective suit and the like by antibacterial, antistatic and other treatments. Compared with the traditional protective suit of cotton cloth, the protective suit of polypropylene spunbonded cloth is undoubtedly a great progress. Because of its low price and disposable use, it can greatly reduce the cross-infection rate, and has been widely promoted abroad for a long time. However, the hydrostatic pressure resistance of the material is relatively low, and the efficiency of blocking virus particles is relatively poor, so it can only be used as sterile surgical gowns, disinfection cloth and other common protective equipment. Expand the full text Spunlaced fabric composed of polyester fiber and wood pulp The material has soft hand feeling, is close to the traditional textile, can be subjected to three-resistance (alcohol resistance, blood resistance and oil resistance), antistatic, antibacterial and other treatments, can be disinfected by gamma rays, and is a better medical protective suit material. However, its resistance to hydrostatic pressure is relatively low, and its barrier efficiency to virus particles is relatively poor, so it is not an ideal protective suit material. Polypropylene spunbond-meltblown-spunbond composite nonwoven fabric, i.e. SMS or SMMS Melt-blown fabrics are characterized by fine fiber diameter, large specific surface area, fluffy, soft, good drapability, small filter resistance, high filter efficiency and strong ability to resist hydrostatic pressure, but their low strength and wear resistance limit the development of their application fields to a considerable extent. However, spunbonded fabric has higher fiber linear density, and the fiber web is composed of continuous filaments, so its breaking strength and elongation are much larger than those of melt-blown fabric, which can make up for the shortcomings of melt-blown fabric. This material has the following excellent properties: ① Uniform and beautiful appearance; ② High resistance to hydrostatic pressure; ③ Soft hand feeling; ④ Good air permeability; ⑤ Good filtering effect; ⑥ Strong acid and alkali resistance. In addition, SMS nonwovens can also be treated with three resistances (alcohol resistance, blood resistance and oil resistance), antistatic, antibacterial and anti-aging to meet the needs of different uses. Polymer-coated fabric There are many kinds of coatings for protective fabrics, such as polyvinyl chloride, polyethylene, polychloroprene rubber and other synthetic rubbers. This kind of protective suit has very good waterproof and bacterial particle barrier properties and can be reused, but its moisture permeability is poor, a large amount of human sweat can not be discharged, and its wearing comfort is poor. The protective suit of using rubber-coated fabrics in Severe Acute Respiratory Syndrome (SARS) period is really a last resort. The