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The future of medical nonwovens

by:XINYU Non-woven     2022-03-06

Medical textiles need to meet two conditions, one is that the cost is low, and it is worth a one-time consumption; It is required that because the product is in direct contact with the human body, any chemical additives that need to be used have good biocompatibility.

Medical non-woven fabrics use polypropylene as the main raw material, and its price depends on resin chips (using petroleum as raw materials) and specific production processes, in which the production efficiency has a greater impact. In addition, because most protective clothing It is necessary to meet specific standards and meet various regulatory requirements of local government agencies, such as the US FDA certification and the European Community certification mark, etc., in order to carry out normal sales, that is, the final product needs to be certified, and the front raw materials used are There is no requirement, so it does not really promote the innovative development of non-woven fabrics. Product manufacturers themselves cannot fully control the entire certification process. In addition, product manufacturers also need to seek a reasonable certification system and properly label the final product.

The production of non-woven fabrics is full of any conceivable innovations. The new technology will promote and improve the entire non-woven fabric processing process, including resin chip varieties, mixing proportions, fiber fineness, shape, shape , density and thickness, filler types, additive formulations, and various post-cleaning methods, etc., the above-mentioned methods can be combined with each other to meet the different functions of the end consumer demand.

Although nanotechnology has appeared for many years, it has not been used in the processing of non-woven fabrics. Another method is to directly use nanofibers with a larger specific surface area, and increase the overall density of the non-woven fabric without adding any other materials. Despite the high cost and limited performance improvements that will result in recent breakthroughs in the use of nanotechnology in nonwovens, PGI has launched a fully commercialized Arium technology that can produce sub-micron fibers without the need for resins Slice modification does not have to reduce the production speed, which greatly improves the performance of non-woven fabrics. In addition, the structure of non-woven fabrics can also be improved in various ways, such as compounding with non-woven fabrics produced by other methods.

Another technology is the use of plasma treatment, which can improve the surface structure of the non-woven fabric without the need for post-coating treatment, which can increase the air permeability of the non-woven fabric by 95%. The progress includes processing under normal pressure conditions, and does not require the use of vacuum, because vacuum plasma technology requires complex equipment and equipment, and its cost is much higher than ordinary coating treatment, which restricts its widespread use.

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