The development status and detailed analysis of meltblown nonwovens technology in the current era

Abstract: Meltblown is a processing method for preparing ultra-fine fiber nonwoven fabrics, which has received continuous attention and continued rapid development since its appearance. The article introduces the development status of meltblown nonwoven technology in recent years from the aspects of production technology, raw material development and product application, and predicts its future development trend. Melt-blown non-woven is a technical method that relies on high-speed and high-temperature airflow to blow polymer melt to make it stretched quickly to prepare ultra-fine fibers. The process flow of the meltblown nonwoven method has the characteristics of short process distance, high production efficiency and low cost. It is a nonwoven production method with considerable development potential. Since the early 1950s began to study related technology and methods in European and American countries, Exxon in the United States, 3M Corporation, and Freudenberg in Germany all have their own meltblown nonwoven technology. The birth of meltblown technology is earlier than the spunbond process, but its commercialization is slower than the spunbond process. The main reason is that the meltblown nonwovens have poor strength and higher production costs. However, in terms of product characteristics, the ultrafine fiber structure of meltblown nonwovens is difficult to compare with spunbonded nonwovens. This is also the reason why meltblown nonwovens have always attracted attention. Woven materials perform well in specific application fields such as filtration, antibacterial, warmth, and medical and health, and have received the focus of relevant companies around the world. 1. New progress in melt-blown non-manufacturing technology. With the attention of various countries in the world to the ecological environment and the rapid development of industry, the related problems of melt-blown non-manufacturing technology have been overcome. Meltblown nonwovens are welcomed by more and more industries, and meltblown nonwovens have been widely used in the industrial and civil markets, which promotes the development of the meltblown nonwovens industry. 2. Development of melt-blown polymer raw materials The continuous development of melt-blown nonwoven technology has expanded the development of high-performance polymers in the application field. The products have special requirements in the trade field, such as high temperature resistance, antibacterial, and electrical isolation , Safety and comfort of medical supplies, etc. The production equipment provided by many meltblown nonwoven equipment manufacturers uses traditional PP, PET, PE, PA, PBT, PTT, and some high performance high polymers can also be used in spunbond and meltblown nonwoven products . 3. The application and development of meltblown nonwoven products. Due to the ultrafine fibers produced by meltblown technology, meltblown nonwovens have a large comparative area and a high porosity, so their filterability, shielding, and thermal insulation Oil absorption, etc. is difficult to achieve with nonwovens produced by other separate processes, so it is widely used in medical and industrial masks, thermal insulation materials, filter materials, medical and sanitary materials, oil-absorbing materials, wipes, battery separators and sound insulation materials, etc. field. With the emergence of new meltblown materials and the development of spunmelt composite technology, the application fields of meltblown and spunmelt composite nonwovens have become more extensive. 4. Conclusion From the current development of meltblown non-manufacturing technology, its development trend can be summarized as follows: (1) Opportunities for new processing principles and new technology swimsuits to improve product quality or develop new products, such as the use of Nanoval.TM split spinning, ultrasonic The meltblown nonwoven fabric with finer fiber diameter and better performance prepared by Mo splitting technology. Using two-component meltblown production technology to enrich the special properties of certain aspects of products to meet the use requirements of special fields and environments: (2) The current world energy shortage and serious environmental pollution, people have become more and more inclined to energy-saving and environmentally friendly materials, looking for Biodegradable and recyclable environmentally friendly raw materials will become an important development direction of the meltblown nonwoven industry: (3) With the increasing improvement of various nonwoven processing technologies, the processes are mutually infiltrated, mixed and compounded. It is an obvious trend in the development of current meltblown nonwoven technology.