In recent years, China Textile Science and Technology Co., Ltd. has made great achievements in the research and development of production technology of spunbond and meltblown nonwovens. Although this team is small in number, it produces several complete sets of spunbond and meltblown production lines every year. While supplying domestic demand, it also exports to more than a dozen overseas countries and regions. After seeing their production site, I feel a lot. I think there are many characteristics that are worth learning from peers.

One of the characteristics is to seize the leading products to form their own series of products. It is impossible for any company to get involved in all the nonwoven technology, and can only choose one or two to give full play to its own advantages. China Textile Technology is like this. In terms of spunbond and meltblown complete sets of equipment, it has established its own advantages, and relies on this advantage to occupy the market and serve the market. And by virtue of its own process technology and the advantages of complete sets of equipment, it has a high reputation in the domestic and foreign markets. The domestic users of Chinatex Technology are in many provinces, cities and regions. In addition, there are successful projects in production in Turkey, India, South Korea, Egypt, Saudi Arabia, Indonesia, Russia and Argentina in South America, which have been appreciated by users.

The second characteristic is to develop and produce products that meet market demand. Nonwovens are an emerging industry with broad market demands, and their technology and equipment must adapt to market demands. At present, a series of spunbond and meltblown technology and equipment have been formed, the machine width is from 1.6 meters to 3.2 meters, and the weight of the finished product is from 10 g/m2 to 200 g/m2 to 400 g/m2, suitable for Spinning speed depends on raw material, process and product. Products for different purposes such as medical treatment, hygiene, packaging, protection and building insulation, transportation, etc. are available. The raw materials of spunbond and meltblown nonwovens are polyester chips, which can be composited in "sandwich" or multiple superimposed forms. There are single-layer spunbond or meltblown processes, and spunbond and meltblown processes are combined. There are spunbond plus dual-mode meltblown plus spunbond process, and there are 2 spunbond plus 3 meltblown, plus a spunbond, a total of 6 die heads, a variety of composite combinations to form Diversified development model. The use of the products produced is different, and the fiber fineness of spunbond and meltblown is also different. With a series of products that can adapt to different varieties, users have a choice. In addition, China Textile Technology Co., Ltd. can also make tailor-made and tailor-made products according to the special requirements of users, and produce special configurations suitable for users' needs.

The third characteristic is to master key core technologies. The spunbond and meltblown processes are relatively short, and the process must be completed in an instant, which increases the difficulty of the process technology. In this entire production line, there are many key core technologies. For example, there are many difficulties in the design, manufacture and final assembly of the die head. However, through years of practice, China Textile Technology has mastered the core process technology of key parts, components and parts in the process from melt pipeline to hanger shape, distribution, spinning and laying. Of course, some key components also need to be produced by cooperative supporting units. However, regardless of their own production or supporting units, there are strict quality control measures, which must meet the design requirements and product standards, so as to ensure the overall technological level of the project.

The fourth feature is that it has a complete set of independent innovative spunbond and meltblown proprietary technologies. Spunbond and meltblown production lines have many technical parameters that are invisible to the eyes and intangible to the hands. For example, the pressure and flow rate in spinning, the temperature, wind pressure and flow rate of hot air, the scientific calculation of the crystallization of polymer raw materials, fibers, fineness and spinning speed, etc., China Textile Technology has accumulated a large amount of scientific data, and wrote Enter the process technical documents, and form its own unique technical document system in the process of forming a single machine, forming a process line and a complete set of projects, such as forming a complete project operation workbook, installation workbook, maintenance workbook, etc. These workbooks have clear responsibility requirements for the assistant craftsman to the chief craftsman and then to the project manager, and they are implemented to everyone.

Equipment is the carrier of the process, and the technical level of the equipment can only be verified through process production. The successful practice of the project undertaken by China Textile Technology has proved that the non-woven fabric produced by the process into the line and the engineering set can meet the engineering requirements in terms of crystallinity, fiber fineness, uniformity of laying and unit gram weight. The physical indicators such as quality deviation per unit area, coefficient of variation, transverse and longitudinal fracture, strength and anti-static water pressure of the products can meet the user's requirements.