What is the current status of spunlace nonwoven technology

Spunlace spunlace nonwoven non-woven fabrics are non-woven fabrics produced by the spunlace method. The spunlace method is also known as the hydraulic acupuncture method, the jet spray method, the jet entanglement method, and the water jet forming technique. This technology was originally invented by the American DuPont and Chicopee Chicopee cotton spunlace non-woven fabric technology research, in 1985 DuPont cotton spunlace non-woven fabric technology realized industrial production. Subsequently, France, Japan, and other cotton spunlace non-woven fabrics in the United States began to study. Due to the unique process technology of the spunlace method, it is widely used in medical and health products, synthetic leather base fabrics, shirts, and home decoration fields. As one of the fastest growing process methods, the spunlace non-woven fabric industry is also considered a sunrise industry in the 21st century and an important part of the technological transformation and industrial upgrading of my country's textile industry. In recent years, the global production capacity of spunlace non-woven fabrics has grown rapidly, with rapid development in both production supply and market demand. In order to meet the ever-increasing market demand, all Daquan cotton spunlace non-woven fabrics have invested heavily in the research and development and promotion of new technologies and new equipment.

Therefore, a number of new technological achievements have emerged in the spunlace non woven industry, including: Interval spunlace non-woven technology; composite process of spinning web and spunlace reinforcement; metal fiber spunlace reinforcement technology; device to improve vertical and horizontal strength. my country's spunlace non-woven fabrics started late the first spunlace production line was introduced from abroad. my country's spunlace non-woven fabric is still in the technological growth stage, and its output accounts for about of the total non-woven fabric output. It is expected that this ratio will be increased to in the next 10 years. my country has become a veritable major producer of spunlace non-woven fabrics. Some people predict that by 2020, the amount of spunlace non-woven fabrics in my country will reach  tons, accounting for 10%-15% of the total non-woven fabrics. The development trend is very strong. However, some experts pointed out that my country's spunlace non-woven fabric production is due to the huge investment in imported equipment, the difficulty of reducing production costs, the low rate of return on capital investment, and the disadvantages of technical software and after-sales service that cannot keep up with demand.

To a certain extent, it restricts the development of this industry. The use of spunlace technology to produce environmentally friendly cotton non-woven fabrics in this project is in line with the national textile industry upgrading policies and guidelines, and can promote the early realization of the national textile industry revitalization plan. The country’s first environmentally friendly cotton spunlace non woven fabric project with an annual output of  tons was implemented. The bleaching sequence of cotton spunlace non-woven fabrics is adjusted in the conventional process pre-bleaching process, which is called the post-bleaching process. The pre-bleaching process has the advantages of fewer procedures, low energy consumption, low raw material waste and high productivity in the process flow. It has stable product performance, low impurity rate, high cleanliness, low bacteria count, high strength, and is not easy to fluff Etc. The post-bleaching process is compared with the spunlace bleaching process. The raw cotton used before the spunlace process is pure natural cotton that has not been degreased and bleached.

After the spunlace process, the fine impurities in the cotton web can be removed and then degreased to avoid This solves the problem that small impurities are adsorbed and cannot be easily removed. The pure natural cotton that has not been degreased and bleached is spunlaced into cloth and then subjected to debleaching treatment. Impurities and bacteria will be removed uniformly during the debleaching process, ensuring high cleanliness and low bacterial count of the finished product, which is more suitable In many fields such as medical and health and personal care. In addition, compared with the pre-bleaching process, there are fewer opening, carding, and drying processes, which has the advantage of low energy consumption. There is no debleaching process before spunlace, cotton fiber will not be damaged, can be fully utilized, and has the advantage of low raw material waste. The post-bleaching process directly combs the cotton into a web and spun it into a cloth. Compared with the pre-bleaching process, the production speed of this process is not affected by the speed of the de-bleaching process, which increases the production capacity and reduces one-time pollution. It is an environmental protection concept.