The origin of spunbond nonwoven technology

Spun-bond process is one of the main methods of nonwoven material production, and it is also called spinning method or polymer extrusion method. The principle of the spunbond method is to use chemical fiber spinning to spin, stretch, and lay the polymer into a net, and finally to form a non-woven material by needle punching, spunlacing, hot rolling or self-bonding.

Spunbond is a kind of non-woven fabric technology. Its origin and development are the continuation of the commercial synthetic filament spinning process in the 1940s and 1950s. Its origin can be traced back to the 1940s. In the early 1950s, the U.S. Naval Laboratory established a small melt extruder to extrude the melted polymer from the spinneret holes to form filaments with very fine fineness, which were then blown into the final product by hot air. On the mesh curtain, the fibers are bonded to form a web. This is the earliest spinning technology, but due to the limitations of the technology at the time, this technology could not be studied.

With the development of chemical fiber technology, the Freudenberg company in Germany and Dupont company in the United States began to study spunbonded non-woven technology in the late 1950s. However, due to high production costs and imperfect technology, the technology has The research results have not been promoted. It was not until the 1960s that the American Du-pont Company began industrial production in the mid-1960s. In the late 1960s and early 1970s, spunbond non-woven technology developed The Fen company adopts the overall horizontal venturi drafter, which has greatly improved the quality of spunbonded non-woven fabrics, and the degree of industrial production has also been greatly improved. In the future, American Aisen Company will apply meltblown technology to spunbond technology. Due to the special structure of the drafter, this has enabled the spunbond non-woven technology to have greater development.

Due to the rapid progress of spunbond production technology, high growth rate, large production capacity, high quality, excellent performance, wide product application range, strong market adaptability, and the short production process of spunbond non-woven fabrics, high production efficiency , Has the advantage of large-scale production, among which the strength and elongation of spunbonded non-woven fabrics are better. At present, with the emergence of differentiated fiber spinning technologies such as meltblown and spunbond multi-nozzle composite technology and bicomponent, it has brought broader application prospects to spunbonded non-woven technology. Therefore, the nineteenth century After the ten's, spunbond non-woven fabrics will have more rapid and more extensive development in terms of product use and technological advancement.

According to the composition of non-woven fabrics, there are polyester, polypropylene, nylon, spandex, acrylic, etc.; different components will have completely different styles of non-woven fabrics. The spunbond fabric usually refers to polyester spunbond and polypropylene spunbond; and the styles of these two fabrics are very similar, which can be distinguished by high temperature testing.