The origin and development of spunbond nonwoven technology

Spun-bond process is one of the main methods for the production of non-woven materials, also known as spunlaid or polymer extrusion. The principle of the spunbond method is to use the method of chemical fiber spinning, spinning, drawing, and laying the polymer into a web, and finally reinforced by acupuncture, spunlace, hot rolling or self-bonding to form a non-woven material.

Spunbond is one of the non-woven technologies. Its origin and development is a continuation of the commercial synthetic filament spinning process in the 1940s and 1950s. Its origin can be traced back to two In the 1940s and early 1950s, the U.S. Naval Laboratory established a small melt extruder to extrude the melted polymer from the spinneret to form fine filament fibers. Then, the hot air is blown onto the netting curtain to make the fibers bond to form a net. This is the earliest spinning technology, but due to the limitation of the technology at that time, this technology cannot be studied.

With the development of chemical fiber technology, the German Freudenberg Company and the American Dupont Company began to study the spunbond nonwoven technology in the late 1950s. For reasons such as perfection, the research results of this technology have not been promoted. In the 1960s, the American Du-pont company applied for a patent, and industrial production began in the mid-1960s. In the late 1960s and early 1970s, the spunbond nonwoven technology was developed. The German Reifen Company adopts an integral horizontal Venturi drafter, which greatly improves the quality of spunbonded non-woven fabrics, and the degree of industrial production has also been greatly improved. Later, the American Essen Company applied the meltblown technology to the spunbond technology. Due to the special structure of the drafter, this made the spunbond nonwoven technology have a 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, coupled with spunbond non-woven fabrics The production process is short, the production efficiency is high, and it has the advantages of large-scale production, among which the strength and elongation properties of the spunbond non-woven fabric are better. At present, with the emergence of meltblown and spunbond multi-nozzle composite technology, bicomponent and other differential fiber spinning technologies, spunbond non-woven technology has brought a broader application prospect, so the nineteenth century After the ten years, spunbond non-woven fabrics will be developed more rapidly and widely in terms of product use and technological advancement.

According to the ingredients, non-woven fabrics include polyester, polypropylene, nylon, spandex, acrylic, etc.; different ingredients 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 kinds of fabrics are very similar, and can only be judged by high temperature test.

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