What is spunbond non-woven fabric? Spunbond nonwoven fabric technology and process; Spunbond non-woven fabric refers to the process where the polymer has been extruded and stretched to form continuous filaments, which are then laid into a web. The web is then subjected to self bonding, thermal bonding, chemical bonding, or mechanical reinforcement methods to transform it into non-woven fabric. Its characteristics are high strength, good high temperature resistance (can be used for a long time in an environment of 150 ℃), aging resistance, UV resistance, high elongation, good stability and breathability, corrosion resistance, sound insulation, anti moth, and non-toxic.

main purpose

The main products of spunbond non-woven fabric are polypropylene polyester (long fiber, short fiber), and the most common and frequently used one is non-woven bags

The application of non-woven packaging and so on, and it is also easy to identify because the rolling point of spunbond non-woven fabric is diamond shaped.

At the application level, it can also be used as flower packaging cloth, luggage cloth, etc. Its characteristics of wear resistance, firmness, and good hand feel make it the best choice for making such products.

Process flow of spunbond nonwoven fabric

Polymer (polypropylene+recycled material) - High temperature melt extrusion of large screw stalks - Filter - Metering pump (quantitative conveying) - Spinning (upper and lower stretching and suction at spinning inlet) - Cooling - Airflow traction - Mesh curtain forming - Upper and lower pressure rollers (pre reinforcement) - Rolling mill hot rolling (reinforcement) - Winding - Inverted cutting - Weighing and packaging - Finished product storage

Technical types of spunbond nonwoven fabrics

The main technologies for spunbond nonwoven fabrics in the world include Leckfeld technology from Germany, STP technology from Italy, and Kobe Steel technology from Japan. The current situation, especially with Leifen technology becoming the mainstream technology in the world. At present, it has developed to the fourth generation technology. The characteristic is the use of negative pressure ultra high speed airflow stretching, and the fibers can be stretched to about 1 denier. Many domestic enterprises have already replicated it, but due to many cutting-edge issues in its core technology that have not yet been solved or mastered, it will take time for domestic equipment manufacturing enterprises to reach the level of Leifen technology.