What is spunbond non-woven fabric? Spunbond non-woven fabric technology and process
Time:
2022-03-07
What is spunbond non-woven fabric? Spunbond non-woven fabric technology and process; spunbond non-woven fabric refers to that after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the fiber web is then self-bonded and thermally bonded. Bonding, chemical bonding or mechanical reinforcement methods to turn the web into a non-woven fabric. It is characterized by high strength, good high temperature resistance (can be used for a long time in 150 ℃ environment), aging resistance, UV resistance, high elongation, good stability and air permeability, corrosion resistance, sound insulation, moth-proof, non-toxic.
What is spunbond non-woven fabric? Spunbond non-woven fabric technology and process
The main purpose
The main products of spunbond non-woven fabrics are polypropylene polyester (long fiber, staple fiber), the most common and most commonly used is non-woven bags
The application of non-woven packaging, etc., and it is also easy to identify, because the rolling point of spunbond non-woven fabrics is diamond-shaped.
At the application level, it can also be used as flower packaging cloth, luggage cloth, etc. The characteristics of wear resistance, firm hand feel and so on make it the best choice for making such products.
Spunbond Nonwoven Process Flow
Polymer (polypropylene + return material) - large screw high temperature melt extrusion - filter - metering pump (quantitative conveying) - spinning (spinning inlet and outlet stretching and suction) - cooling - air flow Traction - net curtain forming - upper and lower pressing rollers (pre-reinforcement) - rolling mill hot rolling (reinforcement) - winding - reverse distribution and slitting - weighing and packaging - finished product storage
Technical Types of Spunbond Nonwovens
The world's spunbond non-woven technologies mainly include Lacoffel technology from Reifen, Germany, STP technology from Italy, and Kobe Steel technology from Japan. The current situation, especially with Reffin technology becoming the mainstream technology in the world. It has now developed to the fourth generation of technology. It is characterized by the use of negative pressure ultra-high-speed air drafting, and the fiber can be stretched to about 1 denier. Many domestic enterprises have already made imitations. Since there are many cutting-edge problems in its core technology that have not been solved or mastered, it will take time for domestic equipment manufacturers to reach the technical level of Refine.
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