Features and applications of polypropylene spunbond non-woven fabrics

Polypropylene spunbond non-woven fabric: After the polymer is extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is then bonded by itself, thermally bonded, chemically bonded or mechanically reinforced. The web becomes a non-woven fabric.


Material: Polypropylene (PP)


Polypropylene is a polymer commonly used in the spinning process. The main performance parameters are isotacticity, melt index (MFI) and ash content.


The spinning process requires the isotacticity of polypropylene to be above 95%, and spinning is difficult if it is less than 90%.


During the polymerization process, because of the different positions of the methyl groups in the three-dimensional space, three types of polymers can be produced.


Features: high strength, good high temperature resistance, aging resistance, UV resistance, high elongation, good stability and air permeability, corrosion resistance, sound insulation, mothproof, non-toxic.


Process flow: polymer (polypropylene+recycled material)-large screw high temperature melt extrusion-filter-metering pump (quantitative delivery)-spinning (upward and downward stretching and suction at the entrance)- Cooling-air traction-net curtain formation-upper and lower press rolls (pre-reinforcement)-rolling mill hot rolling (reinforcement)-winding-inverted cloth slitting-weighing and packaging-finished product storage


Technical characteristics of spunbond non-woven fabrics


1. High production capacity


2. Good mechanical properties of the product


3. Low production cost


4. Production is easy to manage


Product Features


Generally, the two-way fastness is good, and the rolling point of the general spunbond non-woven fabric is diamond-shaped, abrasion resistance, strong hand feeling, etc., making it the best choice for making this type of product.


Technology Type


The world's spunbond non-woven fabric technology mainly includes Leifen's Racofil technology in Germany, STP technology in Italy, and Kobe Steel technology in Japan. The current situation, especially the Refine technology has become the mainstream technology in the world. Has now developed to the fourth generation of technology. It is characterized by the use of negative pressure and ultra-high-speed air drafting, and the fiber can be stretched to about 1 denier.


Application areas:


Clothing: clothing lining, winter warm materials (inner core of ski shirts, quilts, sleeping bags), work clothes, surgical gowns, protective clothing, suede materials, clothing accessories


Daily necessities: non-woven bags, flower packaging cloth, luggage cloth, home decoration (curtains, furniture cover cloth, table cloth, sofa, window cover, wall cloth), needle-punched chemical fiber carpet, coating material ( Artificial leather)


Industry: filter materials (chemical raw materials, food raw materials, air, machine tools, hydraulic systems), insulating materials (electrical insulation, thermal insulation, sound insulation), papermaking blankets, car shells, carpets, car seats, car door inner layers


Agriculture: Roofing materials for greenhouses (agricultural hotbeds)


Medical and health: non-bandaged medical, bandaged medical, and other sanitary civil engineering: geotextile


Construction: Rainproof material for house roof and shed Military: Breathable anti-virus suit, anti-nuclear radiation suit, inner layer of space suit, military tent, war emergency room supplies