What is Spunbond Nonwoven？
Spunbond non-woven fabrics: After the polymer is extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is then subjected to self-bonding, thermal bonding, chemical bonding or mechanical reinforcement methods to make the fiber web into a non-woven fabric.
Spunbond Nonwoven Features
Good high temperature resistance, good low temperature resistance (polypropylene can be used for a long time at 150°C, polyester can be used for a long time at 260°C), aging resistance, UV resistance, high elongation, good stability and air permeability, corrosion resistance , Sound insulation, moth-proof, non-toxic, degradable.
The main purpose
The main materials of spunbond non-woven fabrics are polyester and polypropylene.
The main products of spunbond non-woven fabrics are polypropylene and polyester (long fiber, staple fiber) non-woven fabrics. The most common and commonly used applications are non-woven bags, non-woven packaging, etc.; for spunbond non-woven fabrics It is easier to identify, generally has good two-way fastness, and the rolling point of general 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 feeling, etc. make it the best choice for making such products.
Process flow
Polypropylene: 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 Traction - Net curtain forming - Upper and lower pressing rollers (pre-reinforcement) - Mill hot rolling (reinforcement) - Winding - Reverse distribution and slitting - Weighing and packaging - Finished product storage
Polyester: processed polyester chips - large screw high temperature melt extrusion - filter - metering pump (quantitative conveying) - spinning (spinning inlet up and down stretching and suction) - cooling - air traction —— Net curtain forming —— Upper and lower pressing rollers (pre-reinforcement) —— Hot rolling of rolling mills (reinforcement) —— Winding —— Reverse distribution and slitting —— Weighing and packaging —— Finished product storage