Spunbond layer: the tough cornerstone of SMS non-woven material tape-free disposable protective clothing?

SMS non-woven fabric, the full name is spunbond-meltblown-spunbond three-layer composite non-woven fabric. The word "spunbond" in its name reveals the important component of this material-the spunbond layer. The spunbond layer is made by a spunbond process, which forms continuous fiber filaments through the steps of melting, extrusion, stretching and curing of high molecular polymer raw materials such as polypropylene. These fiber filaments are arranged in a certain pattern on the mesh curtain and reinforced by hot pressing or needle punching, and finally form a spunbond layer with certain strength and stability.

The spunbond layer plays a vital role in SMS non-woven fabrics. First, it provides the necessary tensile strength. Because the fiber filaments are continuous and interwoven, when stretched by external force, the fibers can support each other and bear the tension together, thereby ensuring that the SMS non-woven fabric is not easy to break when stretched. Secondly, the spunbond layer also gives the SMS non-woven fabric tear strength. When the material is subjected to shear or tearing force, the interwoven structure between the fiber filaments can effectively prevent the expansion of cracks and prevent the material from being torn.

Composite structure and performance of SMS nonwoven materials
In addition to the spunbond layer, SMS nonwovens also contain a meltblown layer and another spunbond layer. These three layers are compounded together through processes such as hot rolling, needle punching or hydroentanglement to form a complete SMS nonwoven material. This composite structure not only combines the respective advantages of the spunbond layer and the meltblown layer, but also produces new performance characteristics.

The meltblown layer is the core filter layer in SMS nonwovens. It stretches the melt stream into ultra-fine short fibers through the meltblowing process. These fibers are deposited on the condensation curtain in an unoriented manner to form a meltblown layer with extremely high specific surface area and filtration efficiency. The meltblown layer can effectively capture and filter tiny particles in the air, such as bacteria, viruses, dust, etc., providing effective protection for the wearer.

The other spunbond layer is located on the other side of the meltblown layer, and together with the first spunbond layer, it constitutes the inner and outer surfaces of the SMS nonwoven. The two spunbond layers not only provide protection and support for the meltblown layer, but also enhance the strength and stability of the entire material. They can also be treated with different surface treatments as needed, such as waterproof, oil-proof, anti-static, etc., to meet the application needs of different fields.

Production and application of tape-free disposable protective clothing
Based on the excellent performance of SMS non-woven materials, tape-free disposable protective clothing has been widely used in medical, industrial, environmental protection and other fields. These protective clothing not only have powerful protective functions, but also have good comfort and convenience.

In the medical field, tape-free disposable protective clothing is widely used in high-risk environments such as operating rooms and isolation wards. They can effectively block the spread of pathogens such as bacteria and viruses, and protect medical staff from infection. At the same time, the tape-free design makes the protective clothing more convenient and quick to wear and take off, avoiding the irritation and discomfort caused by the tape to the skin.

In the industrial field, tape-free disposable protective clothing is used for operations in various dangerous environments. They can resist the erosion and pollution of harmful substances and protect the health of workers. In addition, the breathability and comfort of SMS non-woven materials also prevent workers from feeling stuffy and uncomfortable when wearing for a long time.

In the field of environmental protection, tape-free disposable protective clothing is used to deal with various hazardous substances and waste. They can effectively prevent harmful substances from polluting the environment and harming the human body. At the same time, the degradability of SMS non-woven materials also enables these protective clothing to be properly disposed of after use, reducing the impact on the environment.

Effect of spunbond layer on the performance of SMS non-woven materials
As an important component of SMS non-woven materials, the spunbond layer has a profound impact on its performance. The presence of the spunbond layer significantly improves the tensile strength and tear strength of SMS non-woven fabrics. This allows the protective clothing to maintain structural integrity when subjected to external forces and is not easily damaged. This feature is essential for protecting the safety and health of the wearer.

The spunbond layer also enhances the wear resistance and durability of SMS non-woven fabrics. Because the fiber filaments are intertwined, when the material is rubbed or worn, the fibers can support and compensate each other, thereby extending the service life of the material.

The spunbond layer also has a positive effect on the breathability and comfort of SMS non-woven fabrics. Although the spunbond layer itself has a certain density and thickness, through the reasonable combination with the meltblown layer and the optimization of the composite process, the entire SMS non-woven fabric material can ensure the filtration performance while still having good air permeability. This allows the protective clothing to provide effective protection while maintaining the comfort of the wearer.