Non-woven fabrics, also known as knitted fabrics, are made of polyester fibers and other materials. It can be used in different industries, such as sound insulation, heat insulation, heating sheets and masks and other materials. What is the way to improve the breathability of this material?
Non-woven fabrics are not only cheap and easy to differentiate, but also can be recycled and used, so they are widely used in the market. With the development of industry, there are more and more types of it, and the scope of use is also wider and wider. In existing technology, non-woven fabrics are usually designed as a single layer. Although breathable, the structure is single, resulting in non-woven fabrics with poor strength, which then reduces the quality of the entire fabric. Now, people have higher and higher requirements for its use, but the non-woven fabrics on the market now obviously cannot meet people's needs.
The air permeability of non-woven fabrics is the amount of air required to pass through non-woven fabrics per unit of time under a specific area and pressure. Now the unit is mainly L/m2s. We can measure its air permeability with more professional instruments, develop and produce It can be used to measure the air permeability of non-woven fabrics, and the data obtained after analyzing and testing can have a general understanding of air permeability.
The structure of the non-woven fabric is porous. Relevant studies have shown that the pore size is closely related to the breathability of fabrics. Generally speaking, the larger the average pore size of similar fabrics, the better the air permeability. Different types of fabrics have significant differences in pore size and breathability. Due to the difference in fiber material, yarn density, fabric structure, fabric warp and weft density and fabric thickness, the air permeability of similar fabrics is also very different.
