The difference between hot pressed non-woven fabric and needle punched non-woven fabric

Characteristics of hot pressed nonwoven fabric

During the manufacturing process of hot pressed non-woven fabric (also known as hot air cloth), high temperature heating is required to uniformly spray the melted short or long fibers onto the mesh belt through the spray holes, and then the fibers are fused together by the high temperature heating of the hot roller. Finally, it is cooled by a cold roller to form a hot pressed non-woven fabric. Its characteristics are softness, high density, poor breathability, poor water absorption, thin and hard hand feel, etc. The production process of hot-rolled non-woven fabric involves melting and spraying polymers onto a mesh belt, followed by hot rolling to form a compacted non-woven fabric. This manufacturing method can make non-woven fabric feel soft, tough, and wear-resistant, so it is widely used in the manufacturing of clothing, shoes, hats, bags, and other aspects.

 Characteristics of needle punched non woven fabric

Needle punched non-woven fabric uses a needle punching machine to embroider fiber mesh belts, allowing the fibers to gradually solidify through stretching under the action of embroidery needles. Its characteristics are softness, breathability, good water absorption, wear resistance, non toxicity, non irritation, etc. The production process of needle punched non-woven fabric is to reinforce the fiber web by needle punching at least twice after interlacing, so as to form a fabric like structure. Needle punched non-woven fabric has a relatively hard feel, as well as high strength and wear resistance, so it is often used in manufacturing industries such as road protection, construction engineering, filters, and other fields.

The difference between hot pressed nonwoven fabric and needle punched non-woven fabric

The main difference between hot pressed non-woven fabric and needle punched non-woven fabric lies in their processing principles and applications. ‌
Hot pressed non-woven fabric is made by heating and applying pressure to melt fiber materials, then cooling and reinforcing them into fabric. This processing method does not require the use of needles or other mechanical actions, but instead uses hot melt adhesive to bond the fibers together. The processing process of hot pressed non-woven fabric is relatively simple and suitable for producing products that do not require high strength and stability.
Needle punched non-woven fabric utilizes the puncture effect of needles to reinforce the fluffy fiber mesh into fabric.

This processing method involves repeatedly puncturing the fiber mesh with a needle, reinforcing it with hooked fibers, and forming needle punched non-woven fabric. The processing principle of needle punched non-woven fabric makes it have the characteristics of strong tension, high temperature resistance, aging resistance, stability and good permeability, and is suitable for application scenarios requiring high strength and stability.

Conclusion

In short, hot pressed non-woven fabrics mainly use hot melt adhesives to bond fibers, while needle punched non-woven fabrics reinforce fiber webs through the piercing effect of needles. The differences in these two processing methods result in differences in their performance and applications.

Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.