The production process of non-woven fabrics

The non-woven fabric manufacturer is a professional non-woven fabric manufacturer. Today, I will introduce some processes and techniques in the production of non-woven fabrics:

1. Choice of fiber/raw material
The choice of fiber/raw material is based on the following aspects: cost, processability and final performance requirements of the fiber web. Fiber is the basis of all nonwoven materials. Most natural fibers and chemical fibers can be used for non-woven materials.

The raw materials also include adhesives and finishing chemicals. Generally, an adhesive is used to bond the fibers in the fiber web to each other to obtain a fiber web with a certain strength and a complete structure. However, some adhesives can not only be used for bonding, in many cases, they can also be used as finishing agents, such as coating finishing, laminating process and so on. Adhesives are divided into natural total and synthetic adhesives.

2, into the network
The loose fiber web structure formed by fibers is called web forming. At this time, the strength of the shrinked web is very low, and the fibers in the web can be staple fibers or continuous filaments, depending on the process of forming the web. There are three main types of web-forming processes: dry-laid, wet-laid and polymer extrusion.

3, fiber mesh reinforcement
After the fiber web is formed, the loose fibers held by the fiber web are reinforced by the relevant process methods to become the fiber web reinforcement, which gives the fiber web certain physical and mechanical properties and appearance.

4. Finishing and forming
Finishing is carried out after fiber web reinforcement. Finishing aims to improve the structure and feel of the product, and sometimes also to change the performance of the product, such as breathability, absorption and protection. Finishing methods can be divided into two categories: mechanical methods and chemical methods. Mechanical post-processing includes wrinkling, calendering, shrinking, perforating, etc. Chemical finishing includes dyeing, printing and functional finishing.

After finishing, non-woven materials are usually transformed into final products on forming machines, such as polyester non-woven fabrics, flame-retardant non-woven fabrics, needle-blown cotton non-woven fabrics, etc. The forming process generally includes one or more of the following steps: unwinding, slitting, folding, cutting, sewing, disinfection, dipping and packaging.