In general, the nonwovens business relies on highly engineered mass production. Due to competitive pressures, constant innovation is required to ensure the production of high quality, compliant nonwoven products at the lowest cost. The industry is driven by technological developments in machinery, process control, and materials. To have a sustainable future, nonwovens companies need to be at the forefront of these developments. Now in this article, we will introduce you to Nonwoven Manufacturing and its types.
What is non-woven fabric?
Nonwovens do not contain interwoven strands, but have an organized internal structure. These fabrics are made by bringing fibers together and combining them with heat, chemicals or pressure to create a cohesive, fabric-like material.
Contrary to traditional materials such as cotton, linen, wool and silk; nonwovens do not require weaving or knitted felt is one of the most common examples of nonwovens. It is made by stirring the fibers in a solution until they interlock into a dense fabric.
Top 5 Nonwoven Fabrics
There are 5 types of non-woven fabrics classified by industry insiders. Now we will read below.
thermally bonded nonwoven
This kind of non-woven fabric is mainly manufactured by adding fiber or binder reinforcement materials to the fiber network, and then strengthening the network into a cloth by heating and cooling.
Spunbond Nonwovens
The processing method of spunbonded nonwovens is as follows: extrude and stretch the polymer to form continuous filaments, spread the filaments into a web, and then process the web through self-bonding, thermal bonding, chemical bonding or mechanical reinforcement. into non-woven fabrics.
Spunlace nonwoven
This is a non-woven fabric reinforced by air or mechanically, hydroentangled, needle punched or hot rolled. The polymer chips, short fibers or filaments are used directly to form the fiber network and finally form the spunlace nonwoven.
Melt blown non-woven fabric
Meltblown nonwovens are made by extruding molten polymer fibers into a linear die containing hundreds of small holes to form elongated fibers.
wet laid nonwoven
The manufacturing process of wet-laid nonwovens is as follows: the fiber raw materials are opened into single fibers in an aqueous medium, and different fiber raw materials are mixed to form a fiber suspension slurry, and then the suspension slurry is transported to the web forming mechanism, and the fibers are in a wet state. Lay down into the cloth.
Nonwoven Fabric Manufacturing and Processing Technology
Nonwovens manufacturing technology is basically a continuous process in which web laying and web bonding are carried out by two continuous machines. Generally speaking, the forming process of nonwovens includes two basic steps, namely, forming a web first, and then bonding.
network formation
Dry-laid or air-laid is a short-fiber-based web-laying process that consists of three main steps.
- First, fiber preparation (by opening and blending process).
- Second, web formation (by carding or air twisting process).
- Finally web stacking (by parallel twisting, cross twisting and vertical twisting).
web bonding
According to the raw fiber, end use and web forming technology, web bonding technology is generally divided into three categories: mechanical bonding, chemical bonding and thermal bonding. Often, different bonding methods are used in combination to obtain products with specific properties.