The Two Step Advantage: How Yuzhimu’s Manufacturing Process Shapes Its Unique Properties

First Step: Yarn Formation

The process begins with the use of "bi-component" yarns. These yarns are composed of a higher-melting polymer that forms a stiff core filament, surrounded by a lower-melting skin polymer. The production of these bi -component yarns requires precise control of the polymer melting and extrusion processes. The polymers are melted separately and then extruded through fine nozzles to form continuous filaments. These filaments are then combined to form the bi-component yarn, which has distinct characteristics due to the different properties of the core and skin polymers.

Second Step: Nonwoven Web Formation and Consolidation

Large parallel sets of the bi - component yarn bundles are fed onto a metal mesh. The yarns are laid down in a random pattern to form an intricately shaped non - woven web. This web is then consolidated by heating it to a temperature at which the low-melting skin polymer melts. As the skin polymer melts, the myriads of filament intersections are "glued" together, forming a very stiff, yet open and dimensionally stable non - woven structure. This two - step process allows for greater control over the final properties of the nonwoven fabric compared to single-step manufacturing methods.

Key Properties

High Strength and Durability

Yuzhimu two - step nonwoven fabric exhibits excellent tensile strength and tear resistance. The combination of the stiff core filament and the bonded filament intersections provides a strong framework that can withstand significant mechanical forces. This makes it ideal for applications where durability is crucial, such as in carpet backings. In automotive carpeting, for example, it can withstand the stresses and strains caused by regular use, including foot traffic and the movement of objects within the vehicle.

Good Air and Liquid Permeability

Despite its high strength, the fabric has an open structure due to the way the yarns are laid down and consolidated. This open structure allows for good air and liquid permeability. In filtration applications, it can effectively filter out particles while allowing the passage of air or liquid. For instance, it can be used as a filtration support medium in air filters or liquid filtration systems, where its ability to balance strength and permeability is essential.

Dimensional Stability

The two - step manufacturing process ensures that Yuzhimu nonwoven fabric has excellent dimensional stability. It does not shrink or stretch significantly under normal conditions or when exposed to heat or moisture. This property is particularly important in applications where precise dimensions are required, such as in the production of technical textiles for industrial use. In carpet backings, it helps to maintain the shape and size of the carpet during manufacturing, installation, and use, preventing problems such as warping or misalignment.

In conclusion, Yuzhimu two-step nonwoven fabric is a highly versatile and innovative material that has made a significant impact in the nonwoven industry. Its unique manufacturing process, excellent properties, and wide range of applications make it a preferred choice for many industries, and its potential for further development in terms of sustainability holds great promise for the future.