What Is Spunbond Fabric Machine – Polymers Used in Making

 

Spunbond fabrics are produced by depositing extruded filaments onto a belt, which we usually call a collecting belt in an identical random way supported by bonding the fibers. It is said that China spunbond fabric machine is one of the essential resources to work in many applications. The fibers in it are separated during the web laying process by air jets or electrostatic charges.

After that, the collecting surface is generally punctured to stop the air steam from bouncing back and straightforwardly carrying the fibers. The bonding imparts strength and integrity to the web by applying heated rolls and needles to melt the polymers partially, and fibers are fused.

Since molecular orientation enhances the melting point, fibers that are not extremely formed can be accepted as thermal binding fibers. Moreover, polyethylene or ethylene-propylene copolymers are used as low melting bonding sites. The products of spunbond are employed in carpet backing, disposable medical products, geotextiles, and whatnot. Since the fabric production is combined with fiber production, the process is quite economical than staple fiber to make nonwoven fabrics.

Polymers Used by Spunbond Fabric Machine:

Polypropylene:

It’s one of the most extensively used polymers for spunbond nonwovens composition. It provides the highest yield and coverage power at the most economical cost because of low frequency.

Polyester:

It’s used in several commercial spunbond products and offers certain advantages over polypropylene – but they’re costly. As compared to polypropylene, the scrap of polyester is not readily recycled in manufacturing.

Nylon:

Spunbond fabrics are made from both nylon-6 and nylon-6,6. Nylon is highly energy-intensive and expensive compared to other polymers. Unlike olefins and polyester fabrics, those made from nylon readily absorb water through hydrogen bonding between the amide and water molecules.

Rayons:

Many types of rayons have successfully been processed into usable spunbond webs using wet spinning methods. Rayon has the best advantages, but one of them is at the top, and that is: it offers good drape properties and softness to the web.