Spunbond and nonwoven fabrics are both types of nonwoven fabrics, but there are some distinct differences in their structure, manufacturing process, and properties.
Spunbond fabric is produced by mechanically bonding random-laid fibres into a cohesive fabric using thermal, mechanical, or chemical methods. The fibres are typically continuous filaments, which are drawn from spinnerets and placed into a random pattern on a conveyor belt. The fibres are then bonded together using various techniques, such as point-to-point bonding, needling, or hydroentanglement. The resulting fabric has a dense and uniform structure with good physical properties, such as strength and abrasion resistance.
Nonwoven fabric, also known as nonwoven cloth, is a type of fabric made by interlocking or entangling fibres through various processes such as mechanical interlocking, chemical bonding, or thermal fusion. It is made up of random fibres or filaments that are laid or blown onto a conveyor belt or drum, and then bonded together using heat, pressure, or chemicals to form a cohesive fabric. Nonwoven fabrics have a more open and irregular structure compared to spunbond fabric, providing different properties such as higher porosity, flexibility, and breathability.
The main difference between spunbond and nonwoven fabrics is their structure and manufacturing process. Spunbond fabric has a dense and uniform structure with good physical properties, while nonwoven fabric has a more open and irregular structure with different properties such as higher porosity, flexibility, and breathability. This difference in structure and properties allows nonwoven fabric to be used in applications that require a combination of strength, softness, and breathability, such as medical dressings, filters, and sanitary napkins.
In addition to their differences in structure and properties, spunbond and nonwoven fabrics also have different manufacturing processes and raw materials requirements. Spunbond fabric is produced using mechanical bonding methods, which require less energy and chemicals compared to nonwoven fabric, which uses chemical binders or thermal fusion to bond the fibres together. However, the raw materials used for spunbond fabric are typically continuous filaments, which require more complex manufacturing equipment compared to short-staple fibres used for nonwoven fabric.
Overall, spunbond and nonwoven fabrics are both nonwoven fabrics with distinct differences in structure, properties, and manufacturing processes. The selection of the appropriate fabric type depends on the specific application requirements, such as strength, softness, breathability, and cost.
