Understanding The Science Of Spunbond Nonwoven Technology

The nonwovens industry has witnessed tremendous growth and diversification in last few decades. In certain applications, where uniformity of thickness is critical, nonwovens are preferred over wovens. One of the key requirements of a nonwovens production process is the use of a binder or a bonding agent to interlink the polymeric chains in a random manner. This is accomplished by means of either heat, chemicals or solvents. As a thermoplastic polymer and a low cost polymer, PP spunbond non woven fabric manufacturer is the most preferred polymer in nonwovens industry. Spunbond process consists of extruding PP in the form of filaments by means of extruding molten PP through a small orifice, stretching the extruded filaments by means of high velocity gas, and rapidly fusing and consolidating the stretched filaments to a randomized web nonwoven structure. Random interlinking of polymeric chains is a major requirement of nonwovens production, and can be attained by using a binder or a bonding agent. This interlinking can be done randomly through the use of energy, such as heat, or by use of a solvent or a chemical. Am among the least expensive and easiest thermoplastic polymers to process, Polypropylene, is, therefore, the most widely used polymer in this case. 

Measurement and Resilience

Micro-manufacturing reduces the cost of previously expensive materials. Nonwovens and, in particular, spunbond nonwovens based on Polypropylene (PP), are versatile and low cost. PP fabrics are tough and have high resistance to tearing and bursting. PP has a low specific gravity (approx. 0.90 g/cm³) and, therefore, is considered a lightweight material. PP is a non-polar and hydrophobic polymer, and thus the fabrics are hydrophobic and repel liquid water and moisture. As a result, molds and bacteria cannot grow on the fabric. Nonwoven fabrics are stable to most organic solvents and to strong acids and bases. In the presence of a stabilizer, the fabrics have good resistance to ultraviolet rays (UV). Nonwoven fabrics are stable to reactive gases and plasma. A stabilizer can be added to the fiber prior to spinning to provide the fiber with resistance to High temperature. As a result, the fiber can also have stability to the above mentioned atmospheric and chemicals agents. Flame retardancy as well/or Hydrophilic treatment can be added to the fiber prior to spinning. In the process of spunbond, polypropylene, in the form of a filament, is produced from extruding molten polypropylene, through a small orifice and rapidly stretching the filament by means of a high velocity gas. The gas instantly fuses and consolidates the filaments to form a random web, hence a nonwoven structure.

Medical and Personal Hygiene Barrier Systems

In a number of first response and health care situations, barrier systems are used to section off areas and create controlled conditions to protect personnel. One of the methods of creating these barriers, is by using low cost, high volume, webs of nonwoven polypropylene, which are manufactured by processing polypropylene fibers by a process known as film spinning. Barrier webs created using this method, have a submicron porosity and can allow water vapor to pass through while barring particulate, liquids and pathogens. These barrier webs are used in single use face masks and N95 respirators, isolation gowns, surgical drapes and shoe covers. Also being a biological and chemically inert material, nonwoven polypropylene fabrics can be used in contact dermal systems, without adversely affecting contact tissue. These fabrics have a number of uses in barriers used in feminine care, other incontinence products and in personal hygiene systems.

Optimization of Crop Protection and Soil Microclimate

Increased development of the agricultural sector through the use of new technologies and more mechanization has led to the use of nonwovens in crop protection. Nonwovens have numerous features in crop protection (i.e. covering and shielding crops, application and use of agrochemicals, protection of sensitive crops from impact of extreme climatic conditions). Shielding systems made of nonwovens are transparent to light. The majority of them are stable to the influence of UV radiation. In covering systems, Spunbond nonwovens are predominantly used. As nonwoven covers are in contact with crops, microclimates favorable for crop growth are created. Because of the presence of nonwoven covers, weed control is achieved and a favorable crop microclimate is created. As nonwoven covers control weeds, a crop microclimate favorable for crop growth is sustained.

Filtration, Industrial Packaging, Commercial

There are many different uses of spunbond nonwovens and they are biodegradable and eco-friendly. For example, the use of spunbond nonwovens in the production of reusable shopping bags will help eliminate the use of plastic shopping bags. Spunbond nonwovens are excellent for the production of sand and dust bags and other similar items. The use of this material can be extended to luggage and garment covers, and other similar items. Spunbond nonwovens can substitute a wide range of products in the packaging industry. In the filter industry, the pp spunbond nonwoven fabric has the potential of being used in HEPA filters. Due to the stable structure of spunbond nonwovens, they can be used in the furniture and automotive industries. Elsewhere, pp spunbond nonwoven fabrics have many advantages. Fabrics made of polypropylene have a low specific gravity.

About West’s Regional Textile Cluster

From the perspective of logistics and economics, sourcing pp spunbond nonwoven fabric from Gujarat, India is better for the industrial consumer. Nonwoven rolls can be locally manufactured by using the latest multi-beam extruders, ensuring uniform weight distribution and high physical strength. The costs of labor and raw materials are reasonable. The proximity of Gujarat to petrochemical parks, high purity virgin polypropylene and other petrochemical feed stocks, work in the benefit of the Nonwovens industry. Marine and Land-locked ports of Gujarat help in transport of petrochemical feedstocks and finished goods to and from Europe, Africa, Middle East and Americas. Competition is to supply the best and first raw materials to the industry.

Integration of Circular Economy and Environmental Sustainability

Rapidly, the requirement to think in the lines of environment, and especially materials, is increasing in all the sectors of the economy. In numerous aspects of the circular economy, spunbond polypropylene can play a key role, for instance, in cases of refillability and reusability. Nonwovens made from polypropylene and other mono-component polymers are reprocessable. Edge trims and nonwovens produced outside the specification are the major waste in spunbonding processes. Replacing single use paper and thin polyethylene films by nonwovens can play a key role in circular economy. Further, the environmental and circular economy benefits of such nonwovens can be improved by using bio-based and photo degradable additives.

In various health care and first response situations, nonwoven PP spunbond non woven fabric are used to construct and maintain barriers to control conditions and protect personnel. For low cost, high volume barrier webs, polymers that are extruded as fibers are processed by a process called film spinning. These barrier webs have sub micron porosity and allow air and water vapor to pass through while blocking airborne particulates and fluids and pathogens.

Conclusion

Spunbond polypropylene nonwovens have greatly helped with various pathways in the field of filtration, medical and agricultural sectors and have many advantages over fabric structures. The demand for such products in India is increasing, and the nonwoven textiles industry is focusing on advanced technologies to increase the eco-friendliness and performance of their additives. For structural performance, the best option is to integrate engineered nonwoven fabrics in final products. Nonwoven fabrics have a more recent history than other textile structures and have revolutionized the textile engineering industry. Nonwoven textile structures are based on the same principles as knitted and woven textile structures. Unlike woven and knitted textile structures, which are made by interlocking of yarns and threads, nonwovens are made by conversion of thermoplastic polymer web structures to nonwoven structures. Nonwovens are light weight, high surface area and high porosity structures. Due to the low density and high chemical and physical properties, nonwovens are finding applications in many industrial sectors. Non polar polypropylene is the main constituent in this technology. Spunbond is the process of melting polypropylene pellets.

Frequently Asked Questions (FAQs)

What is PP Spunbond Non Woven Fabric and how is it manufactured?

PP Spunbond Non Woven Fabric is manufactured by extrusion of the melt of polypropylene through a large number of very small holes of a spinneret. The filaments are randomly deposited on a moving belt and thermally bonded.

What are the key advantages of using PP spunbond nonwoven fabrics over traditional woven materials?

PP spunbond nonwoven fabrics are lightweight and flexible with high tensile strength compared to woven fabrics. Spunbond nonwovens are also hydrophilic, have high breathability and chemical resistance compared to woven fabrics.

In what ways is PP spunbond nonwoven fabric used in agricultural crop protection?

PP spunbond nonwovens are used in the agricultural sector as greenhouse liners and breathable row covers for frost, heat and insect protection and for hail storm sheltering. They allow air and water to reach the crops and let sun rays through to the plants.

Who is the largest manufacturer of PP Spunbond Non Woven Fabric?

Singhal Landscape Geotextile is the largest manufacturer of high performance PP Spunbond Non Woven Fabrics. These nonwovens are used in agriculture, industry and medicine.

Why should I choose Singhal Landscape Geotextile for nonwoven fabrics?

In addition to high UV stability, Singhal Landscape Geotextile manufactures PP Spunbond Non Woven Fabrics with high tear strength to achieve durability, high GSM, and in a range of colours to meet the needs of various applications.