Summary: During the 1970s, Dupont developed ...
During the 1970s, Dupont developed spunlace nonwoven
fabric, which is now used for durable nonwoven products. The fabric is characterized by its strong physical qualities, low linting, water repellent properties, and soft hand feeling. It is primarily used for low weight products such as cotton pads and surgical disposables.Spunlace nonwovens are made by a mechanical process that involves a high-pressure water spray. The high-pressure water jets are generated by hydroentanglement, and then a series of short fibers is laced together. The fiber assemblies are staggered in arrangement.Spunlace nonwovens are used in a variety of end-use applications, including healthcare, personal care, and toilet care. They are also used in disposable nonwoven products, such as baby wipes.As the population increases, the demand for spunlace nonwovens will also increase. In addition, as medical applications become more popular, the need for new products and improved processes will be increased.
During the process of spunlace nonwoven, fibers are entangled with jets of high pressure water. The entangled fibers are used as the fabric's strengthening materials.The production process of spunlace nonwoven fabric was developed in the 1950s. It has replaced the traditional single-layer nonwoven fabric manufacturing process.The first step of the process is to form a precursor web. The precursor web is created by air-laying processes. This precursor web is then water jetted to create a layered web. This process can be used for a variety of substrates, including pulp and spunbond webs. The water jets are aimed onto the web at a pressure of around 2200 psi. This produces a strong, cohesive web.The second step involves slitting the precursor web. This process involves placing the slitted precursor web into rows with a spacing of about 3-5 mm.The water pressure is then increased from the first to the last injector. This process is used to reduce the water content in the fiber web, thereby reducing the amount of energy used in the drying process.Various materials are used to produce spunlace nonwoven fabric. The most common ones are viscose and polyester. Alternatively, cellulose, tencel, bamboo, and woodpulp can also be used. The fabric has excellent physical properties and moisture absorption.Spunlace fabric has a soft feel and excellent water absorption.
In fact, it can be used in sanitary napkins, baby care, toilet care, medical, and beauty nonwoven materials. It also offers certain strength and elongation at break.Spunlace nonwoven fabric can be used in the manufacture of "sandwich" type products. It is available in seven blends, and its price depends on the color. It is also able to absorb liquids and is tear-resistant.It is commonly used in the manufacture of wipes. In the last decade, plastic-free products have been a driver of nonwovens. Moreover, the European Union's single use plastics directive has prompted manufacturers to reduce plastic usage. This will keep spunlace nonwovens dominant in wipes through 2026.Several types of spunlace nonwoven fabric are used in a wide variety of applications. These materials are often used in medical wipes. However, they are also used in beauty and personal care products.Spunlace nonwoven fabric continues to improve its technology. It can be made from a variety of raw materials, including woodpulp, polyester, and polypropylene.
It also has various finishing technologies.Spunlace nonwoven fabric is formed by water jets that penetrate the web and entangle fibers. The process is also known as hydro-entangled. This type of technology can save energy and resources, and produce non-polluting nonwovens.This technology is also suitable for producing composites and reinforcement scrims. As the demand for natural fibres increases, the need for spunlace products is also growing. These products can provide a more sustainable solution for hygiene products.Compared to traditional spinning technologies, spunlace nonwovens have less energy consumption, resulting in cost savings. The report from Smithers Global Research also reveals that the global demand for sustainable nonwovens is growing, and will reach USD million in 2028.Spunlaced nonwovens are used for various applications. They can be used as landing zones or as the material for sanitary products such as diapers and incontinence products. They can also be laminated onto disposable garments.