Spunlaced composite technology
The research and development of spunlaced composite technology not only overcomes the limitations of some non-woven products, increases the variety of colors, greatly expands the application fields of spunlace nonwovens, but also promotes the technology of spunlace and even the entire nonwovens. Development and improvement. (1) Spunlace and wood pulp air-laid composite technology. Since the wood pulp price is much cheaper than the staple fiber commonly used for the spunlace process, the fluff pulp has good hygroscopicity and feel, and therefore the finished product is cheaper than the all-fiber product and is competitive in price, but in the process The filter system is very demanding. The product can be used as a core material for diapers (70% g/m2), diapers and sanitary napkins. The equipment for the hydroentanglement of spunlace and wood pulp is Aquapulp from Fleissner and Airlace from Perfojet. (2) Spunlace and filament spunbonded web technology. The composite product of this method combines both the strength and short fibers of the municipality with good absorption performance of the spunbond nonwoven fabric, and is evener and softer than the spunbonded nonwoven fabric, and has the function of absorbing water and absorbing oil, and has higher strength, and can be used as a food wrapper , decorative cloths, and cleaning cloths. The equipment combining the spunlace and spunbond method includes Aquqspun and Aquasplit from Flerssner. And Freudenberg's Evolon processing technology. (3) Spunlace and wet-laid composite technology. A typical process Detex's Hydraspun technology consists of Detex wet-laid technology combined with Japan's Unicharm's registered Soflom spunlace method. Hyderaspun wet spunlace nonwovens have the same strength and softness as traditional dry spunlace nonwovens, and the wet spunlaced nonwovens are free from lint, and their seam stretch strength is dry spunlace Twice as non-woven, it is especially suitable for the field of clothing.
Fabric finishing function new technology
In 1995, the American BBA company developed the Interspun process and applied for a patent. Using this process, the surface of the fabric is treated with hydroentanglement, which can have a positive influence on the structure and properties of the fabric. In 1998, BBA signed a cooperation agreement with Fleissner and Fleissner was the exclusive supplier of this technology. Fleissner's Aquatex is a system that uses a spunlace head to treat woven fabrics and is known as a revolutionary measure for woven finishing. After the woven fabric is spun-laced, the yarn in the fabric is loosened and the fabric is effectively cleaned. According to the arrangement of the water-jet puncture head, the effect of the peach skin on both sides or one side of the fabric can be obtained; The stress generated during the process of the fabric makes the warp yarn more uniform, thereby improving the hand and appearance of the fabric, increasing the thickness of the fabric, making the fabric glossy and soft, the wear resistance is more than 300% before the untreated, the slipping of the sewing place The phenomenon is more than doubled, anti-pilling performance is improved, wrinkle resistance is improved, the fabric surface is more uniform, the pores of the fabric are reduced, and the distribution is more uniform. It is used for the dyeing of cotton fabrics to be treated like mercerization. Therefore, the process of desizing, scouring, mercerizing, sanding and the like can be eliminated after the spunlace treatment, and the bleaching process can also be simplified, which has obvious comprehensive economic benefits. Products are widely used in decorative cloth, filter cloth, home textiles, clothing, automotive airbag fabrics.
New progress in spunlace technology
A study by Memis Acar of the Department of Mechanical Engineering at the University of Loughborough in the UK showed that the spunlace process can process glass fibers and produce industrial fabrics. Due to the non-crimping of glass fibers, the traditional concept is that dry non-woven processes are difficult to process. Most glass fiber nonwovens are generally processed by needle punching or wet processing, but NCSU has successfully developed spunlaced nonwovens of glass fiber and polyester blends. Diameter of 16um of coarse denier glass fiber, it is very difficult to process with water puncture, if mixed with fine diameter glass fiber with diameter of 6.5um, it is beneficial to improve the strength of spunlace non-woven fabric, so different denier glass fiber blend, fine denier fiber Spunlace is beneficial, and coarse denier fibers help to improve the strength of spunlace nonwovens. If the glass fiber is mixed with textile staple fiber such as polyester, the hydroentangling ability can be enhanced. Blending glass fiber with low-melting polyester can produce fiber-reinforced polyester composites. Researchers at the University of Aubrum in the United States used NGSN equipment to find that the spunlace process can produce homespun fabrics that are produced by acupuncture and hot rolling processes. The researchers found that changing the spunlace pressure and the time the web is exposed to the water needle can change the pore size of the geotextile. The pore size is a key indicator of geotextiles, especially when used as a sand filter, allowing the flow of water to pass through and prevent soil movement. Extending the time of the web to be affected by the water needle or increasing the pressure of the spunlace can enhance the hydroentangling effect of the web and reduce the pore size of the fabric. The aperture size can be adjusted online without stopping, thereby increasing the production speed and is more flexible and convenient than other geotextiles.
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