Spunlace Nonwoven

Spunlaced non-woven fabric is to spray high-pressure micro water into one or more layers of fiber network, so that the fibers intertwine with each other, so that the fiber network can be reinforced and have a certain strength. The fabric obtained is Spunlaced non-woven fabric. Its fiber raw materials can be polyester, nylon, polypropylene, viscose fiber, chitin fiber, superfine fiber, Tencel, silk, bamboo fiber, wood pulp fiber, seaweed fiber, etc.

Spunlace non woven fabric is the main raw material of natural fiber, conventional fiber, differential fiber and high-function fiber. The principle of high-pressure micro water jet is applied to one or more layers of fiber net to make fibers intertwined with each other. The product features soft hand, fluffy, high moisture absorption, and certain oil absorption effect Surgical cover cloth, medical dressing materials, wound dressing and so on

catalogue

1. Main raw materials

2. Principle of machining

3 characteristics

4 product application

5 product features

6 production technology

7. New technology progress

8 new products

▪   MIRATEC fabric

▪   Nike non woven Sweatshirt

▪   Evolon

9 domestic situation

▪   production line

▪   Production technology of Spunlaced cloth

▪   Scientific research development

Editing voice of main raw materials

(1) Natural fiber: cotton, wool, hemp and silk;

(2) Conventional fiber: viscose fiber, polyester fiber, acetate fiber, polypropylene fiber, polyamide fiber;

(3) Differential fiber: superfine fiber, profiled fiber, low melting point fiber, high crimp fiber, antistatic fiber;

(4) High functional fiber: aromatic polyamide fiber, carbon fiber, metal fiber[ 1]

The principle of processing

The principle of spunlaced fiber reinforcement is similar to that of needling, but instead of needling, it uses multiple micro water jets produced by high pressure - Spunlaced machine to jet fiber. After the water jet passes through the fiber net, it is entrusted to hold the rebound of the net curtain and insert the fiber net again. Therefore, under the hydraulic effect of the high-speed water jet in different directions, the fibers in the fiber net produce displacement, insertion, entanglement and cohesion, so as to strengthen the fiber net[ 2]

Feature editing voice

1. Flexible entanglement does not affect the original characteristics of the fiber and does not damage the fiber

2. The appearance is closer to traditional textiles than other nonwovens

3. High strength and low fuzziness

4. High moisture absorption and fast moisture absorption

5. Good air permeability

6. Soft handle and good drapability

Printed Spunlaced Nonwovens

Printed spunlaced nonwovens (1 sheet)

7. Varied appearance

8. No adhesive reinforcement and washability

9. Long production process and large floor area

10. Complex equipment and high water quality requirements

11. Large energy consumption of spunlace machine [2]

Product application editing voice

The application of Spunlaced non-woven fabric includes medical curtain, surgical clothing, surgical cover cloth, medical dressing material, wound dressing, medical gauze, aviation rag, clothing lining base cloth, coating base cloth, disposable material, instrument advanced rag, electronic industry advanced rag, towel, cosmetic cotton, wet towel, mask coating material, etc[ 2]

Product feature editing voice

Soft, fluffy, high moisture absorption, oil absorption effect

Production technology editor's voice

The research and development of Spunlaced Composite technology not only overcomes the limitations of some nonwovens, increases the variety of designs and colors, greatly expands the application field of spunlaced nonwovens, but also promotes the development and improvement of spunlaced technology and even the whole nonwovens process.

(1) The composite technology of spunlace and wood pulp air net forming. Because the price of wood pulp is much cheaper than that of short fiber commonly used in Spunlaced method, and the moisture absorption and handle of fluff pulp are very good, the product made of wood pulp is cheaper than that of all fiber products, which is very competitive in price, but it has high requirements for filtration system in process. Products can be used as wipes (70% g / m2), diapers and sanitary napkins core materials. The equipment of spunlace and wood pulp air net forming are aquapump of Fleissner company and airlice of perfojet company.

(2) Spunlaced and filament spun viscose web composite technology. Compared with the spunbonded nonwovens, the spunbonded nonwovens have better strength and short fiber absorption performance, and are more uniform and soft, with water and oil absorption function, and higher strength, which can be used as food wrapping cloth, decorative cloth and cleaning cloth. The composite equipment of spunlace and spunbond is aquqspun and aquasplit of flerssner company. And Freudenberg's evolon processing technology.

(3) Spunlaced and wet netting composite technology. The typical process is hydrotraspun technology of detex company, which is composed of wet netting technology of detex company and soflom Spunlaced method registered by unicharm company of Japan. The strength and softness of hydraspun wet spunlaced nonwovens are equal to or even more than that of traditional dry spunlaced nonwovens. Moreover, wet spunlaced nonwovens do not shed wool chips, and their seam tensile strength is twice that of dry spunlaced nonwovens, which is especially suitable for the field of clothing.

New development of editing technology

Memis acar, from the Department of mechanical engineering, Loughborough University, UK, has proved that spunlaced process can process glass fiber and produce industrial cloth. Due to the non crimp of glass fiber, the traditional idea is that dry nonwoven process is difficult to process. Most glass fiber nonwovens are usually processed by needling or wet process, but North Carolina State University (NCSU) has successfully developed spunlaced nonwovens blended with glass fiber and polyester fiber. The coarse denier glass fiber with diameter of 16um is difficult to be processed by Spunlaced method. If it is mixed with fine denier glass fiber with diameter of 6.5um, it is beneficial to improve the strength of spunlaced nonwovens. Therefore, the fine denier fiber is beneficial to Spunlaced, and the coarse denier fiber is beneficial to improve the strength of spunlaced nonwovens. If glass fiber is mixed with textile staple fiber such as polyester, the ability of spunlaced entanglement can be enhanced. Glass fiber reinforced polyester composites can be produced by mixing glass fiber with low melting point polyester.

Using NGSN equipment, researchers from Auburn University found that Spunlaced geotextiles can be produced by needling and hot rolling. The researchers found that the pore size of geotextiles can be changed by changing the spunlace pressure and the time the web is exposed to the water needle. Pore size is the key index of geotextile, especially when it is used as sand filter to allow water to pass through and prevent soil movement. By prolonging the time when the web is under the action of water needle or increasing the pressure of water needle, the entanglement effect of water needle can be enhanced and the pore size of the fabric can be reduced. The pore size can be adjusted online without stopping, so as to improve the production speed, which is more flexible and simple than other processing technologies of geotextile.

New technology of fabric functional finishing: in 1995, BBA company of the United States developed interspun process and applied for a patent. Using this technology, the surface of fabric can be treated by spunlace, which has a positive effect on the structure and properties of fabric. In 1998, BBA and Fleissner signed a cooperation agreement. Fleissner is the exclusive machine supplier of this technology. The aquatex of Fleissner company is a system that uses water jet to treat woven fabrics, which is called a revolutionary measure for the finishing process of woven fabrics. After Spunlaced treatment, the yarn in the fabric is loosened and the fabric is effectively cleaned; The peach skin effect can be obtained on both sides or one side of the fabric according to the different arrangement of the water spikes; It can also eliminate the stress produced in the process of the fabric, make the warp yarn more uniform, so as to improve the handle and appearance of the fabric, increase the thickness of the fabric, make the fabric soft luster, wear resistance is more than 300% of that before treatment, the slippage phenomenon at the sewing place is reduced by more than one time, the anti pilling performance is improved, the wrinkle resistance is improved, the cloth surface is more uniform, and the pores on the cloth surface are reduced, It is more evenly distributed and can be used for dyeing cotton fabric as if it had been mercerized. Therefore, after Spunlaced treatment, the desizing, scouring, mercerizing and sanding processes can be cancelled, and the bleaching process can be simplified, which has obvious comprehensive economic benefits. Products are widely used in decorative cloth, filter cloth, household textiles, clothing, automotive safety airbag fabrics.

New product editing voice