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Spunlace production line: spunlace nonwoven process production process

Tiempo de liberación:

2023-02-27

spunlace production line manufacturers said that spunlace non-woven fabric process, also known as spunlace or spunlace process, is a new type of non-woven fabric processing technology. The spunlaced non-woven fabric process produces a hydraulic effect through a continuous jet of high-pressure water flow. Under this effect, the arranged fibers begin to surge, shift, rearrange and entangle with each other. Under this action, the fiber web is strengthened and has certain physical and mechanical properties. The mechanism of spunlace reinforcement technology is as follows: after the fiber web enters the spunlace area through the net curtain, the high-pressure water flow forms a continuous "water needle", which is cylindrical in shape and vertically shoots to the fiber web through the spunlace head and the water needle plate; In this process, the fibers are brought into the bottom of the net from the surface by the water needles and form entanglements. Therefore, the fiber web is subjected to the dual effects of the front and rear water columns during the entire spunlace process, forming entanglements in different directions. These entanglements are irregular and achieve a reinforcing effect, thereby forming a spunlace nonwoven fabric. The manufacturer of

spunlace production line said that the advantage of spunlace nonwoven fabric is that the reinforcement of fiber web depends entirely on the entanglement between fibers under the holding condition of non-product ji, the rotation and sliding of fibers are relatively large, and the compression and deformation resistance under stress is strong. Therefore, spunlace nonwoven fabric has the characteristics of high strength, soft hand feeling, no chemical adhesive and good air permeability.

The process flow chart of spunlaced nonwovens is as follows: fiber feeding → pre-opening → fine opening → mixing → pre-feeding → carding → netting → drafting → spunlacing → drying → cutting → winding → warehousing.

(1) Fiber preparation: fiber is unpacked and fed, accurately weighed by an electronic scale, and quantitatively transported to a coarse opener and a cotton blender. The fiber raw material is finely opened in a fine opener behind the cotton blender and enters a cotton storage box through a cotton blower. The selection of fiber raw materials can be considered from the aspects of cost, processability, use, etc. Most natural fibers and chemical fibers can be used as raw materials for nonwovens.

(2) Mixed carding and fiber reticulating: The main function of mixed carding is to mix the fibers evenly to form single fibers, and then further mix to remove impurities to form a fiber reticulating; only when the carded reticulating quality is good, the produced spunlace The non-woven fabric has good air permeability and more uniform pore size distribution; the fiber reticulating is the loose fiber structure of the fiber web formed by the fiber raw material; the fiber web is selected according to the web, it can be short fibers or filaments; there are three main methods of web formation: dry, wet and polymer extrusion. In this paper, the web forming method of aramid spunlace nonwovens is dry web

(3) drafting spunlace reinforcement: fiber web reinforcement is to strengthen the fibers in the fiber web through a certain process, so that the fiber web has higher strength. Therefore, the reinforcing fiber web has good mechanical properties, and the appearance of the product is good. The aramid spunlace nonwoven introduced in this chapter uses one of the reinforcement processes, the spunlace reinforcement process.

(4) Functional finishing: Spunlace production line manufacturers said that the functional finishing of nonwovens can improve the performance of the product, give the product new functions, and improve the appearance of the product. Through mechanical, chemical and other methods, non-woven fabrics are transformed into products and put into use. For non-woven fabrics, coating, laminating and other finishing methods can be used to improve product applicability and service life.