In personal care products, whether it is wet wipes for adults or infants, or wipes for personal cleaning. The main material is non-woven fabric. Non-woven fabrics have the advantages of light weight, low price, no pollution, and mass production. It quickly became the main material of personal cleaning wipes. Now, the problem that the non-woven fabric industry needs to face is how to highlight its own advantages and technical advantages and become the leading material in the personal care wipes industry.
The drying temperature of superfine fiber is set 10℃～15℃ higher than that of ordinary polyester and nylon products of the same gram weight. After the spunlace fiber is opened, the moisture absorption performance of the microfiber is greatly improved, and the dense structure of the microfiber spunlace cloth affects the penetration of the heat of the dryer, making the microfiber products more difficult to dry than ordinary polyester and nylon products. The pressure of the first spunlace is preferably set at 70% to 80% of the design value, and the pressure of the second and third spunlace is increased in sequence to reach the design value, and the product effect is the best. In addition, the corresponding modification of the drafting machine, the spunlace drum and the net curtain will also optimize the product quality, making the product more even, smooth, soft, delicate, and less burr. If the setting is too high, it will cause the fiber to open prematurely and form a denser layer of fiber on the surface of the product, which will weaken the effect of the second and third spunlace and cause the phenomenon of "raw rice" in the product. If the pre-needle pressure is set too low, it will greatly affect the final fiber entanglement and fiber opening effect. The study found that in order to obtain a good entanglement effect, the key to selecting a reasonable jet plate and optimizing the ratio of spunlace pressure.
For fiber entanglement and opening, the setting of spunlace process parameters is particularly important. If the fiber opening rate is high (greater than 60%), the product is soft and delicate, uniform and dense, and high strength; if the fiber opening rate is low, the characteristics of ultrafine fibers cannot be achieved. The degree of microfiber opening rate has a great influence on the performance of the product. Spunlacing not only makes the orange petal-shaped short fibers fully split into ultra-fine fibers, but also makes them entangle with each other under the action of high-pressure micro water jets, so that the fiber web can be reinforced and possess certain physical and mechanical properties. For spunbond spunlace non-woven wipes, spunlace is a key process.
At the same time, the spunlace non-woven fabric overcomes the shortcomings of the spun-bonded non-woven fabric, its fabric surface is flatter and smoother, the product is softer, and the strength far exceeds that of the short fiber non-woven fabric. After consolidation, a special three-dimensional structure can be formed, with a denser fiber structure, better moisture absorption and air permeability. It is worth noting that the fineness of the composite superfine fiber can reach 0.08 dtex after spunlacing, and the specific surface area of the fiber is increased.
