Hot air, hot rolling and spunbonded nonwovens are often used in medical and health nonwovens such as sanitary napkins and adult diapers. Among them, hot air nonwovens have fluffy materials, strong permeability and superior skin affinity. Spunlaced nonwovens are sanitary and soft, and are gradually used in the field of disposable sanitary products. In this study, the super Imitation cotton polyester and a certain proportion of ES fiber were combed into a net by water pricking technology and hot air drying, and then the super Imitation cotton polyester / es nonwovens with high added value, good water permeability, good impermeability and good comfort were produced.
Based on the development of super Imitation cotton polyester spunlaced nonwovens, this paper looks for new spunlaced nonwovens that can replace sanitary napkins, adult diapers and other sanitary materials. Super Imitation cotton polyester not only has better fiber performance, but also looks and feels like cotton. Therefore, it can be used as a substitute for cotton fiber to alleviate the shortage of domestic cotton fiber supply. Through the test of super Imitation cotton polyester fiber, it can be seen that the tensile elongation, hydrophilicity and moisture regain of super Imitation cotton polyester fiber are significantly higher than those of ordinary polyester fiber.
This paper discusses the relationship between the basic properties, breaking strength, oiling rate, water permeability time and reverse permeability of super Imitation cotton polyester / es nonwovens. The results show that the thickness, strength and air permeability of super Imitation cotton / es Spunlaced / hot air nonwovens increase with the increase of ES fiber content; The surface density is directly proportional to thickness and strength and inversely proportional to air permeability; With the increase of water needle energy, its strength first increases and then decreases; When the surface density of the material is greater than 50g / m2, the change of pore diameter fluctuates in a certain range without hairy ball.
From the research and analysis of material comfort, it can be seen that the cold and warm feeling of 20% ES / super Imitation cotton Spunlaced / hot air material is closest to es hot air nonwovens, but there is still a certain gap; The bending resistance of 20% ES / super Imitation cotton Spunlaced / hot air nonwovens in MD and CD directions is better than that of super Imitation cotton spunlaced nonwovens and ordinary polyester spunlaced nonwovens; The compression work of super Imitation cotton Spunlaced material is much less than that of ES hot air material, indicating that its fluffy and compression elasticity are not as good as ES hot air material.
In order to solve the problems of long liquid penetration time, large surface tension, large liquid contact angle and no wetting of super Imitation cotton polyester / es nonwoven adult diapers, tf629c is selected for hydrophilic finishing, testing and Research on nonwovens, which has little skin irritation. After hydrophilic finishing, the liquid penetration time and reverse osmosis were optimized, and the best process parameters were selected: oil rate 8.42% Surface density 45g / m2 The average pore diameter of the material is 78.5um The thickness is 0.88mm.
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