聚乙烯/聚酯纤维卷曲对热风非织造材料性能的影响

为获得蓬松、棉柔兼具丝柔爽滑特点的卫生用热风非织造材料,选取皮芯结构的聚乙烯/聚酯纤维为原料,通过控制生产工艺改变纤维的卷曲度,制备20 g/m^2的不同结构的热风非织造材料。通过对热风非织造材料性能的测试分析,研究聚乙烯/聚酯纤维的卷曲度对热风非织造材料的机械、透气、透湿、渗透、回渗、摩擦性能的影响。结果表明:聚乙烯/聚酯纤维的卷曲度降低,制得的热风非织造材料的液体渗透速率、摩擦性能均有所提高,机械、透气、透湿性能基本不变。当聚乙烯/聚酯纤维的卷曲度为12.08%时,制得的热风非织造材料的渗透时间为0.61 s,回渗量为0.04 g,试样横、纵向摩擦因数分别为0.217、0.190,其透湿、渗透、摩擦性能均优于同面密度下的纺粘非织造材料,可应用于一次性卫生用品面层材料。

Effect of curl of polyethylene/polyester fiber on the properties of hot-air through nonwovens

In order to obtain a fluffy, soft, hygienic hot-air through nonwovens which has the advantages of silky and smooth, the polyethylene/polyester fiber of the core-sheath structure was selected as the raw material, and the 20 g/m^2 hot-air through nonwovens which have difference structure were prepared by changing the crimp and number of crimps of the fiber. Through the test and analysis of the performance of hot-air through nonwovens, the effect of the curl of polyethylene/polyester fibers on the mechanics, permeability, moisture, penetration, osmosis, and friction properties were studied. The results showed that with the reduce of curl degree of polyethylene/polyester fiber, the permeation and friction properties improved while the mechanical, permeability and moisture properties unchanged, when the crimp is 12.08%, the penetration time of the prepared hot air nonwovens is 0.61 s, the amount of osmosis is 0.04 g, and the longitudinal and transverse friction properties of the sample is 0.217 and 0.190. The permeability, moisture, penetration and friction properties are better than spun-bond nonwovens under the same weight, the hot-air through nonwovens can be applied to the surface material of disposable hygiene products.