The dyeing of non-wovens in fabric form is of interest for a range of applications especially aesthetics. In this work, needle-punched non-woven fabrics were prepared by employing polyethylene-terephthalate (PET) fibres of two different linear density and same mean fibre length in four different fibre linear density ratios and three different fabric mass areal densities, while keeping all other process and material variables constant. The objectives of the study were to find out the saturation point in the dyeing profile of needle-punched non-wovens by varying aforementioned process variables and, for the first time, compare different industrially relevant conventional fabric dyeing methods (Jet, Package and Jigger dyeing) in terms of physical, mechanical and colour fastness properties. In case of Jet and Package dyeing, non-woven fabric was successfully dyed without any structural reorientation while fabric sample deformation is reported in Jigger dyeing process. Furthermore, tensile strength (in newtons) of samples was increased, while air permeability (in mm/s) was decreased due to the slight compactness of structure after the dyeing process.

中文翻译：

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针刺聚对苯二甲酸乙二醇酯无纺布染色试验研究

织物形式的非织造布的染色对一系列应用尤其是美学应用很有吸引力。在这项工作中，通过使用两种不同线密度和相同平均纤维长度的聚对苯二甲酸乙二醇酯 (PET) 纤维，以四种不同的纤维线密度比和三种不同的织物质量面密度制备针刺无纺布，同时保持所有其他工艺和材料变量不变。该研究的目的是通过改变上述工艺变量找出针刺非织造布染色曲线中的饱和点，并首次比较不同的工业相关常规织物染色方法（喷射染色、卷装染色和跳汰机染色） ) 在物理、机械和色牢度性能方面。在喷射染色和卷装染色的情况下，非织造布在没有任何结构重新定向的情况下成功染色，而在跳汰机染色过程中报告了织物样品变形。此外，由于染色过程后结构的轻微致密，样品的拉伸强度（以牛顿为单位）增加，而透气性（以毫米/秒为单位）降低。