Study On The Softness Of The Jute/Cotton Knitting Fabrics

This study is mainly about the softness finishing on the jute/cotton knitting fabrics. In this paper, the super softness finishing method is used, which includes the biochemical method as well as the chemical softener to improve the softness and prickle sense of the jute/cotton knitting fabrics. The chemical and enzyme methods have limitation respectively, but the combination of the two ways can make good use of the excellent removing of the chemical method with the soft and efficient of the enzyme methods. By this way, when the good effect of the fabrics finishing is gained, the strength and other properities of the fabrics are also kept in some way.According to the experiment, the degumming on the fabrics of knitting structure is first introduced, which is to prove the feasibility of the softness on the knitting structure. In this process, the orthogonal method is used to analyze the four factors mainly affecting the process such as the concentration of NaOH, time, temperature and liquid bath ratio. The best process parameters are as follows : the concentration of NaOH : 15g/1; time: 2hours; the liquid bath ratio: 1:40; the temperature: 100°C. The properties of fabrics after the degumming process show the possibility of softening the jute/cotton knitting fabrics for underclothes by such pretreatment.In the same way, the best parameters of the scourzyme(?)301L and cellusoft(?) L can also be gained. The parameters of scourzyme are as follows: the scourzyme(?)301L : 3%; time: 30minutes; the liquid bath ratio: 1:40; the temperature: 50°C; and the cellusoft(?)L are: the cellusoft: 2.5%; the temperature: 50°C; time: 30 minutes. The properties of fabrics after the enzyme process show that the enzymes are effective on the finishing of the knitting fabrics, but comparing with the chemical methods, the enzyme methods are too soft to remove the lignin especially. So it needs to combine with the chemical method on the fabrics finishing.After all the preparations, according to different super soft finishing methods on the fabrics and the properties of the finished fabrics, the optimum super soft process is gained.When the soft finishing of the jute/cotton knitting fabrics is finished, its prickle sense is one important index to evaluate and measure the fabric's quality, but the prickle evalution by means of the fuzzing mathematics is first introduced. It can avoid subjective influences and gain the index about the prickle sense by some important physics properties which are mainly influenced the prickle sense of the fabrics, and also gain the importance of each parameter so that to get the optimum finishing process ,which is based on the prickle sense and the properties of the jute/cotton knitting fabrics both.