Comfort, Luxury Linen Knit Product Development

With the improvement of people's living standard and rapid development of science and technology, people have put forward higher request for the textile. Comfort and hygiene of the dress have already become people's primary pursuit. Under this trend, the flax fabrics famous for 'fiber emperor' are greatly favored by people and the knitted fabrics are still more.Flax has many kinds of fine performance, such as ventilative, cool, firm and hygienic properties such as anti-bacteria, antistatic and ultraviolet-proof, but the scratch iness of the flax has been a main obstacle of the development of top-grade flax fabric. In order to meet people's demands for top-grade flax knitted fabrics, this article plan to develop top-grade flax knitting fabric. The emphasis of our research is to dispel scratchiness of flax fabric and improve flax fabric's hand feeling , softness and elasticity.In order to make our research go on smoothly, we developed our research according to the following stages. Study of flax's performance -Softening of flax yarns-Designs of fabrics' structure -Scouring and bleaching - Cellulase treatment - Dyeing and finishing.According to the study of flax's configuration and component, we know flax is coarse,hard and low streach, so it is difficult to weave, particularly on knitting machines. The pretreament of flax yarns is essential before weaving so as to improve flax's weavability and it is also a foundation of top-grade flax knitted fabrics.According to selected raw materials and the use of the products,combining the equipment situation at the same time, then we decided to produce fabrics on towpkins and four-cam track single knitting machines and designed three kinds of fabrics: double-yam jersey, weft plain-knitted fabric and open work fabrics. Through weaving repeatedly, we confirmed the rational weaving parameters. In weaving, yarns tension was strictly controlled to make loop length even and consistent in order that high quality flax blanks were sucessfully woven.In order to remove the impurity accreted to the flax fiber such as pectin, lignin and so on, the flax fabrics were in need of scouring and bleaching first. We adopted the single-stage scouring-bleaching technology. This technology was heapful to raise production efficiency and reduce environmental pollution.The cellulase treatment of the fabrics was the key of the article, the aim of whichwas to eliminate fabrics surface's fluff and decrease fabrics' scratchiness. Cellulase has been widely used in the softening of cellusive fibers. We analysesed the performance and action function mechanism of cellulase first. In order to grasp the influence of process conditions on cellulase treatment effect, then we took orthogonal test chooosing four factors: the dosage of cellulase, treatment temperature, temperature-holding time and pH value and fetching four levels for each factor in the test. We calculated the weight loss and the strength decrement of the fabrics for each test. Then we analysed the influence of each factor on weight loss and strenth decrement and the relation between weight loss and strength decrement. At last we drew the conclusion that temperature and pH value had remarkable influence on weight loss and strenth decrement and that strength decrement was well linear with weight loss. On the basis of that , we decided scientific and rational process conditions of cellulase treatment.The dyeing of blank fabrics was another important program. Flax and cotton fiber are both cellusive fiber, but flax fiber is high crystalline and impurity content, so it is difficult to dye than cotton fiber. In order to attain fine dyeing effect, we choosed the modal B reactive dye and adopted one-bath and two-step dyeing technology, that is, exhausting in the neutral bath and fixing in the alkaline bath. During dyeing salt and alkali were added according to two steps so as to high exhaustion and fixation also better level dyeing were achieved.Finishing is essential to improving the fabrics' neatness and elasticity and red...