Bamboo fiber and wool blends break through the limitations of wool fabrics
Bamboo fiber and wool blends break through the limitations of wool fabrics
Because the internal structure of bamboo fiber is a multi-ring network structure, which is different from the single-ring structure of cotton and wood fibers, its cross-section is covered with oval-shaped voids, forming a high degree of hollowness, creating an ideal environment for absorbing and evaporating water. Better conditions. At the same time, bamboo fiber has unique antibacterial properties. Bamboo fiber and wool blends can produce high-count, light and dry fabrics. The products have the characteristics of high yarn count, smooth feel, drape and elegance, and are comfortable and cool. They are especially suitable for summer wear and break through the limitations of wool fabrics.
When dyeing moso bamboo blended fabrics, special attention needs to be paid to the dyeing of bamboo fibers. Bamboo fiber is cellulose fiber and can be dyed with direct dyes or reactive dyes under neutral or alkaline conditions, while wool is preferably dyed under acidic conditions. Bamboo fiber and wool blended products can theoretically achieve two-bath piece dyeing. , but the color difference is difficult to control, the operation requirements are high, and the temperature control requirements are strict, so it is not suitable for mass production. Under normal circumstances, strip dyeing can be used, where bamboo fiber and wool are dyed separately and then mixed and combed. Wool spinning companies generally have no major problems with wool dyeing, but they must pay attention to the following points when dyeing bamboo fiber: First, choose dyes with good dyeing and leveling properties, and the dyeing temperature should not be too high. Second, if there are dyeing flowers and uneven dyeing, an appropriate amount of leveling penetrant can be added to form a good dissolving and dispersing effect on the dye, ensuring uniform coloring and reducing color flowers. Third, the operation, especially the heating and holding time, should be strictly controlled. Fourth, reduce floating color and ensure color fastness. Through screening tests, Cibacron FN type cotton was finally selected for dyeing with reactive dyes. This dye is a dual-reactive group dye of monofluoro-s-triazine and modified vinyl sulfone. The chemical bond formed with the fiber is very stable under acid and alkali conditions, and the fastness after dyeing is high. At the same time, in order to maintain the natural characteristics of bamboo fiber and ensure that there is no residual free formaldehyde on the fabric, a formaldehyde-free color fixing agent is used as the color fixing agent.
The finishing issues of moso bamboo blended fabrics also require special attention. First of all, a common problem after finishing is that the fabric is dry but not smooth enough, and the cloth surface is not flexible. To solve this problem, you can use a softener with obvious softening effect for soft finishing (in order to maintain the soft and hygroscopic characteristics of bamboo fiber products, choose pro- For water-based softeners, perform two softening treatments, that is, pad the softener after color fixation, then dehydrate, dry, and open; then pad the softener before setting to maintain hygroscopicity and improve hand feel), and When drying, increase the moisture supply and extend the interval time. Secondly, the rigidity of bamboo fiber is relatively high, and the products blended with wool are prone to creases during wet finishing and are difficult to eliminate. When washing the fabrics, light washing should be used to shorten the washing time or use open-width washing. The open-width washing time It can be carried out according to the conventional product process. Third, when piecing together the seams before singeing, you cannot use an ordinary sewing machine. Instead, you should use a patchwork machine to ensure that the joints are smooth, straight, and firm, which will help reduce singeing marks. If it is a sample product with a length of 10 to 20 meters, it is necessary to sew a sufficiently long leader cloth, and the thickness of the leader cloth and the thickness of the gray cloth cannot be too different. fourth. On the basis of singeing, the brushing and shearing are strengthened to ensure that the wool surface is clean, smooth and the texture is clear. Finally, the can steaming is carried out on the KD95 can steamer. The internal pressure is increased appropriately and the cooling time is extended. After the can steaming, a light steaming is added to make the fabric surface smooth and shiny, and at the same time it has a light pre-shrinking effect to ensure the dimensional stability of the cloth surface. .
At present, giving full play to the excellent properties of bamboo fiber in wool fabrics can enrich the varieties of wool fabrics, improve the grade and added value of fabrics, and will surely achieve good market effects. 4E5lC4nHl
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