TEL：13812131966 Chinese | English
3 / 3
图片三 |
Your location： Home > News > News trends
What are the requirements for material selection in the printing and dyeing process |
| Publisher：Jiangyin Haishibo Technology Co., LTD Release time：2025-02-13 13:33:26 Clicks：71 Close |
| The raw materials of dyeing products, mainly refers to grey cloth and dyeing materials, regardless of the batch size, the quality of raw materials before and after is an important condition to ensure that the LOT color is overcome. Even if the quality of raw materials is objectively different, it must be done in mind, processed differently, and the LOT color is strictly controlled within the minimum range. Specific practices are as follows: 1, the same color number of grey cloth, the procurement department is required to buy the same cotton weaving factory, the same batch of origin with cotton grey cloth. 2, such as middlemen for billets, must distinguish between the products of different cotton mills, if there are two factories of grey cloth, production needs to be put into production according to the batch number. If necessary, the materials used in the pre-treatment and dyeing process should be properly adjusted to overcome the in-batch color difference of the batch product. 3, for some special products, such as flax, linseed cotton and other semi-bleaching, although pre-treated, but sensitive color is still difficult to control its LOT color changes. The control method can first sample l meters in each roll, make a record of the number of each roll and the sample, and test dye the more sensitive color. Then according to the result of the LOT color of the sample, each reel will be put into production in batches. Batch adjustment during dyeing can reduce the generation of LOT color. 
5, dye materials to adhere to the batch needs to be sufficient, a color regardless of size, the first requirement is the same origin, the same batch, the same color light, concentration of the dye. It is best to use a full test of the dye, find that there are differences, to use separately, re-sample, to avoid the color of the dye due to different light, strength of a LOT of color. 6, do not ignore the effect of finishing agents such as softeners on color light, depth and edge color. A batch of large colors, in the soft finishing process, it is best to use the same batch of products on the same machine production. At the same time, it is also necessary to cut the sample color tracking control, otherwise the LOT color and edge color in the lot are difficult to control. 7. Whether the dye selection is correct is another key to controlling LOT color and edge color. Many enterprises receive samples from customers to the laboratory proofing, dye compatibility by proofing personnel to decide. The problem is that some proofing personnel lack practical experience in production. They only align the sample with the customer, and it is difficult to master the dyeing rate, the speed of color light change, the stability of compatibility, and the change size of different color isochromatic spectrum. Often the sample is sent to the customer for confirmation, and the existence of the problem is found at the time of production, then the dye compatibility is changed, and the color light is restricted by the change of the lamp, which is very passive. Therefore, using the computer color matching, according to the usually selected dye combination, choose the ideal DE value compatibility, a six compatibility, and then send the dyeing supervisor according to the principle of good quality, strong stability (dyeing curve is roughly the same), low cost to select one group of compatibility, and then submit to the test laboratory proofing, such samples both meet customer requirements, It also ensures that the color difference can be controlled to the most stable during production. Jiangsu Heshibo printing and dyeing equipment manufacturers 8, Although there are ten thousand changes in the three primary colors, but the three primary colors are not omnipotent. Practice has proved that: can not all rely on the three primary colors matching, in the face of any color, the best way is to choose an approximate color dye main color, according to the color light and then fine-tune other dyes. At the same time, the compatibility of dyes should adhere to the principle of less and less, and the less the better. |
Jiangyin Haishibo Technology Co., LTD TEL：13812131966 TEL：15806370896（Mr. Yu） E-MAIL：396900961@qq.com WEB： www.haishibo.com ADD：1303 Xicheng Road, Qingyang Town, Jiangyin City Su ICP for 2024129536
Scan and add wechat
