在实际生产中，染色大小样完全无差异是不可能的，应采取有效方法予以纠正。现将常用解决方法简述如下：
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1. Cleaning method</p
1.Cold water cleaning</p
In cotton and its blended interwoven fabrics, if the cotton component appears floating or dull after being dyed with direct dyes or reactive dyes, it is generally necessary to continue washing with water, or add 0.5-1L anti-staining cleaning agent LEFIMIN (Lefimin) in the water bath. Femin) washed �若水质硬度偏高，可加入0.5～2g/L的螯合分散剂加以改善� �忌用混浊的江河水或硬度较高的深井水� �</p
2. Wash with warm water</p
涤纶混纺交织物染色时，所用染料和助剂品种多，可采取40℃水洗，以利于沾染到织物上的残留物溶落。纤维素纤维采用直接混纺染料染色，若大样整体得色比小样深一些，经温水洗一遍后得色即可相近，在一定程度还能提高色牢度。
3. Hot water cleaning</p
热水清洗大多用于酸性、直接和碱性染料染色的丝绸或合纤及其交织物� �若得色偏深，需去除染物1～2成的染料，可采取70～80℃热水洗� For silk fabrics, 0.3 to 0.5L of leveling agent can be added to the hot water bath; for polyester, nylon and other synthetic fiber blended fabrics, 0.5 to 1.0L of patching agent or patching agent can be added. dye carrier �由于热洗浴中添加的助剂量少，织物只需用流动水洗至室温即可� �如染色织物采用阳离子固色剂和柔软剂等处理，好在热洗浴中追加2～4L分散剂DAM� �热水洗(修复)原则上在原染色设备上进行，如尼丝纺、醋酯纤维及其交织绸类卷染后，若改用溢流机(绳状)热水洗，会使织物产生永久折皱� �</p
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2. Additive Additive Method</p
1. Add electrolytes</p
(1)用直接染料染纤维素纤维，染色大样深度往往不够� �若染浴中尚有染料，可追加1．5—5� �Og／L电解质(NaCl、Na2SO4)促染� This is suitable for salt effect direct dyes, such as direct lightfast yellow 3RLL, orange (L, bright red BNL, red 4BL, ruby RNLL, purple BL, blue BL, B2RL, sky blue G, emerald blue GL, green 5GLL, green GL, gray 4GL, gray GB, etc. are very effective. For temperature-effect direct dyes, a certain temperature must be maintained. </p
(2)用酸性染料染蛋白质纤维，或用碱性染料或阳离子染料染腈纶，染色大样出现颜色过深或色花时，可追加3～6g／L Na2SO4，予以褪色或匀染。
2. Add acetic acid </p
(1)用酸性染料染蚕丝、羊毛等蛋白质纤维，如染色大样偏浅而染液中尚有余色时，可追加O．5—2mL／L的98％醋酸促染。追加前必须关闭蒸汽阀，用1O倍冷水稀释后，在染物运转时缓慢加入，以避免造成新的色花。
(2) Use K-type and KN-type reactive dyes to dye cellulose fibers. If the sample is too dark, you can add 2-3mL/L 98% acetic acid and treat it at 90-95℃ for 3Omin to promote the dye to break the bonds and eliminate the color. , generally can be reduced by about 20% �</p
(3) When dyeing silk with basic dyes or dyeing acrylics with cationic dyes, if the sample is too dark, you can use 2~3mI/L acetic acid and treat it in a warm water bath at 4JD-60℃ for 20~30 minutes to dissolve the dye. Lighten by 20% to 30% �</p
3. Add leveling agent </p
(1)用分散染料染涤纶及其混纺交织物，大样比小样颜色深时，一般可追加高温匀染剂或修补剂。大样色浅，应追加相应的染料，但应注意追加时要关闭蒸汽阀，以避免产生色花，先加入适量的匀染剂。此外，当分散染料进行追加染色时，要升温至一定的染色温度，并保温15—20min，再降温降压及对样。
(2When dyeing cellulose fiber, silk, wool and nylon fabrics with direct, acidic, neutral and other dyes, in principle, O can be used to remove the migrating dye and achieve level dyeing. The amount of O added to wool fabrics generally cannot exceed 0.3g/L. In order to prevent the wool from felting, the wool protective agent Chromoplast WOK 2% to 3% (Dys-tar) can also be added. When dyeing nylon with neutral dyes, if the color of the large sample is too dark or there are rungs that need to be covered, using N-ER 3% to 5% (D’ystar) will have excellent results.
(3) When dyeing acrylic, alkali-modified polyester and silk with alkaline and cationic dyes, if the color of the dyed sample is slightly darker, hot water can be used to clean it; if the color of the sample is about 20% darker, the dyeing residual liquid can be basically washed When washing is complete, add 2 to 4L of surfactant 1227 to achieve fading through competitive dyeing. �</p
4. Add whitening agent </p
When dyeing bright colors such as ruby, rose red, violet blue, azure, sky blue and brilliant purple, if you feel that the large sample is not bright enough, you can generally add 0.0015% to 0.0025% (owf) fluorescent whitening agent. The lighter the color, the higher the dosage. few �棉纺织品以荧光增白剂4BK的效果较好，其荧光弱、艳度强、用量少、可调性好，且适应颜色广，不易“跳灯”� �因荧光增白剂引起的“跳灯”，可用不影响颜色鲜艳度的荧光沾污清除剂去除� �</p
5.Additional dyeing carrier </p
For polyester-cotton (viscose) and nylon-cotton (viscose), since polyester and nylon are hydrophobic fibers, their color is darker than hydrophilic fibers such as cotton and viscose. You can add 2-4mL to a 60°C clean water bath. /L dyeing carrier, and then gradually raise the temperature to 80~9O℃ to slowly desorb the dye on the hydrophobic fiber to achieve the same two-phase color. �实践证明，染色载体不仅能溶落疏水性纤维上的分散染料，对其它染料也同样具有溶落作用� �当温度升至80℃后，操作工要不断取样对样，一般保温至大小样相符� �</p
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3. Adding dye (pigment) materials </p
1. When adding disperse dye to polyester for color correction, it is best to first lower the dye bath temperature to below 80°C, then fully dilute the previously dissolved dye, add it within 5 to 8 minutes, and then continue to increase the temperature to the original dyeing temperature. , insulation dyeing for more than 15rnin to ensure uniform color before and after dyeing to reduce the impact on heat setting �</p
2.如果染物出缸后发现大小样色差，可在大样上追加染料或调整色光。When adjusting, in addition to calculating the variety and quantity of dyes required on the large sample, 15% to 20% of the original prescription dyes must also be added to the blank bath.
3.对用3～4种染料拼成的颜色，如米灰、瓦灰、香灰、银灰和象牙白等，不能用染(颜)料修复大小样间的色差�
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