Leather Dyes Specialized Manufacturer
Ltd. is an acid dyes, direct dyes, leather dyes, feed additives and other chemical raw materials manufacturers, products are mainly used in leather, wool, tweed, silk, paper, wood, metal and other industry sectors.
Methods for Dyeing Leather with Dyes
Leather dyeDyeing methods can be classified into drum dyeing, vat dyeing, brush dyeing, spray dyeing, roller printing, etc., based on the tools and equipment used. In practice, drum dyeing is very common. Other methods such as single-sided dyeing are also common, used to supplement tones or enhance dyeing effects.
Drum dyeing is the main dyeing method for chrome-tanned raw materials, which is convenient to operate, provides uniform dyeing, and has good dye fastness. Depending on the differences in coloring state and hue requirements,Leather dyethere are various drum dyeing operations:
1,Single dyeing method: This method allows for good preparation of dyes before dyeing.Leather dyeDyes are dissolved in high-temperature water, stirred well, and the bath temperature and water volume in the drum are adjusted. The dye solution is added through the shaft hole, and after sufficient time, the subsequent processes or fixation can continue. This method has good uniformity.
2,Multiple dyeing method: The well-mixed dye is added in parts, fixed after dyeing. After that, some operational processes such as re-tanning, drying, and reheating can be inserted. The remaining dye is added to the dyeing process. This method is sometimes referred to as pre-dyeing and re-dyeing, or as penetrating dyeing and surface dyeing, which can make the leather tones rich and vibrant.Leather dye, Asynchronous dyeing method: Currently, many tanneries adopt this method, which can save dye costs and adjust surface color brightness. This method can be used when there are differences in permeability or when the internal and external tones of the leather do not need to be completely consistent.
3, Layered dyeing: This method makes the leather tones more vibrant. However, it is not easy to achieve uniform dyeing, and the operation is also inconvenient. It is usually dyed with anionic dyes, fixed, and then colored with cationic dyes. This method is often used on organic tanned leather or heavily re-tanned leather, even a small amountLeather dyecan achieve rich tones.
4、套染色：皮革色调更浓艳。但不易匀染，操作也不方便。通常用负离子染料染色，固定，然后用阳离子染料着色。有机鞣革或重植复鞣、重合成鞣剂复鞣的革坯上使用此方法较多，即使少量Leather dye也能获得丰富的色调。
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Dezhou Jinmao Chemical Co., Ltd.
Address: 1922 Yingbin Street, Lingcheng District, Dezhou City, Shandong Province, China
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