What Role Does Sodium Formate Play in Leather Dyeing?

Sodium formate plays the following roles in leather dyeing and printing:

1. tanning effect: sodium formate can be used as one of the acidic additives in leather tanning, help regulate the pH value of the tanning solution, promote the combination of tanning agent and collagen in the leather, make the leather fibers more compact, increase the softness and strength of leather.

2. Acid treatment: Sodium formate as an acidic substance can be used as an acid treatment agent in leather printing and dyeing process, help to remove the alkaline substance on the surface of the leather, reduce the alkaline residue of the leather, so as to improve the penetration of the dyestuff and the color fixing property.

3. Acid catalyst: In the process of dye fixing, sodium formate can be used as acid catalyst to promote the chemical combination of dyes and leather fibers, so as to enhance the color fixing and durability of dyes.

4. Inhibit the growth of bacteria: sodium formate has a certain antibacterial effect, in the process of leather printing and dyeing can play a role in preventing the growth of bacteria, to maintain the cleanliness and quality of dyes and leather.

Summarize: Sodium formate in leather printing and dyeing mainly plays the role of regulating pH value, promoting tanning and color fixation, inhibiting bacterial growth, etc., which helps to improve the quality and efficiency of leather printing and dyeing.

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