Tanning Dye. The initial colour of a leather is dependent on the tanning agents used. Tannins of plants give the leather a brownish tone, fat and oil tanning. Leather dyeing is a step that all leather crafters will face, sooner or late. There are different techniques for dyeing genuine leather which were born as artisanal techniques to be.
The choice of acid or basic dyes is dictated by the color standards desired or by tanning procedures and subsequent finishing steps. In the spray methods the dyes are applied to the. Tanning is the process of treating skins and hides of animals to produce leather. a tannery is the place where the skins are processed. Tanning hide into leather involves a process which. They create ionic bonds with fibre, hydrogen bond and vander waals force of attraction also contributes. Formic acid and sodium bisulfate are used in the lime residue removal process that is still present in the skin during the feather removal process. The dye comes from leaves that are dried and ground into a powder. Henna bonds well with protein, hence it is. Results are somewhat subtle, and most users have to apply it every day for best results.