Method for improving blackness of plate surface of sheared sheep garment product

The invention relates to the technical field of leather processing, and discloses a method for improving the blackness of the plate surface of a sheared sheep garment product, which comprises the steps of tanning, wool opening, retanning, wool dyeing, plate dyeing and the like. In the tanning process, leather is put into a rotary drum, water and alkaline earth metal oxide are added for rotation, a first chemical material is added for rotation, formic acid is added for rotation, a chrome tanning agent and an aluminum tanning agent are added for rotation, sodium formate is added for rotation, baking soda is added for rotation, and then drainage is conducted. According to the method, the blackness of the plate surface of the sheared sheepskin garment product can be ensured, and compared with a traditional production method, the used dye is less, so that the treatment difficulty of the generated wastewater is further reduced while the cost is reduced; the product produced by the method disclosed by the invention