The invention discloses a chrome-tanned, water-dyed and polished leather manufacturing method, which comprises the following steps of: 1, in an alkali
coating step, liming the head, neck and back by using high-concentration
sodium sulphide
lime unhairing paste and liming the belly with low-concentration
sodium sulphide
lime unhairing paste; 2, performing
softening with a high liquor ratio in a
softening step; 3, after a
pickling step is finished, pouring 1 / 3 of waste liquor out, supplementing 1 / 3 of normal-temperature water, performing chrome-tanning on naked leather in a slightly-swelling state, and performing uniform
cutting after the chrome-tanning; 4, performing pre-
dyeing in re-tanning; 5, performing re-
dyeing with a low liquor ratio in a filling step; 6, performing oiling re-
dyeing in an oiling step; and 7, finishing and flattening the leather and
polishing the leather on a
polishing machine after the oiling re-dyeing. The method of the invention has the advantages of endowing the leather product with softness, compact grain side, fullness, high elasticity, clear pores, high air permeability,
folding endurance, tensile resistance, natural gloss and tight side ribs, along with fewer steps, cost reduction and no influence on surrounding
atmosphere, and is widely applied to the production of soft upper leather and glove leather by using cow leather, pigskin and sheepskin, particularly goat
skin.