stuffing - the treatment of leather with oils using a melt system rather than an emulsification system ... the balance of oils, waxes and greases impart the desired characteristics to the leather
In the fatliquoring process, which is the most common method of lubrication, the leathers are treated with emulsions of lubricating oil in a water system. Under the conditions of the fatliquor the emulsion is deposited in the leather with the absorption of the oil on the fibers of the skin.