Patent ID: 6395040
Filing Date: 2002-05-28
Classification: C14C,D06P

Abstract:
A method for producing leather from skins, comprising the steps of:applying a liquid chrome solution to the skins while the skins are at or below a pH level of approximately 3.5; neutralizing the skins by raising the pH level of the skins to at least approximately 6.0 or above; retanning the skins by applying a tanning agent while the skins are within the pH level range of at least approximately 6.0 or above; lowering the pH level of the skins to within a range of approximately 3.0 to 3.5; applying a waterproofing agent to the skins; fixing the waterproofing agent within the skins by lowering the pH level of the skins to at or below approximately 3.0; applying a flame resistant agent to the skins; and fixing the flame resistant agent within the skins by raising the pH level of the skins to within a range of approximately 3.2 to 3.5.