Intermediate Level Tanning Course
INTERMEDIATE LEVEL TANNING COURSE
LEARNING OBJECTIVES
Lecture 1 Overview of the Leather Industry
The relationship between the meat industry and the tanning industry
The different processing options available to tanneries
The factors that impact on the global tanning industry
Lecture 2 Structure of Different Animal Skins
The difference between a hide and a skin
The important parts of the skin structure
The difference in skin structure between cattle hides, calfskins, sheepskins, goatskins, pigskins and some exotic skins
How skin structure can influence the properties of the leather produced from these different skin types
Lecture 3 Hide and Skin Defects
Defects on leather
How defects arise on leather at the different stages of the life cycle of a hide or skin
The damage defects do to hides and skins
How defects can possibly be prevented at the different stages of the life cycle of a hide or skin
How some defects can be caused during tannery processes
Lecture 4 Preservation
The reasons for preservation
The different types of preservation methods
The damage that bacteria can cause on hides and skins
The conditions which promote the growth of bacteria
Lecture 5 Beamhouse Operations - Soaking
What the beamhouse is in a tannery
The order and processes involved in the beamhouse
The reasons for the soaking process and the changes that occur to the raw material during the soaking process
The types of chemicals used during the soaking process
Process problems that can occur during the soaking process
How to solve process problems during the soaking process
Lecture 5 - Beamhouse Operations - Liming and Fleshing
Why the liming process is carried out in the beamhouse
The chemicals used in the liming process
The difference between the hair burn and the hair save process
The difference between the paint unhairing and the sweating process for removing wool from sheepskins
Process problems that can occur during the liming process
How to solve process problems during the liming process
Why the fleshing process is carried out
Why lime splitting is carried out
Lecture 6 Tanyard Operations
What the tanyard is in a tannery
The order and processes involved in the tanyard
The reasons for each tanyard process and the changes that occur to the raw material
Some of the defects which occur due to poor processing
Process problems that can occur during the pickling, tanning and basification processes
How to solve process problems during the pickling, tanning and basification processes
Lecture 7 Tanning Testing
The different tests that are carried out in the beamhouse and tanyard
The reason why these tests are carried out
Typical results that could be obtained for these tests
What the likely causes are for a test that does not meet specifications
Lecture 8 Post-Tanning Operations
Why leathers are retanned, dyed and fatliquored
The drying and softening of leather
The different pre-finishing operations
The reasons why leather is finished
The way in which leather is finished