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Basic Level Courses
BASIC LEVEL TANNING COURSE CURRICULUM
Unit 1 Overview of the Leather Industry
Role of leather industry in relation to farming, abattoirs and leather goods manufacture
Tannery processing options
Factors that impact on the global leather industry
Unit 2 Structure of Different Animal Skins
Difference between hide and side
Structure of cattle hide
Structure of calfskins
Structure of goatskins
Structure of sheepskins (Merino versus hair sheep)
Structure of ostrich skins
Unit 3 Hide and Skin Defects
Defects that arise due to animal breed, age, diet
Defects that arise on the living animal
Defects that arise during slaughtering and skin removal
Defects that arise due to poor preservation of hides and skins
Defects that arise in the tannery during processing
Unit 4 Preservation
Stages in putrefaction of hides and skins
Bacterial growth conditions
Dehydration / Curing
Sun drying
Shade drying
Wet salting / Dry salting
Halophilic bacteria
Brining
Short term preservation
Antiseptics
Refrigeration
Pickling
Unit 5 Beamhouse Operations
Reasons for soaking
Possible problems that occur during soaking
Differences between soaking of hides and sheepskins
Reasons for liming / unhairing
Hair burn unhairing
Hair save unhairing
Painting / Sweating of sheepskins
Fleshing and splitting
Deliming
Phenolphthalein indicator
Bating
Enzymes
Degreasing
Surfactants
Bleaching
Unit 6 Tanyard Operations
Pickling
Masking chemicals
Baume
Acid swelling
Tanning
Tanning chemicals
Basification
Fungi
Fungicide
Horsing up / Ageing
Sammying
Sorting / Grading
Unit 7 Tanning Testing
pH
Boil test
Calamari test
Shrinkage temperature
Baume
Float temperature
Chromium concentration
Miscellaneous tests / observations
Unit 8 Post Tanning Operations
Splitting and shaving
Wetting back and neutralization
Retanning
Dyeing
Fatliquoring
Fixation
Setting out and drying
Conditioning
Staking
Milling
Buffing
Impregnation
Leather finishing
Measuring
Leather testing