Manufacturing, Engineering and Technology Manufacturing and Assembly

Leather Tanning Practices for Professionals Training

SAQA US 243683 | NQF 2 | Credits 36 | Duration 33 Days
From $5,114 per delegate

Description

This course equips leather industry professionals with advanced knowledge and practical skills to apply tanning practices effectively. Participants will learn to select appropriate tanning agents, manage processing parameters, and ensure quality outcomes in leather production. The training aligns with SAQA unit standard 243683, focusing on safe and efficient tanning operations.

Learning Outcomes

  • Apply tanning agents and chemicals according to standard operating procedures.
  • Analyze leather quality and adjust tanning parameters to meet specifications.
  • Evaluate environmental and safety hazards in tanning processes and implement controls.
  • Demonstrate proper handling and storage of tanning materials and finished leather.
  • Implement quality assurance checks during and after tanning.
  • Document tanning processes and outcomes for compliance and traceability.

Target Audience

This course is designed for leather technicians, production supervisors, and quality control personnel working in tanneries or leather processing facilities. It is also suitable for professionals seeking to formalize their skills in leather tanning practices.

Prerequisites

None — open enrollment

Course Outline

Day 1: Introduction to Leather Tanning

Objectives:
• Understand the history and significance of leather tanning
• Identify different types of hides and skins
• Describe the basic chemical principles of tanning
• Recognize safety protocols in a tannery

Topics:
• Overview of leather tanning industry
• Types of raw materials: hides and skins
• Basic chemistry: proteins, pH, and tanning agents
• Safety equipment and procedures
• Environmental considerations

Day 2: Raw Material Handling and Storage

Objectives:
• Explain proper handling of raw hides
• Describe preservation methods (salting, chilling)
• Identify defects in raw hides
• Apply storage best practices

Topics:
• Receiving and grading raw hides
• Preservation techniques: wet-salting, dry-salting
• Common defects: cuts, holes, grain damage
• Storage conditions: temperature, humidity
• Inventory management

Day 3: Beamhouse Operations – Soaking and Liming

Objectives:
• Define beamhouse processes
• Describe soaking objectives and methods
• Explain liming and its effects on hide structure
• Calculate chemical concentrations for soaking and liming

Topics:
• Beamhouse workflow overview
• Soaking: rehydration, dirt removal
• Liming: hair removal, swelling, opening up fiber structure
• Chemicals used: lime, sodium sulfide
• Process control parameters: time, temperature, pH

Day 4: Beamhouse Operations – Deliming, Bating, and Pickling

Objectives:
• Describe deliming and its purpose
• Explain bating for protein degradation
• Perform pickling to prepare hides for tanning
• Monitor pH and temperature during these processes

Topics:
• Deliming: removal of lime, pH adjustment
• Bating: enzymatic treatment for softness
• Pickling: acidification with salt and acid
• Process sequence and timing
• Quality checks: pH, cross-section test

Day 5: Tanning Basics – Vegetable Tanning

Objectives:
• Understand vegetable tanning principles
• Identify common vegetable tanning agents
• Describe the tanning process step-by-step
• Recognize characteristics of vegetable-tanned leather

Topics:
• History and chemistry of vegetable tanning
• Tanning agents: bark, leaves, fruits (e.g., quebracho, mimosa)
• Tanning process: pit tanning, drum tanning
• Factors affecting tanning: concentration, temperature
• Properties: firmness, color, aging

Day 6: Chrome Tanning

Objectives:
• Explain chrome tanning chemistry
• Describe the chrome tanning process
• Understand chrome uptake and fixation
• Compare chrome vs. vegetable tanning

Topics:
• Chromium salts: basic chromium sulfate
• Chrome tanning process: pickling, tanning, basification
• Chrome uptake: influence of temperature, time
• Fixation and washing
• Advantages: speed, softness, hydrothermal stability

Day 7: Other Tanning Methods

Objectives:
• Identify alternative tanning methods
• Describe combination tanning
• Understand synthetic and aldehyde tanning
• Evaluate environmental impacts of different methods

Topics:
• Synthetic tanning (syntans)
• Aldehyde tanning (glutaraldehyde, oxazolidine)
• Combination tanning: chrome-vegetable, chrome-synthetic
• Oil tanning (chamois leather)
• Environmental and health considerations

Day 8: Post-Tanning Operations – Sammying, Splitting, and Shaving

Objectives:
• Explain sammying to remove excess moisture
• Describe splitting for thickness uniformity
• Perform shaving to achieve desired thickness
• Maintain equipment and ensure safety

Topics:
• Sammying: mechanical dewatering
• Splitting: cutting into layers (grain, split)
• Shaving: thickness adjustment
• Equipment: sammying machine, splitter, shaver
• Quality control: thickness measurement

Day 9: Retanning, Dyeing, and Fatliquoring

Objectives:
• Understand retanning to modify leather properties
• Describe dyeing techniques for color
• Explain fatliquoring for softness and water resistance
• Formulate retanning recipes

Topics:
• Retanning: purpose and agents (syntans, vegetable)
• Dyeing: aniline, semi-aniline, pigment finishes
• Fatliquoring: oils, emulsifiers, application
• Process sequence and drum operation
• Effect on leather properties: fullness, grain tightness

Day 10: Finishing Operations – Surface Preparation

Objectives:
• Describe finishing objectives
• Perform surface preparation: buffing, sanding
• Apply base coats and primers
• Identify defects and corrective measures

Topics:
• Finishing overview: protection, aesthetics
• Buffing: grain correction, nap creation
• Sanding: smoothing, adhesion promotion
• Base coats: binders, pigments
• Defect repair: filling, spraying

Day 11: Finishing – Coating and Effects

Objectives:
• Explain coating types: lacquer, polyurethane
• Apply top coats for durability
• Create special effects: embossing, plating
• Understand drying and curing

Topics:
• Coating materials: solvent-based, water-based
• Application methods: spray, roller, curtain coating
• Top coats: gloss, matte, protection
• Embossing: patterns, grain simulation
• Plating: flattening, ironing

Day 12: Quality Control and Testing

Objectives:
• Describe physical and chemical testing methods
• Perform tests for tensile strength, tear strength
• Analyze color fastness and water resistance
• Interpret test results and adjust processes

Topics:
• Physical tests: tensile, tear, stitch tear
• Chemical tests: pH, chromium content, fat content
• Color fastness: to light, rubbing, water
• Water resistance: Maeser, Bally penetrometer
• Statistical process control

Day 13: Environmental Management in Tanning

Objectives:
• Identify environmental impacts of tanning
• Describe wastewater treatment methods
• Understand solid waste management
• Comply with environmental regulations

Topics:
• Pollution sources: wastewater, solid waste, air emissions
• Wastewater treatment: primary, secondary, tertiary
• Solid waste: sludge, hair, trimmings – reuse/recycle
• Air emissions: control of H2S, ammonia
• Regulatory framework: NEMA, water use licences

Day 14: Health and Safety in the Tannery

Objectives:
• Recognize occupational hazards in tanning
• Implement safety measures for chemical handling
• Use personal protective equipment (PPE)
• Respond to emergencies (spills, fires)

Topics:
• Chemical hazards: acids, alkalis, chromium
• Physical hazards: machinery, wet floors
• PPE: gloves, goggles, aprons, boots
• Safety data sheets (SDS)
• Emergency procedures: spill containment, first aid

Day 15: Process Optimization and Troubleshooting

Objectives:
• Analyze common process problems
• Optimize tanning recipes for quality
• Troubleshoot defects: looseness, cracking
• Implement corrective actions

Topics:
• Common defects: grain cracking, looseness, spots
• Root cause analysis: process parameters, raw materials
• Recipe optimization: chemical dosage, time, temperature
• Process control charts
• Case studies of troubleshooting

Day 16: Automation and Technology in Tanning

Objectives:
• Understand automation in modern tanneries
• Describe process control systems
• Evaluate benefits of technology adoption
• Identify trends: Industry 4.0, IoT

Topics:
• Drum automation: PLC control, recipe management
• Process monitoring: pH, temperature, time
• Data logging and analysis
• Robotics in finishing
• Future trends: digital twins, AI

Day 17: Leather Grading and Classification

Objectives:
• Describe grading systems for finished leather
• Classify leather by quality, size, and finish
• Understand market requirements
• Apply grading standards

Topics:
• Grading criteria: grain quality, defects, thickness
• Classification: full grain, corrected grain, split
• Market segments: footwear, upholstery, automotive
• Standard grading systems (e.g., Tanners' Council)
• Documentation and traceability

Day 18: Supply Chain and Logistics

Objectives:
• Explain leather supply chain from farm to product
• Manage inventory and storage of finished leather
• Understand logistics for export
• Apply quality assurance during transport

Topics:
• Supply chain stages: hide sourcing, tanning, finishing
• Inventory management: FIFO, storage conditions
• Packaging: wrapping, palletizing
• Transportation: containers, climate control
• Export documentation: certificates of origin

Day 19: Business and Sustainability in Tanning

Objectives:
• Evaluate business models in tanning industry
• Understand sustainability certifications (LWG)
• Implement cost-saving measures
• Develop a sustainability plan

Topics:
• Business models: contract tanning, branded products
• Sustainability: water, energy, chemical reduction
• Certifications: Leather Working Group (LWG), ZDHC
• Cost analysis: raw materials, chemicals, labor
• Corporate social responsibility

Day 20: Course Review and Assessment

Objectives:
• Review all key concepts from the course
• Complete a comprehensive assessment
• Present a process improvement project
• Receive feedback and certification

Topics:
• Summary of beamhouse, tanning, finishing
• Review of quality control and troubleshooting
• Assessment: written exam and practical demonstration
• Process improvement project presentations
• Course evaluation and certification

Practicals

64 hours of practicals To be conducted online or on-campus or in-house
Overview

The practical component allows learners to apply theoretical knowledge in a real tannery setting. Learners will perform key beamhouse, tanning, and finishing operations under supervision, developing hands-on skills in chemical handling, process control, and quality assessment.

Practical Activities
  • Beamhouse Operations Practical — Learners will perform soaking, liming, deliming, bating, and pickling on a batch of hides, monitoring pH and temperature at each stage. (16h)
  • Tanning Practical – Chrome and Vegetable — Learners will carry out chrome tanning and vegetable tanning on prepared hides, controlling tanning agent addition and basification. (16h)
  • Post-Tanning and Finishing Practical — Learners will sammy, split, shave, retan, dye, fatliquor, and apply finishing coats to leather, producing a finished product. (16h)
  • Quality Control and Troubleshooting Practical — Learners will conduct physical and chemical tests on leather samples, diagnose defects, and propose corrective actions. (16h)

Summatives

Each delegate is assessed continuously throughout the course via daily exercises, scored practical assignments, and a final summative test at the end.

Practical Assignments — 30%

Practical assignments are observed and scored against a rubric during the practical sessions. Each delegate's practical mark is averaged into a single 100% score and contributes 30% to the final total.

Daily Exercises — 20%

Every training day ends with a multiple-choice exercise scored out of 100%. The scores from each daily exercise are averaged across the duration of the course to produce a Daily Average mark, which contributes 20% to the final total.

Final Test — 50%

On the last day a final summative test is written. It is a multiple-choice paper with multiple-answer questions: each question may have more than one correct option, and a single wrong selection on a question marks the entire question wrong — no partial credit. The final test is scored out of 100% and contributes 50% to the overall mark.

Final Total
Component Out of Weight
Practical Assignments (rubric-scored) 100% 30%
Daily Average (multiple choice) 100% 20%
Final Test (multi-answer multiple choice) 100% 50%
Final Total 100%

All marks are recorded on the AATICD LMS and visible to each learner under their account.

Certificate

Certificate of Completion

Awarded to delegates who achieve an overall mark of 50% or higher on the Final Total (Practicals 30% + Daily Average 20% + Final Test 50%).

How it works
  • Certificates are auto-generated on the AATICD LMS as soon as the marks pass the 50% threshold.
  • Each certificate is a branded PDF with the delegate's name, the course title, the unit standard ID, NQF level, credits, and the date of issue.
  • You can download or print your certificate from your LMS dashboard at any time after issue — there's no reissue fee and no expiry date.
  • If you scored under 50% you can sit the final test again at the next scheduled session at no extra cost.
Where to find it

Sign in to the LMS, open your dashboard, and your certificates appear under My Certificates. Each entry has a View / Download button and a print option.

Training Discounts

Group discounts apply automatically — the more delegates you enrol, the greater the saving. Discounts are calculated at 3% per 5 delegates, scaling up to 40% off for 100+ delegates.

Delegates Discount
5 3% off
10 6% off
15 9% off
20 12% off
25 15% off
30 18% off
50 30% off
75 35% off
100 40% off

3% discount per 5 delegates, up to 40% off for 100+ delegates. Contact us for a custom group quote.

Upcoming Training Sessions
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Training Discounts
Delegates Discount
5 3% off
10 6% off
15 9% off
20 12% off
25 15% off
30 18% off
50 30% off
75 35% off
100 40% off

3% off per 5 delegates, up to 40% for 100+

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