Pre-Tanning And Tanning Processes

Leather Technology · Level 6  ·  5 Chapters

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What Pre-Tanning And Tanning Processes covers

In this unit, you will be able to skillfully prepare hides and skins by accurately sorting, assessing, and processing them through each crucial stage of pre-tanning and tanning. You will confidently handle chemicals, operate equipment safely, and apply precise techniques to transform raw pelts into quality materials ready for further production. By mastering these steps, you’ll play a vital role in creating durable, high-quality leather products that meet industry standards.

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Careers after Pre-Tanning And Tanning Processes

Understanding and mastering pre-tanning and tanning processes opens the door to a vibrant and essential industry in Kenya, deeply rooted in our culture and economy. From the bustling jua kali workshops in Nairobi to large-scale operations in Eldoret and Kisumu, skilled professionals in this field are the backbone of leather production, supplying materials for footwear, upholstery, and fashion.

  • In Kenya’s leather industry hubs such as Tannery in Athi River and Narok, your skills in sorting, soaking, and liming hides and skins are crucial for producing high-quality leather used in manufacturing shoes, bags, and belts.
  • Employment opportunities abound in established companies like KenLeather and Rivatex East Africa, as well as in county government projects that support local artisans and leather cooperatives.
  • Mastery of these processes allows you to earn a reliable income through formal employment or by starting your own small-scale leather processing business, supplying raw or semi-processed leather to local craftsmen and exporters.
  • Your expertise contributes directly to Kenya’s export economy, where leather and leather products are among the top earners, creating jobs and supporting families.
  • By excelling in these skills, you become a vital link in the value chain, ensuring that Kenya’s hides and skins meet international standards, enhancing the reputation of Kenyan leather goods worldwide.

Embrace this skill set with confidence—your hands have the power to transform raw hides into valuable products that tell the story of Kenyan craftsmanship and innovation. Your future in the leather industry is bright and full of opportunity!

Chapters

What Pre-Tanning And Tanning Processes covers: 55 main topics in 5 chapters

1. Sort and select hides and skins

  1. 1.1 Structure of the skin o
  2. 1.2 Definition of terms
  3. 1.3 Origin of hides/skins
  4. 1.4 Methods of preservation of hides/skins
  5. 1.5 Types of defects
  6. 1.6 Grading/selection of hides/skins

2. Soak hides/skins

  1. 2.1 Definition of terms o
  2. 2.2 Soaking
  3. 2.3 Soaking aids o o
  4. 2.5 Soaking chemicals
  5. 2.6 Determination of soaking chemical quantities
  6. 2.7 Purpose of soaking
  7. 2.8 Factors that influence soaking
  8. 2.9 Soaking defects
  9. 2.10 Soaking recipe

3. Lime/un-hair and de-lime pelts

  1. 3.1 Definition of terms
  2. 3.2 Liming chemicals
  3. 3.3 Importance of liming
  4. 3.4 Factors affecting liming
  5. 3.5 Liming faults
  6. 3.6 Liming methods
  7. 3.7 Un-hairing methods
  8. 3.8 Aims of de-liming
  9. 3.9 De-liming methods
  10. 3.10 Defects and remedies of de-liming
  11. 3.11 Liming and de-liming recipe

4. Bate, de-grease and pickle pelts

  1. 4.1 Definition of terms o
  2. 4.2 Fleshing methods
  3. 4.3 Importance of fleshing
  4. 4.4 Faults during fleshing
  5. 4.5 Protective measures during fleshing
  6. 4.6 Importance of bating
  7. 4.7 Bating chemicals
  8. 4.8 Defects and remedies of bating
  9. 4.9 Types of bates
  10. 4.10 Factors affecting bating
  11. 4.11 Aims of de-greasing
  12. 4.12 De-greasing methods
  13. 4.13 Pickling chemicals
  14. 4.14 Importance of pickling
  15. 4.15 Defects and remedies of pickling
  16. 4.16 Methods of pickling
  17. 4.17 Factors affecting pickling
  18. 4.18 Process control of pickling
  19. 4.19 Pickling recipe
  20. 4.20 Importance of de-pickling 5 Tan pelts o

5. Tan pelts S/No Learning Outcomes

  1. 5.1 Definition of terms
  2. 5.2 Types of tanning materials
  3. 5.3 Factors affecting tanning
  4. 5.4 Importance of basification
  5. 5.5 Basifying agents
  6. 5.6 Leather testing
  7. 5.7 Tanning recipe
  8. 5.8 Tanning faults
  9. 5.9 Clean technology General Resources Equipment Materials and Supplies 25 Gas masks 5 Drums Assorted Hides/skins 25 Helmets 10 Paddles 13 Pelts 25 Goggles Fleshing machine Assorted tanning Chemicals 25 Gloves 25 Fleshing knives Assorted Indicators 25 Safety boots 5 Weighing balances Assorted Indicators 25 Overalls 10 Paddles 25 Aprons 10 sharpening files 10 First Aid Kit 2 Splitting machineries 25 Gas masks 10 hydrometer Baume 25 Gumboots 10 Shrinkage temperature apparatus Source of water 2 Boiler

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Beyond the syllabus

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