Theory of Leather Manufacture -III Leather Tech (Tanning) 3rd Sem Syllabus for Diploma BTEUP 2017

Theory of Leather Manufacture -III detail BTEUP Diploma syllabus for Leather Technology (Tanning), effective from 2017 is collected from BTEUP 2017 Syllabus official website and presented for diploma students. The course details such as exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.

For all other leather tech (tanning) 3rd sem bteup diploma syllabus 2017 you can visit Leather Tech (Tanning) 3rd Sem BTEUP Diploma Syllabus 2017 Subjects. The detail syllabus for theory of leather manufacture -iii is as follows.

Rationale:

Several processing steps are envolved in obtaining finished leather for manufacturing of leather goods from wet blue leather. This envolves selection of wet blue leather, neutralisation, dying, fat liquoring, stuffing, stripping and bleaching and water proofing. The knowledge of post tanning operations like sammying, setting and drying, sawdusting, buffing, snuffing is also essential for diploma students in leather technology. Awareness about pigments and binders will provide an aided advantage to the students.

DETAILED CONTENTS:

1. Selection,Wet Back,Rechanging

Selection of Wet blue leather, Sammying, Splitting and shaving operation, Wet back rechroming.

2. NEUTRALISATION (Deacidification):

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3. DYEING:

Various types of dyes including natural dues, light, fastness, penetration, washing and colour matching of dyes and their elementary chemistry and behaviour towards leathers. Different types of dyeing auxiliary (leveling, fixing agents and mordents, etc.). Principle and methods of dyeing and uses for different end products with different recipes. Restricted/Banned Aryle Amine base dyes, Toxilogical Hazardous aspects of dyes.

4. RETANNING :

Various types of retanning agents including their properties and uses. Types of retanning.
Classification, general methods of preparation, reactions with skin protiens, use in leather manufacture. Types and use of various Resin tanning agents. Syntans used in trade, Phenol free syntans.

5. FAT LIQUORING:

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6. STUFFING:

Various types of fats, oil and waxes used their properties, recipes and uses. Application of stuffing.

7. STRIPPING AND BLEACHING:

Principle involved in stripping and bleaching of leathers, effect of bleaching and stripping chemicals in their order of perference, Methods of bleaching.

8. WATER REPELLANT AGENTS:

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9. FINISHING:

1. MACHINE OPERATIONS:
1. Sammying, setting, drying:

Object of sammying and setting. Drying process and method of drying with reference to vegetable tanned leather, chrome tanned leather and softy leathers. Vaccum drying-Elementary mechanism and application.

2. Sawdusting Or Conditioning:

Method and object of conditioning-Nailing and toggling. Object of nailing and toggling, staking.

3. Buffing And Snuffing:

Object of buffing and snuffing. Use of emery paper for different purpose.

2. FINISHES, TYPES OF FINISHES:
1. Basic products for finishing
2. Composition And Classification:

General structure and composition of different types of finishes and finishing agents. Classification of finishes. Eco-friendly finishes

3. Materials:
1. PIGMENTS:

Classification of pigments, their porperties and uses in leather finishing. Preparation of pigments and applications including colour matching (In organic and Organic colour lakes).

2. BINDERS

Type of binders (casein, shellac, mucillage and gums) properties and use.
Plasticizers, lusters, names of various materials used and method of their application. Resin binder or polymer binders-Types and classification of different binders available in the market and its proprieity effect. Waxes and PU finishes.
Filling and impregnation agents and methods.
Nitro cellulose lequer properties and use.
N.C. Lacquer emulsion, classification formulation, dilutable with water or organic solvent with reference to fastness to wet rubbing. Elementary knowledge of PVC lacquer, polyvinyl acetateco-polymer lacquer and polyurethane their applications.
Solvents and diluents.

3. Compact finishing materials.
4. Techniques:

Seasons, their formulation and mentod of applications.

1. Brushing
2. Padding
3. Roller coating
4. Spraying and Polishing
5. Glazing, Burnishing and Brushing
6. Hot Plating.
7. Measuring.
8. Packaging
9. Sources of effluents of post tanning operation.

PRACTICALS

1. Exercises involving dying and finishing operations.
2. Guide lines for identification of finished leather for export as per Indian/International Standard.

For detail syllabus of all other subjects of BE Leather Tech (Tanning), effective from 2017 do visit Leather Tech (Tanning) 3rd Sem BTEUP syllabus for 2017.

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