TNPSC Leather Technology Exam Syllabus : Tamil Nadu Public Service Commission

Organisation : Tamil Nadu Public Service Commission (TNPSC)
Exam Name : TNPSC Leather Technology Examination
Standard : UG Degree Standard
Subject Code : 365
Announcement : TNPSC Leather Technology Exam Syllabus
Website : https://www.tnpsc.gov.in/English/new_syllabus.html

TNPSC Leather Technology Exam Syllabus

TNPSC Leather Technology Exam Syllabus are given below,

Related / Similar Syllabus : TNPSC Electronics & Communication Engineering Exam Syllabus

UNIT – I: Basic Science for Leather Technologists
Electromagnetic waves – Natural and synthetic polymers – Viscoelasticity – d-block elements – Coordination compounds – Coordination theory – Bonding – Types of reactions – Properties of colloids – Donnan membrane equilibrium – Emulsions and surfactants – Wetting theory – Cohesion and Adhesion

UNIT – II: Skin Structure & Preservation of Hides & Skins
Hides and Skins – Types – Functions and properties – Histological characteristics – Structure – Chemical constituents – Various fibrous and non-fibrous proteins – Biochemistry of collagen and other substances – Defects – Grading – Standard flaying techniques – Curing and preservation methods – Animal by products

UNIT – III: Pre-Tanning in Leather Processing
Soaking, unhairing, liming, deliming, bating, pickling, depickling and degreasing – Their objectives and principles involved – Chemicals and auxiliaries used in pre-tanning processes – Mechanical operations in pretanning – General pretanning processes for manufacture of different types of heavy and light leathers – Process control in pretanning

UNIT – IV: Tanning Processes in Leather Processing
Tanning materials – Vegetable, mineral and organic – Their classification – Chemistry and Technology of tanning materials and methods – Characterization – Manufacture and analysis of various tanning materials. Theory and mechanism of vegetable, chrome, Aluminium, Zirconium, Aldehyde, Oil and other organic tanning.

UNIT – V: Post tanning processes in leather processing
Rechroming, neutralization, retanning, dyeing, fatliquoring and fixing –
Their objectives and principles – Chemicals used for the above unit
processes – Syntans, fatliquors, dyes, dye-auxiliaries – Machinery
operations in post tanning

UNIT – VI: Finishing Operations In Leather Processing
Surface coating and principles in leather finishing – Types of finishing – Pigments, binders, wax emulsion, fillers, topcoats, lacquers and lacquer emulsions, feel modifiers, their nature and properties – Upgradation methods – Machinery operations in finishing – Novel finishing techniques

UNIT – VII: Leather Products Manufacture
Characteristics of various types of leathers – upper, sole, garment, leather goods, sports and specially leathers – Leather supplement and synthetics – Design and manufacture of footwear, leather goods & garments. Machinery in leather products manufacture – Mechanics and operation – IT applications for leather product design.

UNIT – VIII: Leather Economics & Industrial Management
Hides and skins – Major markets and sources of supply from India and world – Structure and Distribution of Leather and allied Product industries in India and World – Leather Economics and Industrial Management – Cost volume profit relationship – break even analysis – Project feasibility reports – organization & management of leather sector – marketing and export of leather and products – Professional Ethics and human values.

UNIT – IX: Cleaner Options in Leather Processing
Eco-friendly pretanning operations – Less chrome and chrome-free tanning systems – Formaldehyde, Phenol, AOX free post tanning systems – Aqueous finishing concepts and formulation; Other novel finishing techniques to reduce VOC- Latest concepts and trends in leather processing – Tannery Effluent treatment – Zero Liquid Discharge concepts – Effluent treatment plant – Solid waste management

UNIT – X: Testing & Quality Control
Water analysis – Analysis of leather chemicals – Analysis of process liquors – Physical and chemical testing of leathers – Standards and quality control measures in pretanning, tanning, post tanning and finishing – Chemical and physical properties required for various finished leathers – Testing and prevention of mould growth in leather.

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