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Posted By: b.thirumaya prabhu Member Level: Gold Posted Date: 22 May 2008
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2007 Amity School of Distance Learning B.Tech Plastic and Polymer LT341 – PRACTICE OF LEATHER MANUFACTURE - II 2007 University Question paper
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ANNA UNIVERSITY :: CHENNAI – 600 025
MODEL QUESTION PAPER
VI - SEMESTER
B.TECH. LEATHER TECHNOLOGY
LT341 – PRACTICE OF LEATHER MANUFACTURE - II
Time: 3hrs Max Marks: 100
Answer ALL Questions
PART – A (10 x 2 = 20 marks)
1. What are the best raw materials for glace kid and cabretta leathers?
2. What is the objective of myrobing in E.I. tanning?
3. Justify your choice of a deliming agent for gloving leather.
4. Mention the reason for grain cracking of a wet blue leather.
5. Contrast the properties of upper Vs lining leather.
6. Drape is for _____________ whereas ____________ is for gloving leather.
7. Mention two demerits of a protein finish.
8. What is meant by VOC?
9. What is meant by double hiding?
10. What is the cause for fatty spue on leather?
PART – B (5 x 16 = 80 Marks)
11. Describe a process with rationale for the production of glace kid upper leather starting from a suitable raw material.
12.a) Discuss the strategies for the production of suede garment leathers starting from wet blue goat skins and compare the same with process technology for making the same from E.I.skins.
OR
12.b) Describe a process with justification for the production of full chrome goat nappa leathers.
13.a) Detail a process for the production of a double face garment leather starting from a suitable raw material.
OR
13.b) Describe a process for the production of formaldehyde and fish oil free chamois leather from wet salted skins.
14.a)i) Discuss the suitability of E.I. and wet blue leathers for the manufacturing of lining leathers. (6)
ii) Outline a process with rationale for the production of lining leather from a suitable semi tanned leathers. (10)
OR
14.b) Write short notes on
(i) Ostrich skin processing
(ii) Nappalan finish
(iii) Screen printing
(iv) Foam finish
15.a) Describe a process technology for the production of gloving leather from wet salted sheep skins.
OR
15.b) Write short notes on
(i) Enzymes in beam house operations
(ii) Wet white leathers
(iii) Polyurethane binders
(iv) Top coat for white leathers.
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