Download AKTU B-Tech 8th Sem 2016-17 EC802 Development Of Wet Processing Question Paper

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B.TECH.

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THEORY EXAMINATION (SEM–VIII) 2016-17

DEVELOPMENT OF WET PROCESSING

Time: 3 Hours

Max. Marks : 100

Note: Be precise in your answer. In case of numerical problem assume data wherever not provided.

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SECTION-A

Explain the following:

1. What do you mean by delustering?
2. What is difference between felting and milling of wool?
3. Enlist different factors influencing heat setting of polyester fabric

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4. What do you mean by antistatic finish?
5. Write down the names of antistatic finish.
6. What types of finishes applicable on cotton fabrics?
7. What types of finishes applicable on Lenin fabrics?
8. What do you mean by scrooping?

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9. What is sanforisation?
10. What is the aim of napping?

(10×2=20)

SECTION-B

Attempt any five of the following:

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1. Give the mechanism of antistatic finish.
2. What is raising? What is the purpose of raising in textile finishing? Describe with neat diagram the working of raising machine.
3. Name various test for assessing water repellency of textiles.
4. What is difference between fire repellent and water fire proof fabric?
5. What do you mean by water repellency? Discuss mechanism of water repellency?

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6. Name various methods for producing flame retardant synthetic fibre textile. How flame Retardant finish applied on polyester fabrics.
7. What is difference between water repellent and water proof fabric?
8. Discuss the object and techno-physical aspects of calendering. Give the Classification of Calendering process.

(10×5=50)

SECTION-C

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Attempt any two of the following:

3. Explain principle and working of a Beetling machine for finishing of linen fabrics.
4. How permanent setting of woolen fabrics is carried. Discuss by giving appropriate figure and working of machine.
5. Enlist various calendars available. Discuss about Swizzing calendar and Chasing calendar in detail.

(15×2=30)

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