Maharashtra State Board of Technical Education 2012-6th Sem Diploma Textile Technology for in in Textile ManufacturerSubject Man Made Fibres Technology(12704) - Question Paper
MSBTE Sample ques. Paper for Diploma in Diploma in Textile Manufacturer
Sixth Semester
Subject Man Made Fibres Technology(12704)
Scheme - E Sample Question Paper Course Name : Diploma in Textile Manufacturer Course Code : TX
Semester : Sixth
12704
Subject Title : Man Made Fibres Technology
Time: 3 Hrs.
Marks
: 100
Instructions:
1. All questions are compulsory
2. Illustrate your answers with neat sketches wherever necessary
3. Figures to the right indicate full marks
4. Assume suitable data if necessary
5. Preferably, write the answers m sequential order
Q.l A) Attempt any THREE of the following: 12 Marks
a) Classify the Man made Fibres.
b) Gives the values of Density, Tenacity, Breakmg elongation, and moisture regain for PET fibres.
c) Enlist the major steps in viscose fibre manufacturmg process.
d) Describe the spinning process of Viscose fibre.
Q.l B) Attempt any ONE of the following: 06 Marks
a)Discuss the following physical property of viscose fibre.
i. Tenacity
iii. Creep
iv. Density
v. Elongation
vi. Absorbency
ii. Moisture content
b) Write the chemical structure of carbon fibre & list the physical properties of carbon fibres and give their value.
Q.2 Attempt any FOUR of the following:
16 Marks
a) Draw schematic diagram of melt spinning process and state the functions of each parts.
b) Describe the manufacturing process of acetate rayon.
c) What are the desirable characteristics of fibre forming polymers?
d) Write the chemical structure of nylon 6 and state its four important applications.
e) Discuss the physical properties of Elastomeric fibres.
f) Describe the extensibility and recovery mechanism of elastomeric fibres.
Q.3 Attempt any FOUR of the following: 16 Marks
a) Compare Melt spinning, Dry* spinning and Wet spinning.
b) Give the four applications of PET and Acrylic fibres.
c) Describe the polymerization process of HDPE.
d) Draw the schematic diagram of air texturising method & describe its working.
e) What is Micro fibre? Give examples.
Q.4 A) Attempt any THREE of the following: 12 Marks
a) Draw the block diagram of manufacturing of carbon fibres.
b) Discuss the physical property of Kevlar fibres.
c) What are the requirements of spin finish for texturising purpose?
d) Draw and explain the false twist texturising process.
Q.4 B) Attempt any ONE of the following: 06 Marks
a) Draw and label the flow diagram of production of tencel fibre.
b) Explain the details process of production of carbon fibres.
Q.5 Attempt any FOUR of the following: 16 Marks
a) Heat setting of fibres improves their dunensional stability. Justify the statement.
b) Explain the process of drawing filament yarn using draw winder or draw twister.
c) Why undrawn yams are required to be drawn? Explain this with example.
d) Match the pairs:
i. Polyester 1) Salt Dehydration
ii. Nylon 66 2) Tyre Cord in. Nylon 6 3) Tg = 85C
iv. Acrylic 4) Tm = 100C
5) Free radial Polymerization
6) Sanitarian fibre
e) Explain the indices of blendmg.
f) What is migration? & how migration index is determined?
Q.6 Attempt any FOUR of the following: 16 Marks
a) Write the effect of blend ratio on properties of polyester blended fabrics.
b) Give the flow' diagram of producmg polyester wool blends.
c) What is spinablity of fibres?
d) Arrange the following fibres in descending order of Tenacity, Tg, Moisture regain and Specific gravity of PET, Nylon 66, Acrylic.
e) What are the various stages of cold drawling and explain various theories of cold drawing.
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