Download SGBAU B-Tech 8th Sem Poly Plast Polymer Processing II Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 8th Sem Poly Plast Polymer Processing II Previous Question Paper

B.Tech. Eighth Semester (Polymer (Plastic) Technology) (CGS System)
11146 : Polymer Processing-II : 8 PP 0|
P. Pages : 2 l AW - 3505
. , lllllllllllllllllllllll
Time : I'hree Horus . o 5' 1 6? .' Max? Marks : 80
Notes : 1. Answer three question from Section A and three question from Section B.
2. Due credit will be given to neatness and adequate dimensions.
3. Assume suitable data wherever necessary.
4. Diagrams and chemical equations should be given wherever necessary.
5. Illustrate your answer necessary with the help of neat sketches.
6. Discuss the reaction, mechanism wherever necessary.
7. Use of pen Blue/Black ink/rc?ll only for writing the answer book.
SECTION ? A
1. What do you mean by extrusion? Explain in detail the principle ofextrusion and discuss in 13
detail with sketch. nomenclature of extrusion.
0R
2. a) Explain in detail mechanism of different zones of an extrusion. 7
b) Explain in detail. cast ?lm manufacturing process. 6
3. a) Explain twin screw extrusion and compare with single screw extrusion. 7
b) Explain co-cxtrusion. 6
OR
4. 3) Explain Blown ?lm manufacturing process using side l'cd dies. 7
b) Explain in detail comparison of extrudcr and lnjection molding machine. 6
5. a) What do you mean by blow molding? Explain in detail. wheel type continuous EBM. 8
b) Explain blow molding cycle. 6
0R
6. 2]) Explain in detail with sketch? Injection blow molding process. 7
b) Explain in detail Parision programming methods uscd in EBM. 7
SECTION ? B
7. a) What do you mean by calendcring '? Explain with neat sketch calcndering process using 7
inverted 'L' type four roll calenders.
b) Explain two roll, three roll and four roll calendering process. 7
AW - 3505 1 P.T.O
0R

b)
10. a)
b)
11.
12. :1)
Explain in detail. different types ol'dcthrmaliun compensation methods used for
controlling quality.
Compare calendering and extrusion meuss
Explain in detail.
i) S( reen printing
ii) Hot stamping.
()R
Explain vacuum metalli/zmion proccsx for plastics.
Explain solvent cementing process.
Explain in detail
i) Wet spinning, ofplustic ;
ii) Equipments used m vacuum forming.
OR
What do you mean by spinning?? Explain in detail with sketch, melt spinning ot?plastics.
13
13
b) What do you mean by vacuum forming? prlum with skeLch, Drape forming procesb.
x?k?'iisksikk
AW - 3505 2