1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
BE SEMESTER-V EXAMINATION SUMMER 2017
Subject Code: 153405 Date: 15/05/2017
Subject Name: Plastics Manufacturing Technology (Institute Elective II)
Time: 02:30 PM to 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Give in detail about the types of processing techniques and the selection criteria for the processing methods.
07

Explain about thermoset injection moulding process parts and their respective functions with a neat sketch
07
Q.2

Write about the merits demerits of compression moulding process?
07

With a neat sketch diagram explain the various types of clamping systems
07
OR

List and Explain material characteristics required for the thermoforming process
07
Q.3

What is drape forming? Give the advantages of pressure forming over vacuum
forming?
07

Explain the extrusion blow moulding process in detail with neat sketch.
07
OR
Q.3

Explain the construction and working of injection blow moulding along with its applications in a neat sketch
07

Describe twin screw extruder along with its merits and demerits with a neat sketch
07
Q.4

Discuss the Trouble shooting and its remedies for the Compression Molding Machine
07

Draw generalized Screw used for Injection molding. Explain any three terminologies related to it.
07
OR
Q.4

Explain the types of molds used in compression molding with diagram
07

Compare: Twin screw extruders with Single screw extruder
07
Q.5

Explain vented barrel extruder operation with a neat sketch along with its applications
07

Explain the matched die moulding and plug assisted forming with neat sketch.
07
OR
Q.5

What is parison programming? Explain about it in detail.
07

Explain the terms: ratio Compression ratio (3)Shot capacity
07