Rubber Engineering & its Economics — Summer 2024

What is the function of nip in two roll mill? Explain in detail.

Explain the various stages associated with mixing process.

Write about the construction and working of Internal Mixer.

List the various methods of mould cleaning.

Write down the advantages and disadvantages of compression moulding process.

Discuss the following moulding problems with their causes and remedies: (i) Backrinding (ii) Bloom.

Explain the rotating table type press and tilting head type press respectively.

Define the given terms: (i) Extrusion (ii) Dead Spot (iii) Extruder Chocking.

Differentiate Cold Feed Extruder and Hot Feed Extruder.

Explain the injection moulding process. Which products can be prepared by injection moulding process?

Define the given terms: (i) Lead (ii)Pitch (iii) Flight

Write in brief about extruder as strainer and ‘plasticator’ respectively.

List the different types of injection units used in Injection Moulding machine. Discuss any two.

What is the most common injury caused by working with machines unsafely?

Explain the main sources of potential danger, typical causes of accident and method of guarding for mixing mill and calendar respectively.

What do you mean by frictioning? Discuss frictioning operation with respect to calendar.

What are the basic principles of machine guarding?

Write about the device used to control the thickness of rubber sheet. (c•) Discuss in detail about the problems associated with extrusion process. •

•) Define the terms: - (1)Cost (2) Profit (3) Incentives.

Write Short note on the Major Facts about Law of Demand.

Explain the main role for Production engineer in Rubber Industry.

Define the terms: - (1) Demand (2) Supply (3) Trade Cycle.

Outline the various functions of Management in Rubber Industry.

Explain the main role for a Marketing engineer in Rubber Industry.