Plastic Manufacturing Technology — Winter 2018

Define Plastic Processing Techniques.

Define Weld line, flash & Warpage.

Compare :Thermoplastics Injection Molding with Thermoset Injection Molding Process.

Define Shot capacity & Injection Pressure.

Define back pressure ,Suck back & Drooling.

Explain the function of clamping system & its types.

Write short on Injection Mould.

Explain compression moulding Process with neat sketch.

Explain the types of mold used in compression molding with diagram.

Write comparison b/w compression & transfer moulding process.

Explain about tie layer.

Explain screw nomenclature with neat diagram.

Explain faults, causes and remedies of transfer moulded article

What is L/Dratio and compression ratio.

Explain the function screen pack & breaker plate.

Write short note on types of dies used in extrusion.

Differentiate b/w single stage & two stage blow moulding process.

Differentiate b/w single screw & twin screw extruder.

Explain the manufacturing process of RPVC pipe with line diagram.

Write short note on multilayer blow moulding process.

Write short note on pinch-off in blow moulding process.

What is stretch Blow Molding Process? Why it is used? Explain with advantages & disadvantages.

Explain the principle of thermoforming process.

Discuss matched die forming.

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