Draw a neat labeled diagram of Corona Discharge technique & state its use.
[3 marks]List various forms of adhesives & explain any two briefly.
[4 marks]Explain the Hot Gas Welding Technique to join plastics by thermal bonding
[7 marks]List various surface treatment methods & briefly discuss its importance.
[3 marks]Identify and state the advantages, disadvantages and applications of screen printing.
[4 marks]List the methods used for Powdered Plastic coating & explain the Fluidized Bed Coating technique with a neat labeled diagram.
[7 marks]Explain the working of a Hot Plate welding technique used to join plastic parts, with a neat diagram.
[7 marks]List the different machining operations done on plastics & explain any one.
[3 marks]Explain the working of a high frequency welding technique to join plastics with a neat diagram & list its applications.
[4 marks]Describe with necessary diagram, the Vacuum Metallizing process to obtain Metallic coating on plastic parts.
[7 marks]Draw a labeled diagram of Flexographic printing technique
[3 marks]Describe the Electrostatic Spraying technique with a neat sketch for powdered plastic coating.
[4 marks]Discuss with a neat diagram, the parts of an Ultrasonic welding assembly used for thermal bonding of plastics & explain its working.
[7 marks]Explain Flocking process & list its uses.
[3 marks]Discuss the In Mold decorating technique to decorate plastic products during molding operation.
[4 marks]Describe the working of a Rotogravure printing process with a labeled sketch. Page 1 of
[2 marks]State the steps of flame treatment process used for surface treatment of plastics.
[3 marks]Explain the Electrolytic Plating technique for coating plastics.
[4 marks]Describe the Hot foil stamping method used to decorate plastic part with a neat labeled diagram.
[7 marks]Describe briefly the water transfer process used for decorating plastics.
[3 marks]List & explain the general rules to be observed for good cementing of plastics.
[4 marks]Discuss the steps in Pad Printing Process with necessary labeled diagram.
[7 marks]List different finishing operations done on plastics and explain any one.
[3 marks]Explain briefly about molded- in and post-molded inserts used as mechanical fasteners.
[4 marks]Describe the working of Electrostatic Fluidized Bed coating used for powdered plastic coating with a neat sketch Page 2 of
[2 marks]