Unit 1 Stretch Blow molding

6 lecture hours

• Materials, and Machines-Cold Tube Process
• Two stage process, and Single stage process-Advantages and disadvantages
• Preform Designing
• Extrusion stretch blow molding
• Injection Orientation Blow Molding

Unit 2 Co-Extrusion Blow Moulding

8 lecture hours

• Co-Extruded Structure
• Arrangement of Extruders for Co-Extrusion
• Commercial Multi-Layered Structures
• Product design for Co-Extrusion Systems
• Co-Extrusion Equipments like Extruders
• weight feeder
• Melt pumps
• Melt pipes
• Start-up and shut down procedure

Unit 3 Other Blow Molding Processes

• Neck ring process
• Drape process
• Dip / displacement processes
• Blow molding of irregular shaped parts

Unit 4 Advanced Extrusion Techniques

• 4 Twin screw extruder -Types of Twin Screw- Co Rotating & Counter Rotating
• Intermeshing and Non- intermeshing
• -Compare Twin Screw and Single screw extruder

Unit 5 Subject Code

5 lecture hours

• AY 2018-19 -Vented screw 5 Co-extrusion Techniques -Introduction - Materials used in coextrusion -Dies for coextrusion -Advantages of coextruded products

Unit 6 Reactive Extrusion

4 lecture hours

• Reactive Extrusion: Introduction
• how the extruder behaves like a chemical reactor
• Twin screw extruder as reactive extruder
• why corotating extruders preferred
• dispersive and distributive mixing
• screw design concepts
• types of low, devolatilization
• grafting of maleic anhydride on polyolefins
• partial glycolysis of PET conversion of polymer back to monomer

Unit 7 Specialized Processes

10 lecture hours

• Extruder details
• processing conditions
• process description
• raw materials and applications of • Nylon braided pipes
• • Hose pipe
• • Reinforced pipes
• • Fishing net, • Heat shrink film
• • Cling film
• • Corrugated sheets and pipes • Air Bubble Films : • Retort Films
• • Lacquered Films: • Cast Polypropylene (CPP) films