Unit 1 Reaction Injection Molding

8 lecture hours

•  Advantages & Disadvantages of RIM,  Process Steps
•  Components of Reaction Injection Molding  Applications of RIM

Unit 2 Foam Processes

•  Introduction & Definitions related to foam plastics  General Production methods of foam  Introduction to Blowing agents  Specific Foam Materials: Types
• Production Methods and Uses - Flexible foams:- Polyurethanes
• Cellular Polyethylene
• Cross linked Polyethylene Foams
• PE related foams
• Foamed Vinyl(Open-cell Vinyl Foams & Closed-Cell Vinyl Foams)
• Silicone Foam
•  Rigid Foams:- - Polyurethanes
• Expanded Polystyrene Foam
• Expandable Polystyrene  Thermosetting Foams - Phenolic Foams - Epoxy foams 10 Subject Code: 3162308 w.e.f
• AY 2018-19 - Urea-Formaldehyde Foams  Syntactic Foams  Structural Foam:- Advantages & Disadvantages of Structural Foams  Structural Foam molding Techniques- Low Pressure Process and High Pressure Process  Sandwich Foam Molding

Unit 3 Calendering

9 lecture hours

•  Introduction  Raw Material Selection:- Polymer
• Fillers  Raw Material Preparation:- Premixing
• Gelation of Premix  Calenders:- Definitions of important parts of calendar
•  Types of Calenders like Superimposed
• Offset and Z Calenders  Calendering Process
• Calender unit layout  Types of Circulating Systems  Calender Roll composition
• Drilled roll
• Cored Roll
• Roll shapes  Calender Drive Systems  Calender Heating Systems  Calender Faults & Remedies  Post Calendering Processes  Applications of Calendered sheet

Unit 4 Miscellaneous Processes

7 lecture hours

•  Casting  Encapsulation  Radiation Processing:- - Ionization Radiation- Crosslinking Thermoplastic for Wire and Cable
• Crosslinking Thermoplastics for Packaging Film
• Crosslinked Foamed Resins
• Graft Copolymers
• Radiation induced Curing of Coatings
• Irradiated wood-plastic Composite
• Irradiated Concrete-Plastic Composites - Non Ionizing Radiation-Ultraviolet Radiation
• Infrared Radiation
• Dielectric or Radio-frequency curing
• Microwave energy Radiation

Unit 5 Advanced Injection Molding Techniques

8 lecture hours

•  Gas Assisted Injection Molding  Water Assisted Injection Molding  Insert Molding  Multicolor molding  Mucell technology