Injection Molding Technology
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Follow on Instagram for UpdatesInjection Molding Technology Syllabus — Unit-wise Content
The official GTU curriculum for Injection Molding Technology (subject code BE04023011) as prescribed for Plastic · Semester 4 divides the course into 6 units, covering 42 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (BE04023011)Unit 1 INTRODUCTION
- Overview of Injection molding Techniques
- Injection Machine Operation
- Types of Injection Molding
- Basic Principles of Reciprocating Screw Machine
- Basic Principles of Plunger Machine
- Injection Cycle
- Cycle time estimation
- Different Terminologies
- Advantages and Disadvantages of Injection Molding
Unit 2 CONSTRUCTIONAL FEATURES
- Injection unit: Hopper: Importance of Hopper & Types of Hopper
- Barrel: Importance of Barrel & Types of Barrels
- Thermocouple: Importance of Thermocouple Screw: Screw Types
- Screw Plastification
- Characteristics of Screw
- Screw Conveying
- Screw Tip Assemblies
- Screw Drives Nozzle: Definition & Types like: Standard Nozzle
- Needle Type Nozzle
- Nylon Nozzle, Etc
- Clamping Unit: Clamp Mechanisms
- Toggle Clamp
- Hydraulic Clamps
- Comparison of Hydraulic & Toggle Clamp
- Calculation related to shot capacity
- injection pressure
- Projected area and clamping tonnage Specification of Injection Molding Machines
Unit 3 PROCESS DETAILS
- Machine Startup
- Running and Shutdown Procedure
- Process Variables
- Pressure profile in cavity and PVT diagram and its importance
Unit 4 INJECTION MOLDING OF THERMOSETS
- Introduction of the Process
- Characteristic features of the thermoset injection molding
- Process Operations
- Typical Startup
- Running and shutdown procedures
- Process variables
- Materials for Injection Molding of Thermoset
- Comparison between Injection Molding of Thermoplastic and Injection Molding of Thermoset
Unit 5 AUXILIARIES FOR INJECTION MOULDING MACHINE
- Hopper Dryers
- Hopper loaders
- Mold Temperature Controllers : Cooling Towers and chilling Plants and its importance
Unit 6 FAULTS AND CORRECTION (TROUBLE SHOOTING)
- Brittleness -Bubbles and voids-Crazing-Discoloration-Flashing-Flow marks-Silver Streaks-Nozzle Drooling--Short Shots-Sink Marks-Sprue Sticking-Cavity Sticking-Surface Sticking-Warping-Weld Lines
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