Design for Extrusion Dies
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Follow on Instagram for UpdatesDesign for Extrusion Dies Syllabus — Unit-wise Content
The official GTU curriculum for Design for Extrusion Dies (subject code DI05023071) as prescribed for AI & ML · Semester 5 divides the course into 4 units, covering 35 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 (DI05023071)Unit 1 Polymer Melt Rheology
- 1.1. Basic Definitions: shear, shear stress, shear rate & viscosity
- 1.2. Viscosity under simple shear: Effect of shear stress and shear rate on viscosity of melt
- 1.3. Velocity profiles of Newtonian and Non-Newtonian fluids
- 1.4. Types of flow
- 1.5. Elasticity under simple shear: Visco-elasticity, viscous flow and elastic flow
Unit 2 Basics of Die Design
- 2.1. Factors affecting die design
- 2.2. General die design rules
- 2.3. Materials for extrusion dies
- 2.4. Equation for output of Newtonian fluid through tubular cross section
- 2.5. Land length and its importance in die design
- 2.6. Die geometry
- 2.7. Die restriction methods and its effect on melt flow
- 2.8. Die streamlining methods
- 2.9. Melt fracture phenomenon Die-swell and its effect on extrudate
Unit 3 Die Adaptor, Breaker Plate & Screen Pack Die Adaptor
- 3.1. Significance of die adaptor
- 3.2. Position of die adaptor and its fitting methods
- 3.3. Factors to be considered for adaptor design Screen Pack & Breaker Plate
- 3.4. Position and functions of screen pack and breaker plate
- 3.5. Various breaker plate designs Factors for correct breaker plate assembly
Unit 4 Types of Extrusion Dies
- 4.1. Types of various extrusion dies with respect to melt flow direction
- 4.2. Straight through, crosshead, offset dies and its applications Flat and Tubular Film Dies
- 4.3. Tubular (blown) film dies – side fed & center fed dies
- 4.4. Constructional features of tubular dies
- 4.5. Comparison of side fed & center fed tubular dies
- 4.6. Constructional features of flat film die
- 18. 40 GUJARAT TECHNOLOGICAL UNIVERSITY Program Name: Diploma Engineering Level: Diploma Branch: Plastics Engineering Subject Code: DI05023071 Subject Name: Design for Extrusion Dies w.e.f. 2026-27 http://syllabus.gtu.ac.in/ Page 3 of 4
- 4.7. Multilayer film dies and its features
- 4.8. Compare feed block and multi-manifold multilayer dies Wire Coating Die
- 4.9. Pressure and tubing die
- 4.10. Constructional features of wire coating die and functions of various components Pipe & Tube Die
- 4.11. Constructional features of tube die
- 4.12. Construction features of straight through and offset pipe die
- 4.13. Significance of internal and external sizing calibrators Sheet Dies
- 4.14. Constructional features of coat hanger sheet die
- 4.15. Fish tail die constructional features and its applications Dies for Solid Sections Dies for Rod, tape and profiles Total 45 100
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