Plastics Processing Technology
Get the full GTU study material, English & Gujarati textbook PDFs, syllabus curriculum, and solved previous year question papers.
English Book & Chapters
English Book Coming Soon
We are working hard to add this material. Stay tuned for updates!
Follow on Instagram for UpdatesGTU Previous Year Papers
Papers Coming Soon
We are working hard to add this material. Stay tuned for updates!
Follow on Instagram for UpdatesPlastics Processing Technology Syllabus — Unit-wise Content
The official GTU curriculum for Plastics Processing Technology (subject code 2712402) as prescribed for PE · Semester 1 divides the course into 5 units, covering 23 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 (2712402)Unit 1 Introduction & Injection Moulding
- Basic principles – Classification of processing methods – Effect of polymer properties on processing behaviour
- Injection Moulding – Definition of terms – Specification – Types of machines used – Part & their functions – Cycle time – Process variables & its effect on Moulding quality – Cavity pressure profile – Factor influencing moulding shrinkage
- annealing – Frozen-in – Stresses – Types of clamping systems and their merits & demerits – Start up and shut down procedures – Processing parameters and special precaution to be taken while processing of Engineering plastics such as Nylon
- Acetal, PC, etc.
- - Common moulding defects
- causes and remedies
Unit 2 Compression Moulding
- Introduction – principles – definition of Terms – Compression moulding process – specifications – machine used – Bulk factor – flow – cure relationship – ageing of compound – cup flow and spiral flow tests & its significance – cycle time - Preforming
- preheating – Methods
- machine used
- merits & demerits - Influence of process variables such as temperature
- part size & configuration on quality and cycle time - Compression moulding of Thermoplastics – cold forming – sintering – Optimising process parameters & Trouble shooting - Merits & Demerits of Compression moulding - Finishing operation
Unit 3 Transfer Moulding & Thermoset Injection Moulding
- Transfer Moulding - Principles – Types of process – machine used – pot transfer
- plunger transfer & screw transfer moulding techniques – moulding cycle – specification – merits and demerits of transfer moulding – Theoretical calculation of pressures – line pressure
- Injection ram pressure – trouble shooting
Unit 4 Extrusion
- 13 Introduction – principles – classification of extruders – single screw extruder – specification – screw nomenclature – types of screws – L/D ratio
- compression ratio
- back pressure – factors governing back pressure – output and factors affecting output heating & cooling systems – breaker plate – screen pack & its functions – screw & hopper cooling-die entry effects and die exit instabilities – shark skin
- melt fracture & bambooing
- Twin screw extruder – principle – types – process – merits & demerits - Vented barrelextruder – hopper loading devices - Drying equipments - Process
- machinery – down stream equipments – dies for producing products such as – film – blow film
- cast film – Sheets - Tubes / pipes
- corrugated pipes - Mono filaments - Box strapping - Coating / Lamination
Unit 5 Blow Moulding
- Introduction – Principle – Processes – Extrusion Blow Moulding – Injection Blow Moulding – Process control – Parison programming – Moulds – Machine used – Constructional features – Material and design factors affecting bottle performance – Trouble shooting – Stretch Blow moulding – Process outline
Study on Android App:
