Unit 1 Introduction

4 lecture hours

• Introduction to product design
• steps for product design
• factors to be considered while designing the product
• Reasons for failure of plastic product
• Role of product designer
• role of End user’s requirement in product designing

Unit 2 General design considerations for Part Design

12 lecture hours

• General design considerations like wall thickness
• ribs and bosses
• fillets and radii
• weld lines
• taper or draft
• external and internal threads
• parting lines
• Lettering and embossing
• size and location of Gate

Unit 3 Selection of plastic materials for making product

8 lecture hours

• Selection of plastic materials used for making product-Different plastic materials used for making a product- short term and long term properties and plastic materials- comparison of various plastic materials – optimization of material

Unit 4 Relation of process selection with product design-

• Various plastic processing methods –its advantages and disadvantages- comparison of plastic processing methods with respect to product shape
• cost and quality. 8 Subject Code: 3172318 w.e.f
• AY 2018-19 Product design features related to Injection Moulding
• Blow Moulding
• Compression moulding
• Transfer Moulding
• Rotational Moulding
• etc.-Optimization of the process

Unit 5 Design of Specific Products

10 lecture hours

• Procedure for designing pipes
• hinged products
• pump impellers
• chemical reactors
• insulated wires for electrical applications
• contact lens
• Car bumper
• overhead water storage tank
• disposable cups
• gasket and seals etc