Table of Contents
Wear and Lubrication
- W\ear Caused by Resin Action
- Abrasion
- Corrosion Caused by Coolant
- Corrosion Caused by Atmosphere
- Lubrication in Moulds
- Pressure of lubrication
- Avoiding fatigue in moulds
- Material Selection
- Finishing
- Product Shape
- Mould and Mould Parts Handling Safety
- Marching of a Meld Part
- Lifting Holes on the Faces of a Plate
- Eye Bolts
- Lifting and Slinging Theory
- Do,s and Con,ts of Eye Bolt Usage
- Mounting of Mould in Machine
- Larger Moulds
- Quick Mould Changers
- Latches
- Latches For Mould Servicing
Identification & testing of Plastics
- Chemical resistance
- Polyethylene Terephthalate Films
- Typical injected applications
- Typical sheet/film application
- Trade names
- Foamed Plastic
- Foamed Plastics
- There are Four main Types of Plastic insulation
- Extruded Polystrene (XPS)
- Extruded Polyethylene (XPE)
- Expanded Polystyrene (EPS)
- Polyurethane (PUR) and Polyisocyanurate (PIR)
- Tensile Elongation
- Tensile Modulus of Elasticity
- Izod Impact Strength Testing of Plastics
- astmD256
- Cup Flow Test
- Measurement of Spiral Flow
Compression Moulding
- Compression Modeling
- Compression molding process
- Compression Molding Press
- Down Press
- Specification of Compression Molding Press
- Materials used in Compression Molding
- Types of Compression Moulds
- Open Flash Type
- Performing
- Pre heating
- Mould heating
- Heating Methods Used in Compression moulds
- Steam Heating System
- Hot Water/Oil Heating
- Electrical Heating
- Resistance heating
- Breathing
- Bulk Factor
- Advantages of Compression Moulding
- Transfer Moulding
- Description of Process
- Moulding Cycle
- Material Used in transfer Moulding
- Type of Transfer Mould
- Bottom Plunger Type Mould
- Advantages of Transfer Moulding
- Disadvantages of Transfer Moulding
- Compression Mould Desing
- Machines
- Compression and Transfer Presses
- Two General Type of presses are used
- Hand Moulds
- Semiautomatic Mould
- Automatic Mould
- Flash Moulds
- Cross Section of a simple flash Mould
- Advantages of flash-type compression moulds are
- Semi Positive Mould
- Design of Mould Cavity and Punch
- Loading Chamber Design
- Open Flash Mould
- Loading Chamber Dimensioning and Design
- Design of the mould cavity
- The Punch
- Heaters
- Transfer mould Desing
- Transfer Mould Parts
- Pot Transfer Mould
- The transfer pot
- Transfer mould cavity considerations
- Parting line location
- Materials for transfer moulding
- Gate location
- Venting of Transfer Moulds
- Guide pins
- Ejector Pins
- The plunger
- Runnes systems
- Gating transfer Moulds
- Mould Design
- Types of Machines
- High-frequency Preheating
- Transfer Moulding
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