Seminar Outline
- Introduction & Overview
- Purpose
- Perspectives on the plastics' industry, manufacturing
- Profits
- What is your product
- The components of a successful plastic's application
- Concurrent engineering and its benefits
- The four molding categories
- Machine conditions vs. Plastic conditions
- Machine and Molding Overview
- When and with what did the molding industry get started
- Basic injection molding concept
- Machine components
- Machine component functions
- Videos of machine components and functions
- Optimizing First Stage: Plastic Flow Rate
- How plastics flow, viscosity
- Viscosity curve
- Viscosity vs. temperature, lot variations and injection rate
- Flow balance
- Cruise control on injection molding machines
- Two stage molding
- Case histories
- Non-return valve (check ring)
- Nozzles/mixers
- Nozzle tips
- Plastic Pressure
- Basic hydraulics
- Hydraulic Pressure vs. Melt Pressure
- Back Pressure
- Intensification Ratio
- Pressure Loss
- 1st to 2nd state switchover variations
- Gate seal vs. unseal
- Pressure vs. time graphs
- Minimizing cycle, what limits cycle time
- Clamp force
- Platen wrap
- Platen Protection for Engineering Resins
- Pressure Loss Documentation
- Cooling Rate and Time
- Cycle Percentage
- Three types of cooling
- Turbulent Flow
- Series vs. parallel circuits
- Cooling issues
- Newer methods for high temperature molds
- Infrared Imaging of mold and part
- Plastic Temperature (What's it like for the plastic to go through the machine)
- The hopper
- Drying
- The feed throat
- Barrel vs. melt temperatures
- Screw components
- Screw design for, properties, melt uniformity, color mixing & resin/color changes
- How plastics melt
- Back pressure
- Screw problems
- How to measure
- Miscellaneous
- Process Optimization Procedure
- Universal Setup Sheet Documentation
- Recommended resources and websites
- Hot Runner Startup
- Energy Saving Tips
- Items for sale
- Knowledge survey
- Evaluation