The energy from the heat source had to be localized to maintain the accuracy of melt-zone size.
Winding Speeds
High heat flux densities were required to achieve acceptable winding speeds.
Solution
Heat
For tape widths of 6 mm or less, a Model 4085 Infrared Spot Heater supplied the heat to the thermoplastic composite tape. For tape widths exceeding 6 mm, Model 5194-02 Infrared Line Heaters supplied the heat to the thermoplastic composite tape.
Power Control
Model 664F Phase Angle SCR Power Controllers controlled the power to the Infrared Spot Heater and Infrared Line Heaters.
Benefits
Focused Heat
Both heater types were able to focus the heat to maintain the accuracy of melt-zone size.
Winding Speeds
By providing heat flux densities as high as 650 watts per square inch (100 watts per square cm), the heaters enabled the manufacturer to achieve acceptable winding speeds.
