Application Data
An important operating criteria for infrared heating process is the maximum power density at the surface of the object to be heated which limits the rate of heating. The maximum power density will be governed by the power density at which thermal damage occurs due to overheating and is particularly critical for non-metallic materials such as plastic films and coatings.
Maximum power densities can be determined from the radiated power density of the source and the view factor.
In practice the maximum power density for a temperature sensitive material can normally only be determined by experiment. The table below is indicative of process types and power density requirements.
Application Table
| Process | Product Temp. °C. | Wavelength | Power Density Kw/M2 |
| Textiles, Garments, Carpets |
| Latex Backing Carpet | 130 | LW | 7.5-15 |
P.V.C Backing Carpet
Heat Setting Transfers | 100/150 | LW
LW | 15
10 |
| Screen Printed T-Shirts | 100 | LW&MW | 7.5 |
| Plastics |
| P.V.C. Paste Curing | 100/150 | MW/LW | 22 |
| P.V.C. Shrinking | 100/150 | MW/LW | 10 |
| Polythelene Forming | 110/120 | MW/LW | 20-30 |
| Polypropylene Forming | 160/170 | MW/LW | 15-20 |
| Polystyrene Forming | 130/140 | MW/LW | 15-20 |
| A.B.S. Forming | 170/190 | MW/LW | 15-20 |
| Water Removal | 50/120 | LW |
|
| Adhesives |
| Paper Labels | 150/200 | LW | 10 |
| Footwear Soles | 150/200 | LW | 10 |
| Glue Coating on Paper | 150/200 | LW | 5 |
| Paint Stoving |
| Steel Panels - Alkyd | 160 | MW/LW | 6 |
| Steel Panels - Epoxy | 180 | MW/LW | 12.5 |
| Steel Panels - Acrylic | 200 | MW/LW | 12.5 |
| Car Bodies | 150 | MW | 5-10 |
| Epoxy Lacquer | 180 | MW | 12.5 |
| Screen Printing |
| Instrument Dials - Plastic | 80 | LW | 5 |
| Fascia Panels - Aluminium | 180 | MW | 12.5 |
MW - Medium Wave
LW - Long Wave |
Figures quoted are indicative of process requirements and do not constitute a guarantee.
