Thermal Imaging for Film
Extrusion Processes
Film Extrusion & co-extrusion Extrusion coating Laminating Embossing
Photo: Courtesy of EC
- Extrusion coating
- Vinyl calendering
- Blow molding
- Thermoforming
- Blown film extrusion
- Cast film extrusion
- Biaxially-oriented film
- Sheet extrusion
- Laminating & embossing
Raytek Solutions for the Plastics Industry
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Biaxially-oriented polypropylene
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Blown film
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Thin PVC film
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Thermoforming
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Thin film plastics
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Oriented polyester
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Polyester film
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Print drying polyester
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Plastic extrusion
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Photographic film
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PP Coating
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PVC calendering
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Plastic calendering
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Plastic laminating, film coating
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Plastic calendering
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Plastics forming
Noncontact
Temperature
Measurement
for
Plastics
Applications
to conform to the shape of a mold using vacuum or pressure.
In all thermoforming processes, a plastic sheet is:
- Heated in an oven to a controlled softening temperature
- Stretched or drawn to conform to the mold contours
- Cooled to the temperature at which the part becomes rigid and maintains the desired shape.
- The formed part is trimmed to eliminate edges and fabricated into the final configuration.
- The TF100 System measures the temperature distribution of
the heated sheet just as it leaves the oven.
Originally-oriented Film Extrusion - Mount Raytek sensors at the cast roll unit for chill roll control and at the preheater and cooling units, for heating and cooling control.
Sheet Extrusion - Raytek linescanners allow operators to monitor sheet temperature and to adjust the die heater for consistent product quality.
Extrusion Coating - Monitor molten web within the narrow and often difficult to access measurement area when using Raytek sensors.
Laminating and Embossing - Use an MP50 linescanner to monitor cross-web temperatures and to help control heating adjustments.
Thermoforming - Ensure proper temperatures for laminating a multilayer product for subsequent forming. Monitor the material's temperature distribution at its proper level prior to entering the thermoformer.50 not shown). Note that the heated sheet appears rubbery and is supported by a frame transporting it to the forming section.
Large cut-ABS sheet exiting an oven MP
Noncontact Temperature
Measurement in Plastic Industries
Raytek offers a wide variety of infrared thermometers that monitor and
control temperature in plastics manufacturing processes. These thermometers
measure temperatures of fast moving processes quickly and efficiently. They
measure the temperature of the product directly, instead of the oven or the
dryer, allowing you to quickly adjust process parameters to ensure top
product quality.
Raytek's infrared thermometers are easily integrated into existing process
control systems and have the following benefits:
Non-destructive: the product is never touched or contaminated.
Fast and reliable: moving objects are measured accurately and quickly.
Flexible: temperature measurements can be made of a large area or a small
spot.
Major Applications:
Blown Film Extrusion - Maintain the plastic's tensile integrity and
thickness with accurate temperature monitoring and the ability to adjust
heating and cooling.
