The importance of infrared temperature measurement in the plastics industry


Infrared temperature measurement is a key tool in the plastics industry, as it enables accurate and non‑contact temperature monitoring during production processes. It is used especially during molding, extrusion, and cooling, where temperature control is essential for ensuring quality and consistency.
IR technology helps prevent defects, reduce material waste, and improve energy efficiency. Real‑time measurement enables quick reactions to process changes, enhancing production efficiency and sustainability. Overall, IR measurement supports quality control and has become an essential part of modern plastic manufacturing.

Application Example: IR Measurement in a High‑Speed Production Line
In an injection stretch blow molding process, Optris infrared pyrometers CTfast and CT 4M play a crucial role in precise temperature control.
These Optris sensors are installed to monitor the temperature of plastic bottle preforms as they are heated before entering the mold. CTfast offers an extremely fast response time of only 6 milliseconds, which is essential for high‑speed production lines.
Its temperature range spans from 50 °C to 975 °C, allowing it to detect even the smallest temperature deviations and ensuring consistent bottle quality.
Optris pyrometers deliver real‑time data that can be integrated directly into the machine control system via Modbus TCP or Ethernet IP interfaces, for example.
This allows automatic adjustments to the heating process whenever the temperature deviates from the optimal range.
The fast measurement capability and high reliability maximize production efficiency while maintaining the quality of the manufactured plastic bottles.
Explore More Application Examples:
- Metal Industry
- Glass Industry
- Maintenance
- Fire Prevention
Explore all our temperature measurement solutions for industrial needs!