Temperature monitoring in the processing of plastics
The plastics industry poses a challenge for the non-contact temperature measurement. Throughout the respective stages of the manufacturing process, for example in injection moulding processes or thermoforming, several different temperature ranges have to be monitored and analysed in order to ensure a high quality level of the plastics product. To meet these expectations, Optris has developed specific infrared measuring devices for the themperature surveillance in the processing of plastics.
The following articles and our brochure Non-contact temperature measurement in the plastics industry (NEW) will introduce you to several application examples, in which optris thermometers and infrared cameras are successfully applied. Should your application be missing, please use our pyrometer selector to find the proper device for your needs or contact our application engineers.
Thermoforming of Film
To avoid local burning and crack formation, an even temperature of the material is of importance during thermoforming processes. Thermal imagers are used to retract the temperature regime of equipment. Punctual measuring pyrometers take care of the temperature control during production by monitoring defined measurement points.
Application note: Temperature monitoring in the plastics industry
Temperature measurement at thermoforming process of thermoplastics
New manufacturing techniques and combinations of materials are being developed all the time, particularly for demanding application areas such as automotive engineering. Continuous fiber-reinforced thermoplastics, which are extremely strong but very lightweight at the same time, are a typical example of this kind of innovation. Ensuring the quality and the proper production process there has to ba a reliable and precise temperature measurement.
Recommended device: Infrared thermometer optris CT LT
Further information you find in the Application Note "Using pyrometers to make high quality parts - temperature controlled with pinpoint accuracy"
Temperature measurement at the thermoforming process of automotive exterior parts
The Gubesch Group optimises the production of automotive exterior parts with the application of the infrared camera of the optris PI Series. Consistent temperature profiles during the thermoforming process ensure high quality and increase customer loyalty.
Recommended devics: Infrared camera
Further information can be found in the application note Infrared cameras reduce scrap in the thermoforming process
To avoid a distortion of building elements during injection moulding processes, the process can be monitored by thermal imagers. By measuring the molded parts when opening the mold, temperature overstepping or undershoot (hot spots, cold spots) can be detected and the molding temperature can be adjusted on time.
Recommended device: Infrared camera optris PI
For further information see the application note "The thermal finger print - Injection molding in the focus of industry 4.0"
PET Bottle Production
The injection blow process is very common for the production of PET bottles. A PET preform (injection molded part) will be heated and pressed into a form by compressed air. To control the preform temperature at different spots, fast punctual measuring pyrometers (response time 6 ms) or the fast thermal imager (frequency 100 Hz) are recommended.