How are products marked?
A couple common marks on products or semi-finished products are laser engravings on steel, notches in bladder forms and brands on wood. This involves solid or somewhat tangible products which can be easily provided with a mark. Also the marks are all visible with the bare eye.
How does this principle work for less tangible products, semi-finished products and in especially raw materials such as liquids or plastic granulate? This works via tagging.
Liquid batches of at scale produced products such as lacquer and glue can be provided with so called tag-markings. The same applies for batches which are later transformed into another end product such as plastics, glass and stone.
The substances for markings consist of microscopic little particles which are added to the mixture. The added quantity is of such small size (~0,3 – 3,0%) that it does not affect the original composition, but still sufficient to be detected.
Once added to the composition the batch is ready for detection by using special sensors such as the SPECTRO-3.... or the SPECTRO-1... These sensors make use of a certain wave length of UV-light in combination with a visual and visible light source (LED). When this light illuminates the material the particles in the batch will be lit up and they will be detectable.
Why marking the production?
Sustainable The circulation of the production batch can be determined as production from raw material up to the end product. This offers possibilities for data-driven production. Resources are used more efficient for production.
Invisible the application of conventional markings are visually visible and can influence the aesthetics in a negative way. These chemical marking is discrete and also not affecting the product.
Monitoring – It offers the possibility to monitor the quality of the production batches. When examining the production batches and retrieving information from it such as when it is produced this is easier to correctly identify.
Wear resistent Mechanical or thermal markings such as brands are exposed to environmental conditions and can wear away with time. A chemical tag does not have this and is thus wear-resistent.
Sensors to read markings
Special colour sensors are used to lit up and detect markings in products. the sensor is housed with a combination of an UV-light source and a visual visible light source. In the overview below we offer sensor which could help.