Inspection for foil stamping with
VISION EXPERT 4000
Foil finishing is used for the particularly discerning design of special packaging, such as cosmetics, luxury goods and cigarette packaging. Embossing film lends the product very discrete visual characteristics, an appealing appearance and a very particular signalling effect. Printing and stamping flaws, colour deviations and surface imperfections can devalue the overall product.
The high level of premium product refinement sometimes makes the quality monitoring process very complex. In the past, manufacturers usually carried out random sample inspections – these however are not able to guarantee systematic 100% monitoring of products. Added to this is an often high overhead for manual sorting work.
Cigarette packaging is commonly finished with hot stamping. Due to the fact that the stamping process depends on several parameters reacting sensitively, such as temperature, contact pressure, speed, material properties and matrix form, deficient results may arise – such as incomplete foil transfer, passer discrepancies to the print image and even missing film as a result of rolls ending.
The VISION EXPERT 4000 inspection system can be integrated directly into the hot stamping printing machine. Every sheet and every repeat pattern is checked for accuracy at full printing speed. The inspection is performed by accurately comparing a “good” sheet to the current production. Printing flaws are identified immediately and reported to the machine operator so that the cause of the problem can be remedied immediately. A printing material inspection in grey scales is performed at the same time as the inspection of the hot stamping foil.
Performance details:
The VISION EXPERTS 4000 can be used for sheets with rotative coating and for reel material. The maximum inspection width is 105 cm. The highest inspection speed is 12,000 sheets/h or 150 metres/min. Even very minor foil stamping discrepancies can be identified reliably at an image resolution of 0.15mm. Flaw detection is controlled by specifying simple attributes – flaw size, frequency and location can be set independently of each other and can be aligned to customer requirements.
Foil-finished products are expensive and must satisfy particularly high aesthetic demands.
Your benefits:
- High levels of material savings are attained because flaws are identified the moment they occur and the cause of the problem can be remedied
- Sorting costs sink because expensive manual re-sorting is no longer necessary
- A smooth production cycle is the result, where products free of flaws can be produced immediately and where there can be no process disruption as a result of subsequent inspections or reproduction of defective batches
- Customer satisfaction rises in the long-term when no complaints are made due to the high level of quality.
