Instanz: TeilenTeilen:Early Detection of the Smallest DefectsBritta Widmann KommunikationFraunhofer-Gesellschaft03.08.2026 10:09Every year, billions of products are sealed in film packaging. Optical coherence tomography (OCT) can be used to non-destructively detect defects in seals in real time during the packaging process, with a resolution in the micrometer range. “Mono-material films are very attractive from an environmental perspective, but they are unfortunately more prone to seal defects,” says Schallert. In addition to detecting actual defects, the system also provides information on the condition of the machinery and tooling. “OCT can play an important role wherever thin layers, internal structures or the smallest defects have to be reliably detected.