Technologies for high-vacuum thin-film coating applications
Deposition of layers to improve a material Bühler Leybold Optics is one of the leading system manufacturers of high-vacuum thin-film deposition technology, whereby thin-film coating functionality is added to a substrate. This can be a moisture barrier in the case of a packaging foil, a reflective layer for a car light reflector, an anti-reflection layer, a complex filter stack for optical components, highly reflective enhanced and protected layers for astronomical mirrors, or a heat insulation layer stack for architectural glazing applications. Thin films have thicknesses ranging from nanometers to micrometers and they can be a single layer or layer stacks of several hundred layers, as can be the case with optical filters. Physical vapor deposition (PVD) with thermal or electron-beam evaporation as well as sputtering uses a rigid deposition material source. However, where our systems use chemical vapor deposition (CVD), gases or liquid material sources are used.We offer the complete spectrum of vacuum thin-film deposition technologies, from evaporation, sputtering, plasma-enhanced chemical vapor deposition (PECVD) and enhancements of the technologies such as plasma-assisted reactive magnetron sputtering (PARMS). For mass production systems several in-situ process control systems are available. Our systems can coat tiny substrates of a few millimeters to extremely large glass panes of more the 20 m² for use in architecture. The substrates can be rigid or flexible as in food packaging or electronic capacitor manufacturing.
The Bühler Leybold Optics AluMet 1800V is a highly economic, high-throughput, batch-type thermal evaporation machine for thin-film vacuum-coating of three-dimensional parts. Its double-door “clam-shell” configuration allows highly productive processing with each door holding six planetary pylons to carry the substrates. Each single pylon has a load capacity of up to 35 kg, is effectively 1500 mm long and has a usable diameter of 540 mm. The double-door design enables extremely efficient operation, as each door can be easily loaded and unloaded independently while the other is still processing. High productivity from a generous load capacity and short cycle times
The intuitive state-of-the-art human-machine interface (HMI) of the AluMet 1800V and its fully automated process control consistently guarantee high throughput with perfect results. Highly efficient processing is further aided by the double-door design with a set of six pylons per door. Offering a coating area of up to 15 m² per batch the AluMet 1800V delivers tremendous productivity. The powerful vacuum pumping system, the highly efficient thermal evaporators and high-rate plasma-enhanced chemical vapor deposition (PECVD) sources are the key to short cycle times. For example, the AluMet 1800V can deposit a highly reflective aluminum layer, plus protective top coat, onto a typical car-lamp reflector in approximately 20 min-.
The Bühler Leybold Optics Atalanta is a very cost-effective and fast batch-type evaporation machine for the vacuum coating of hydrophobic layers onto three-dimensional parts. With a resulting water contact angle of approximately 115° after coating and 105° to 110° after abrasion testing, the deposited anti-fingerprint layers perfectly fulfill and even surpass the requirements of the display and mobile device industry.The substrates to be coated are loaded onto two easily accessible rotating substrate holders mounted on each of the machines two doors. Both of the holders have an effective length of 1500 mm and a usable diameter of 540 mm, which results in a coating area of up to 5 m² per batch.
High productivity thanks to a flexible double-door design The double-door design of the Atalanta offers clear advantages for high productivity and flexibility in large-scale production. One doors pylons can be loaded or unloaded, while the pylons on the second door are being processed. This helps to minimize the times between batches while also offering considerable flexibility in respect of your up- and downstream production. For instance this design allows the deposition of a SiOx base coat by plasma-enhanced chemical vapor deposition (PECVD) plus an anti-fingerprint layer by thermal evaporation onto a typical mobile device display in approximately 8 min
Company Every day, billions of people use Bühler technologies and solutions to satisfy their basic needs for food, mobility, or communication.
Competences The company holds globally leading market positions in technologies and methods for processing grain into flour and feed, as well as for the production of pasta and chocolate, in die casting, wet grinding and surface coating. The company's core technologies are in the areas of mechanical and thermal process engineering.