Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Quick and flexible Structuring of Glass Surfaces

18.11.2011
Industry can now use a new laser process for structuring large surface areas of float glass. This technology was developed by the Laser Zentrum Hannover e.V. (LZH) and Cerion GmbH and is characterized by high quality, short processing time and flexibility in design.
The first successful use of this new process can be seen in Norderstedt, near Hamburg, Germany. Nearly 300 m² of the insulated glass façade of a new building were structured on both sides using laser technology. Each glass panel measures 2.8 m by 0.8 m, and weighs approximately 150 kg.

Complex surface decors or large area surface structuring on architectural glass are usually time-consuming and often require processes that are health endangering. For example, wet chemical etching uses hydrofluoric acid, which is highly poisonous. Sandblasting, depending on the degree of frosting or matting required, is time consuming, as several process steps are necessary. For both processes, chemical or sandblasting, the one-use masking is necessary, and a final cleaning step is also needed.

In a joint research project, LZH and Cerion have developed an industrial glass processing with a more economical and much more flexible method. A CO2 laser using infrared laser radiation (10.6 µm wavelength) is used to structure the glass. The focused beam can achieve high local intensities. and vaporizes the material on the glass surface, pinpoint for pinpoint, thus creating periodic microstructures.

At the LZH, scientists in the “Glass Group” (Technologies for Non-metals Department) adapted a technology used for metal processing to fit the needs of glass production. Any shape or form can be transferred to the glass surface using scanner technology for guiding laser beam. This makes it possible to structure glass surfaces at an extremely high speed, since only a small change in the scanner mirror angle is necessary to cover a large distance. Large surfaces can be processed at up to 5.4 square meters per hour with resolutions of 150 dpi. The frosting or matting level can be adjusted in process from transparent to opaque.

Testing of the mechanical characteristics of the lasered glass, such as bending and impulse stability was also part of the process development, especially concerning the requirements placed on static glass components in buildings. Cerion GmbH in Minden, Germany, built a prototype based on the detailed parameter studies carried out by the LZH, and this prototype was used to optimize the process for industrial use. Patents for the system technology have been applied for, and the Cerion GmbH is offering this technology to their international clients under the trademark name of CERILAS. The process is being continually improved and optimized for other application areas, for example non-slip glass surfaces, a process that has already been patented by Cerion.

Laser structuring is highly flexible for both conventional window glass or for thermally pre-stressed float glass, including single-pane safety glass. Safety glass is used for many architectural applications, both inside and out, for example glass façades, glass doors or room partitions, or for designer furniture.

The project „Development of laser-based structuring process for glass surfaces“ has received financial support from the German Federal Ministry of Economics and Technology (BMWi) through the German Federation of Industrial Research Associations "Otto von Guericke" e.V., within the framework of the supportive measure “Central Innovation Program for Medium-Sized Businesses” (ZIM).

Laser technology was used to structure glass for a building façade near Hamburg, Germany. Photo source: Cerion GmbH

Contact:
Business Development & Communications Department
Communications Group
Michael Botts
Public Relations
Tel.: +49 511 2788-151
Fax: +49 511 2788-100
E-Mail: m.botts@lzh.de
The Laser Zentrum Hannover e.V. (LZH) carries out research and development in the field of laser technology and is supported by the Ministry of Economic Affairs, Labour and Transport of the State of Lower Saxony (Niedersächsisches Ministerium für Wirtschaft, Arbeit und Verkehr).

Michael Botts | Laser Zentrum Hannover e.V.
Further information:
http://www.lzh.de/en/publication/pressreleases/2011/quickandflexiblestructuringofglasssurfaces

More articles from Process Engineering:

nachricht Dresdner scientists print tomorrow’s world
08.02.2017 | Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS

nachricht New technology for mass-production of complex molded composite components
23.01.2017 | Evonik Industries AG

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>