Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New MAX Infrared Oven is Five Times Faster For Glass Tempering

08.07.2016

Fast Homogenous Heating Saves Time and Valuable Space

Packaging glass for medications or tablets must be tempered after it is heat-formed, otherwise thermal stresses can lead to glass bottles or ampoules cracking or shattering. The new MAX infrared oven carries out this stress-relieving process in a very homogenous IR radiation field within minutes in contrast to conventional heating processes.


Polarity meter shows residual stresses below cannula and a stress-free cannula in the top

Copyright Heraeus Noblelight 2016


Tempering with the MAX Infrared Oven saves time and space

Copyright Heraeus Noblelight 2016

As opposed to conventional ovens, the IR method saves significant time and space. For example, the oven needs to be only two meters long for continuous, production line type operations and eliminates the need for long heat-up and cool-down periods associated with ovens providing batch operation. Compared with conventional electric heating methods, glass-heating with a MAX is five times faster and cuts energy consumption by 90%.

Heraeus is showing innovative solutions, from UV to infrared, at the Glasstec exhibition (hall 12, booth 12/A 37) in Dusseldorf in September.

Medication, tablets and pills are packaged in small glass bottles or ampoules. These need to be safe and clean but the special shape of this glass packaging makes its manufacture something of a challenge. The glass is formed under heat, which means there are residual thermal stresses. Before they are put into use, these thermal stresses must be removed, otherwise there is a danger that the glass will crack.

Stress relief is achieved by tempering. This involves a controlled heating to around 600°C, depending on the type of glass, followed by a slow cool-down. Various technologies can be used for this heating process, including induction ovens and conventional fireclay-clad ovens for batch operation and convection- or standard infrared ovens for high volume continuous operations. A new development is the MAX infrared oven, which offers significant user benefits.

The MAX Infrared Oven – Precisely tailored to meet customer needs

Tempering packaging glass with warm air takes up valuable time and space. As warm air transfers only a limited amount of heat, warm air, or convection, ovens need to be quite long for continuous operations.
Batch ovens must be heated up for a long time and then allowed to cool until it is safe to remove the tempered glass.

The new MAX infrared oven from Heraeus Noblelight is superior to both techniques, as, because of its design, it transfers the energy required in a very short time. With its unique combination of radiation, convection and reflection, heating is especially fast.

In contrast to the fireclay-lined oven, both the process chamber and the feeder system of the new MAX oven are made of pure quartz material. On one hand, this is extremely resistant to thermal shock and on the other hand it minimizes the possibility of the glass containing unwanted particle impurities.

In cannulas or glass bottles the base is relatively thick and the walls comparatively thin. Consequently, base and walls are heated at different rates. The QRC material used in the MAX oven is made up of quartz glass with a micro- and nano structure so that the infrared radiation is diffused to provide a particularly homogenous heating effect.

Tempering within a few minutes

In order to temper the glass products, they are passed into the MAX oven, heated to 600°C and held for a short time at this temperature. They are then removed from the oven and cooled in a controlled manner. Tests in the Heraeus Applications Centre in Kleinostheim have established that when glass is heated at a rate of 50 degrees C temperature rise per second then the complete tempering process, including cool-down and dependent of sample geometry, can be completed in around five minutes. By using a polarity meter, it was then shown that the stresses in the glass could be successfully removed.

The test oven had a power of 15kW, so that the temperature was held constant at the 600°C necessary for the glass tempering. Juergen Weber, development manager at Heraeus, points out another benefit, “Our calculations also showed that with this oven it is potentially possible to temper around 1000 glass products, at just 15 kW, within one hour!”

MAX Infrared Ovens Save Energy

All MAX infrared ovens share the same compact construction with specially-developed IR mirrors in the process chamber. Energy is then utilized more efficiently because the infrared radiation is reflected in an optimal fashion within the oven. In addition, the natural convection has an extra heating effect.
All tests with customers’ own material in the Applications Centre have delivered compelling evidence that, compared with conventional electrical heating methods, the MAX oven is five times faster and, at the same time, uses only one-fifteenth of the energy (over 90% less).

Consequently, the tempering process time can be reduced. This greatly increases the energy efficiency and lowers the operating costs. MAX infrared ovens also allow system solutions as computer simulation in the design phase help to create the most efficient heating process.

MAX ovens can be located in a modular fashion in series and individually controlled, to allow for rapid product change-over. The compact ovens are also easily connected with feeder systems, and if necessary, these can be of quartz glass.

Heraeus, the technology group headquartered in Hanau, Germany, is a leading international family-owned company formed in 1851. With expertise, a focus on innovations, operational excellence and an entrepreneurial leadership, we strive to continuously improve our business performance. We create high-quality solutions for our clients and strengthen their competitiveness in the long term by combining material expertise with technological know-how. Our ideas are focused on themes such as the environment, energy, health, mobility and industrial applications.

Our portfolio ranges from components to coordinated material systems which are used in a wide variety of industries, including the steel, electronics, chemical, automotive and telecommunications industries. In the 2015 financial year, Heraeus generated revenues without precious metals of €1.9 bn and a total revenue including precious metal of €12.9 bn . With approximately 12,500 employees worldwide in more than 100 subsidiaries in 38 countries, Heraeus holds a leading position in its global markets.

Heraeus Noblelight GmbH with its headquarters in Hanau and with subsidiaries in the USA, Great Britain, France, China and Australia, is one of the technology- and market-leaders in the production of specialty light sources and systems. In 2015, Heraeus Noblelight had an annual turnover of 158.3 Million € and employed 828 people worldwide.

The organization develops, manufactures and markets infrared and ultraviolet emitters, systems and solutions for applications in industrial manufacture, environmental protection, medicine and cosmetics, research, development and analytical measurement techniques.

For further information, please contact:

Technical: Heraeus Noblelight GmbH
Reinhard-Heraeus-Ring 7
D-63801 Kleinostheim
Tel +49 6181/35-8545, Fax +49 6181/35-16 8545
E-Mail hng-infrared@heraeus.com

Press: Dr. Marie-Luise Bopp
Heraeus Noblelight GmbH,
Marketing
Tel +49 6181/35-8547, Fax +49 6181/35-16 8547
E-Mail marie-luise.bopp@heraeus.com
www.heraeus-noblelight.com

Dr. Marie-Luise Bopp | Heraeus Noblelight GmbH

More articles from Trade Fair News:

nachricht Solar Collectors from Ultra-High Performance Concrete Combine Energy Efficiency and Aesthetics
16.01.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

nachricht Energy-Efficient Building Operation: Monitoring Platform MONDAS Identifies Energy-Saving Potential
16.01.2017 | Fraunhofer-Institut für Solare Energiesysteme ISE

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

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

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

Im Focus: Newly proposed reference datasets improve weather satellite data quality

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...

Im Focus: Repairing defects in fiber-reinforced plastics more efficiently

Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.

Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Multiregional brain on a chip

16.01.2017 | Power and Electrical Engineering

New technology enables 5-D imaging in live animals, humans

16.01.2017 | Information Technology

Researchers develop environmentally friendly soy air filter

16.01.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>