Conventionally, these lacquers and coatings are dried or cured by means of hot air. Increasingly, the market requires faster production speeds, which, in many cases, can be achieved by means of infrared drying. A British manufacturer of key boards and keypads is drying its protective lacquer coatings in less than four minutes using infrared, compared with the previous 20minutes required by a hot air oven.
Medium wave infrared emitters from Heraeus Noblelight dry keypads much faster than a hot air oven. This increases quality and saves energy. Copyright Heraeus Noblelight 2007
Heraeus Noblelight will be showing emitters for lacquer drying on stand 3541, Hall 3, at PaintExpo in Karlsruhe.
Kestrel Injection Moulders in Great Britain produces keyboards and keypads for cars or for use in electronic equipment, computers or white goods. These pads are injection moulded plastic products and need to be printed and coated with a protective clear lacquer. Previously, the components had to be dried for around 20 minutes in a hot air oven. During this extended period, dust could settle on the product to adversely affect the quality.
An infrared oven from Heraeus Noblelight is now drying and curing the coatings on the keypads in less than 20% of the time required by the convection ovens.
With its 1.5m length and 1m height, the infrared oven fitted easily into the available space. It consists of two modules, each of 3 kW output and is fitted with medium wave infrared emitters, which in pre-installation trials had proved themselves as a successful and faster alternative to hot air.
Currently, the new ovens handle two different types of keypads. One type is coated with a water-based lacquer after manufacture, is pre-dried, printed and then finished with a clear protective lacquer. Other keypads do not require a pre-coating and can be immediately printed and coated with the protective lacquer.
Since the installation of the infrared ovens, the rejection rates have been significantly reduced. Naturally, this enormously reduces the time in which dust can fall on the keypad surfaces. In addition, the infrared system has also proved itself to be extremely energy-saving, as, in contrast to the convection ovens, it needs to be switched on only when heating is required.Heraeus Noblelight offers a comprehensive range of infrared emitters to heat plastics, lacquers or coatings rapidly and efficiently. Infrared ovens are so compact that they can be easily retrofitted into existing production systems and layouts. This saves space, time and cost.
Heraeus Noblelight GmbH with its headquarters in Hanau and with subsidiaries in the USA, Great Britain, France, China, Australia and Puerto Rico, is one of the technology- and market-leaders in the production of specialist light sources. In 2006, Heraeus Noblelight had an annual turnover of 88 Million € and employed 651 people worldwide. The organisation develops, manufactures and markets infrared and ultraviolet emitters for applications in industrial manufacture, environmental protection, medicine and cosmetics, research, development and analytical laboratories.
Heraeus, the precious metals and technology group headquartered in Hanau, Germany, is a global, private company in the business segments of precious metals, sensors, dental and medical products, quartz glass and specialty lighting sources. With revenues of more than EUR 10 billion and more than 11,000 employees in over 100 companies, Heraeus has stood out for more than 155 years as one of the world’s leading companies involved in precious metals and materials technology.
Dr. Marie-Luise Bopp | Heraeus Noblelight GmbH
First implementation of Gecomer®-Technology in a Collaborative Robot
21.03.2019 | INM - Leibniz-Institut für Neue Materialien gGmbH
Novel sensor system improves reliability of high-temperature humidity measurements
20.03.2019 | Universität des Saarlandes
DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
The nonlinear process of high-order harmonic generation (HHG) in gases is one of the cornerstones of attosecond science (an attosecond is a billionth of a...
Nano- and microtechnology are promising candidates not only for medical applications such as drug delivery but also for the creation of little robots or flexible integrated sensors. Scientists from the Max Planck Institute for Polymer Research (MPI-P) have created magnetic microparticles, with a newly developed method, that could pave the way for building micro-motors or guiding drugs in the human body to a target, like a tumor. The preparation of such structures as well as their remote-control can be regulated using magnetic fields and therefore can find application in an array of domains.
The magnetic properties of a material control how this material responds to the presence of a magnetic field. Iron oxide is the main component of rust but also...
Due to the special arrangement of its molecules, a new coating made of corn starch is able to repair small scratches by itself through heat: The cross-linking via ring-shaped molecules makes the material mobile, so that it compensates for the scratches and these disappear again.
Superficial micro-scratches on the car body or on other high-gloss surfaces are harmless, but annoying. Especially in the luxury segment such surfaces are...
The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
11.03.2019 | Event News
01.03.2019 | Event News
28.02.2019 | Event News
22.03.2019 | Life Sciences
22.03.2019 | Life Sciences
22.03.2019 | Information Technology