(openPR) - Infrared heat dries and cures lacquers and coatings reliably, as it can be precisely matched to the coating system and the product. Large mass products such as flagstones, which require a great deal of energy, are dried more quickly with infrared heat. Nano coatings, to some extent, need very high temperatures. Infrared radiation cures these coatings, without destroying their very special properties. By retro-fitting an infrared system, it is possible to increase the capacity of a drying plant, while saving valuable production space. Within the framework of the “Praxispark”, at the Hannover Fair in April, Heraeus Noblelight will be promoting the advantages of infrared heating technology and providing the opportunity for visitors to speak with application specialists on the stand.
Residual moisture is removed from screed and gravel, roof tiles are coated with plastic and flagstones are made dirt-repellent by coating them with a nano lacquer. All these processes demand an efficient heat source, as a great deal of energy is required to heat up the large mass of flagstones or concrete flags. This requirement means that hot air ovens quickly reach their limits of capability, as hot air has only a relatively small heat transfer capacity. Consequently, when a manufacturer of building materials plans an increase in capacity, he has to extend his hot air oven if he is to achieve greater flag throughput. This means extra production space, which is not always available, or it costs a great deal of money.
One solution to the problem is the conversion to infrared heat or expanding the existing drying plant by adding an infrared module. Infrared emitters transfer heat rapidly and at high power. The heat transfer capacity of infrared radiation is up to 1 Megawatt/m².
Many coating processes have requirements which cannot be solved with standard heat sources. Moreover, the coating system itself sets the drying requirements. The specialist exhibition “Praxispark” at the Hanover Fair in Hall 6, Stand C 30, will concern itself totally with application questions on the subject of surface treatment. Within the scope of this Skills Centre, Heraeus Noblelight will be demonstrating infrared technology and offers visitors the opportunity to discuss the various emitter characteristics and their applications for different coating systems with an applications specialist on the stand.
“It is important to us that we speak directly to the customer,” says Markus Betz, application specialist at Heraeus Noblelight, “as we match our infrared emitters precisely with the product and process and not the other way round!” A careful matching of the infrared emitter, in terms of wavelength, shape and power, with the properties of the product is important for a successful result. Radiation which is precisely matched with the absorption characteristics of the coating is very rapidly converted into heat, so that water or other solvents are evaporated, while the material and the local environment remain cooler and protected.
Heraeus Noblelight offers the complete range of infrared from near infrared (NIR) to medium wave Carbon technology (CIR) and has the know-how to determine, either in our in-house applications Centre or on site, which infrared emitter will dry and cure coating as quickly as possible, while taking the greatest possible care of the material.
Heraeus Noblelight GmbH, with its headquarters in Hanau and with subsidiaries in the USA, Great Britain and China, is one of the technology- and market-leaders in the production of specialist light sources. In 2005, Heraeus Noblelight had an annual turnover of 79 Million € and employed 644 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.
The precious metal and technology organisation Heraeus, is a market- and technology-leader, worldwide, in the fields of precious metals, dental materials, sensors, quartz glass and specialist light sources. With a turnover of over 9 milliard € and with more than 10,600 employees worldwide in more than 100 companies, Heraus has been acknowledged worldwide for more than 150 years as a precious metals and materials specialist.
The high innovation and development potential in the organisation is promoted and encouraged intensively and in a targeted fashion. Heraeus is consolidating its leading position in various industrial sectors by customer-focused product development and considered and targeted acquisitions.
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