Hawes Signs offers design, manufacture, installation and maintenance of a comprehensive range of external and internal signs for customers ranging from high street banks to car dealerships and supermarket chains. The company’s advanced manufacturing facilities include the latest in digital printing, vinyl cutting and flexible machine tool technology, so that it is ideally suited to handle large volume roll-out programmes as well having the capability to meet lower volume customised requirements.
Powder coatings can be quickly and reliably heated to the required temperatures by medium wave, electric infrared. Copyright Heraeus Noblelight 2007
Naturally, finishing operations are vital to the production of high quality signage and environmentally-friendly powder coating is used to provide a sign surface which offers high gloss-retention and is highly resistant to chipping, scratching, fading and weatherability. The powder-coating facility at Hawes Signs uses epoxy/polyester/pigment powders which are sprayed directly onto predominantly steel and aluminium panels, of various sizes. This powder must then be brought to a temperature which allows it to flow and fuse before being cured for a given time.
Previously, the sprayed-on powder had been pre-heated by a gas-fired infrared system before entering a warm air convection oven for final curing. However, this oven was starting to cause maintenance problems and to eliminate unwanted line stoppages while, at the same time increasing line speeds, it was decided to investigate alternative powder pre-heating methods.
Extensive tests were carried out at Heraeus’ Neston Applications Centre and these showed that the powder coatings could be quickly and reliably heated to the required temperatures by medium wave, electric infrared. As a result, a purpose-built medium wave, infrared oven was conveniently retrofitted into the existing powder coating and curing line, between the coating cabin and the warm air oven. This consists of two parallel zones, a 50kW zone which heats the coated side of the panels and a 35kW zone which heats the rear, uncoated side of the panels to accelerate the heating effect. Each of the zones can themselves be switched between two power outputs to accommodate two sizes of panel.
Since installation, the oven has helped to speed up the powder coating process as it heats the powder faster than the old system and it has also reduced the cure dwell time in the convection oven. In addition, quality has improved, as the medium wave heaters provide a uniform flow and fusion of the powders.
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.
Hawes Signs is part of ECCE International, a unique global signage company owned equally by Hawes (UK), Kubald (Germany) and Rousseau (France).
New technology for ultra-smooth polymer films
28.06.2018 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
Diamond watch components
18.06.2018 | Schweizerischer Nationalfonds SNF
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
19.07.2018 | Earth Sciences
19.07.2018 | Power and Electrical Engineering
19.07.2018 | Materials Sciences