Infra-red emitters provide targeted heat
A
Heraeus Noblelight product story
Edited by the Engineeringtalk editorial team
Mar 11, 2005
By installing custom-built equipment, incorporating short wave infra-red emitters, on its embossing line, Cova Products is saving energy and improving throughput by using targeted heat.
By installing custom-built equipment, incorporating short wave infra-red emitters from Heraeus Noblelight, on its embossing line, Cova Products of Cramlington is saving energy and improving throughput because of the application of targeted heat.
Cova Products manufactures wood grain laminates for application to domestic furniture such as speaker cabinets and kitchen cupboards.
Many of these PVC-based laminates are embossed with a wood grain finish and the embossing line is an important part of the production process.
The laminate is fed as a web to the embossing machine and must be preheated before embossing to achieve the required degree of surface softness.
Some time ago, Cova uprated an existing heating system on an embossing line by replacing ceramic heaters, at the sides of the line, with Heraeus short wave infra-red emitters.
However, the company has recently installed a new embossing line, supplied by specialist equipment manufacturer Kleinewefer Anlagen (KKA) of Munich, and this incorporates an all-short-wave infra-red heating section, where the emitter layout is contoured to match the path of the laminate web.
To achieve the required contour geometry, the infra-red emitters are fitted in six individual cassettes, each containing two 6.75kW emitters and twelve 125W emitters.
The cassettes themselves are so shaped that when the six modules are fitted together, the complete assembly assumes a curve which follows the web path.
This custom-built assembly allows precise targeting of the heating, so that very little energy is wasted.
The exact power concentration also ensures that the web is heated to the specified temperature quickly and efficiently, permitting faster line speeds to be achieved.
Furthermore, the extremely fast response of the short wave emitters minimises the possibility of damage to the web, as the heaters can be switched off virtually instantaneously in the event of unexpected line stoppage.
Heraeus Noblelight, part of the multinational Heraeus Group, has over 40 years experience in infra-red technology and offers the expertise, products and systems to provide efficient and effective solutions to drying, heating and curing problems throughout industry.
It is a leader in the development of targeted heating systems and can supply emitters which are precisely matched to the product to be heated in terms of geometry, emitted wavelength and power.
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