Primarc electrodeless bulbs are designed and manufactured as direct replacement lamps or to meet the specific needs of original equipment manufacturers worldwide
In addition to the extensive range of electrode arc lamps, the Primarc name is on its in-house developed electrodeless microwave bulb, for use in industries such as fibre optic coating, electronics, compact disc and DVD manufacture, plastic container decorating, liquid finishing, two piece can manufacture, graphic arts and general industrial applications.
The standard bulb has a mercury/gas fill, however, as with Primarc electrode lamps the spectral distribution can be modified by the addition of special metal halides.
Metal halide lamps are mercury vapour lamps with metal halide additives which create specific wavelengths of ultraviolet radiation to precision- match the photo-initiator being cured. The addition of metal halides creates a shift in the spectral output of a standard lamp, producing longer wavelengths. These longer wavelengths enable a greater depth of cure to be achieved, making them particularly useful in the curing of pigmented and thicker coatings.
Primarc electrodeless microwave bulbs are manufactured from high-clarity, vitreous silica, normally referred to as quartz. Quartz has the property of high-transparency to ultraviolet light, particularly at the shortwave end of the spectrum where over 90% of the UV energy generated is transmitted through the quartz.
The Primarc Quality Standard ensures that each lamp is not only manufactured to the most stringent of specifications, but also lamp performance is consistent each time, every time.
Spectral distribution can be modified by the addition of certain Metal Halides as detailed below.