Device for curing coatings or plastic liners on internal wall of elongated hollow spaces
AssigneeHeraeus Noblelight GmbH
InventorThomas Arnold
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Abstract
A known device for curing of coatings or plastic liners on the internal wall of elongated hollow spaces includes a UV lamp having a bulb for emission of optical radiation. Based on this known device, it is proposed to provide a device for the curing of coatings or plastic liners on the internal wall of elongated hollow spaces that has a long service life and has a reduced attendant risk of damage to health and materials. The proposed device has an optical filter element to reduce the emission of an ultraviolet fraction of the optical radiation. The optical filter element has a spectral transmission of at least 80% cm−1in a wavelength range of 400 nm to 450 nm, and has an edge wavelength in the range of 350 nm to 380 nm.
Claims11
-10. (canceled)
A device for curing of coatings or plastic liners on an internal wall of elongated hollow spaces, the device comprising a UV lamp having a bulb for emission of optical radiation, wherein the bulb contains a gallium-containing filling gas, and an optical filter element to reduce emission of an ultraviolet fraction of the optical radiation, wherein the optical filter element has a spectral transmission of at least 80% cm−1 in a wavelength range of 400 nm to 450 nm and has an edge wavelength in a range of 350 nm to 380 nm.
Dependencies are inferred from the claim text.