In Europe, all welding curtains, strips and other products for the protection of welding areas using transparent materials, must meet the European standard: EN ISO 25980 (formerly EN-1598). This standard was last revised in 2015.
The EN ISO 25980 standard determines compliance in the area of:
Filtration of harmful ultraviolet (UV) rays and barely visible blue light:
elimination of UV rays between 210 en 313 nm
almost entirely filter UV rays between 313 and 400 nm
filter out blue light on a gradual scale (between 400 and 600 nm)
restricted filtration of visible light (600 to 1400 nm).
Welding light projected onto a welding curtain can be reflected to a maximum of 10 per cent. This prevents the welder from being exposed to the dangers of UV rays reflected via the welding curtain.
Materials can discolour due to exposure to UV radiation, such as in the case of sunlight. The discolouration of a welding curtain directly influences its filtering properties. The EN ISO 25980 stipulates the minimum requirements for protection. A CEPRO approved product provides long-term filtration properties.
Should a welding curtain catch fire it will self-extinguish once the material has been removed from the heat source. During a test method a piece of curtain 190 x 90mm is exposed to a flame for 15 seconds. If the curtain catches fire, it should self-extinguish within 3 seconds and the flame should not exceed a height of 150mm.
On CEPRO’s initiative, standards have also been set for the mechanical strength of welding curtains. Under the stipulated conditions, the suspension eyelets and seams are strong enough to withstand a weight of 7 kilos.
An approved curtain must indicate the followin
Name and registration number of the manufacturer (in our case that of CEPRO)
EN ISO 25980 (EN 1598) marking
Month and year of production