Products

• Universal free radical LED and conventional UV (Hg-, Fe-doped) curing high gloss 2-component screen printing ink for the printing of glass, metal and ceramics

• Substrates may differ in their surface properties or method of manufacture. Therefore, a suitability test must always be carried out before printing

• Antistatic, mould release agents and slip additives may have negative effects on adhesion, and should be detected and removed prior to printing

Characteristics

• Universal free radical LED and conventional UV (Hg-, Fe-doped) curing high gloss 2-component screen printing ink for the printing of glass, metal and ceramics

• The 937LED ink series is suitable for multi-colour inline printing and excels at their resistance against chemical and cosmetic agents as well as typical beverage industry liquids

• Optimal adhesion and scratch resistance can be achieved within a shorter time compared to conventional UV curing ink series. Water and dishwasher resistance and ice water or frost resistance (up to -20°C) will be achieved only after approximately 72 hours (storage at room temperature)

• If the storage temperature is less then 21 °C, the post curing effect will be reduced and the time to achieve the final properties and resistances is prolonged. A special product suitability test is recommended prior to production

• RUCO series 937LED inks are suitable for the overall screen printing industries. The printing speed goes for 800-1600 pcs per hour

• Many glass containers are cold end coated (CEC) in order to improve the scratch resistance and obtain a transport protection. Therefore, to achieve good ink adhesion onto glass, a flame, Pyrosil or UVITRO pretreatment of the glass surface is necessary. In dependence of different hot and cold end coatings a special product suitability test is recommended prior to production

• Based to the high reactivity please avoid direct daylight

• The inks of series 937LED are formulated for LED bulbs (irradiance: minimum 8W/cm²) of wavelength of 395 nm. Alternatively, you can use conventional UV curing bulbs (Hg- or Fe-doped with a lamp power of 160 – 200 W/cm, UV dose 200mJ/cm²). Series 937LED shows good curing properties and is suitable for more than 100 cycles/min. depending on the colour shade, UV bulb configuration, mesh count and transferred film weight

• Please note that low radiation intensity, excessive machine speeds or excessive film thickness can have a negative influence on the curing properties and adhesion

• The damage to the UV curing bulb or the size and shape of the refracting glass will likely affect the curing process and adhesion of the series of 937UV inks

• Uncured prints are considered hazardous waste. Therefore, it is recommended to cure misprints under the UV bulb. After curing, waste can be disposed of by conventional methods