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Home  > Raw materials & technologies  > Applications  > Protective & Marine coatings  > Primer improves two-coat system for wind t...

Sunday, 15 September 2019
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Raw materials & technologies, Applications, Protective & Marine coatings

Primer improves two-coat system for wind towers

Monday, 27 April 2015

Hempel has announced the launch of a new combined primer and mid-coat designed specifically for wind towers.

Developed for wind towers, the primer will replace the combined primer and mid-coat currently used in Hempel’s two-coat system. Source: Pindyurin Vasily/Fotolia
Developed for wind towers, the primer will replace the combined primer and mid-coat currently used in Hempel’s two-coat system. Source: Pindyurin V...

The new coating, "Hempadur 4774D”, will be used in the company’s well-known two-coat anti-corrosive system for wind turbine towers. It dries up to 30% faster than equivalent three-coat systems, helping to eliminate production bottlenecks, increase throughput and reduce drying hall costs. The two-coat system also means lower VOC emissions and less paint and waste, which contributes to reducing the overall cost of wind tower production.

Released in April 2015

Developed specifically for wind towers, the primer will replace the combined primer and mid-coat currently used in Hempel’s two-coat system and will improve the system by addressing previous UV stability issues.

Unlike the exterior, a wind tower interior usually only requires one or two coats with a primer/mid-coat. The interior is often exposed to UV rays while awaiting erection. The primer has been designed to maintain its white colour in these conditions.  The primer was released in April 2015 and is available worldwide.

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