Workable Specification For Hard Coatings
The panel should be viewed from the front face under daylight conditions, with normal non-directional lighting. Viewing should take 15 seconds and from a distance of 450 mm.
|SIZE||CRITERIA (Window Area)||CRITERIA (Non Window Area)|
|0.15 - 0.3 mm||5 per 100 x 100 mm||5 per 100 x 100 mm|
|0.3 - 0.5 mm||1 per panel||2 per panel|
|0.5 - 0.75||0 per panel||1 per panel|
|Small Fibre||1 per panel||3 per panel|
Where polycarbonate panels are used, fine scratching will be inevitable on the rear surface. These marks can be caused by wiping with the softest of cloths, and even though they are extremely fine, they can look obvious when illuminated.
For panels larger than 100 mm square, only one scratch allowed on the front face if less than 10 mm long.
Please be assured that we will attempt to produce the best quality panels that we can from hard coated material. This specification is an indication of worst case conditions, allowing for our suppliers current quality.