Workable Specification For Cast Filters
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||1 per 100 x 100 mm||2 per 100 x 100 mm|
|0.3 - 0.5 mm||0 per panel||1 per panel|
|0.5 - 0.75||0 per panel||0 per panel|
Small fibres in cast allyl carbonate are not like the surface fibres in coated material. In coatings the fibre creates an inclusion on the surface which is highly visible. With the cast product fibres are very fine and are trapped within the material. These are difficult to see and do not produce a surface defect. These fibres are only visible when illuminated with a direct, bright light and do not effect the quality of a display.
No scratching is allowed on the panels.
Please be assured that we will attempt to produce the best quality panels that we can at all times. This specification is an indication of worst case conditions.