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 Comparison between lighting products |
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bioriented PVC |
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| COMPOSITION |
Polyvinyl chloride |
| DENSITY |
1,4 |
| THICKNESS |
1 mm |
| WEIGHT / m² |
1,6 kg |
| Max. WIDTH |
110 cm |
| BENDING STRENGTH |
800 daN/cm² |
| FLEXURAL MODULUS (N/m²) |
2900-3400 |
| SHOCK RESISTANCE |
10 |
| SERVICE TEMPERATURE |
-55 to +65°C |
| DILATION (, 10-6) |
68 |
| INFLAMMABILITY |
M1 non-inflammable and tasteless |
| THERMAL CONDUCTIVITY (K) w/m²,°C
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6 to 7 |
| GLOBAL LIGHT TRyearsMISSION % / Air
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90 for crystal Bio 2 |
| DURABILITY |
15 to 20 years |
Comments:
GLASS :
retains its optical qualities over time without notable modification of light transmission. It has the disadvantage of its mass per unit area and its fragility in terms of both shock resistance and resistance to structural deformation. In certain applications where the temperature differences between summer and winter are significant, the replacement rate of the glass in windows and doors can be up to 10% per year. This product is non-combustible.
REINFORCED POLYESTER:
its optical qualities are initially mediocre and are liable to decrease rapidly due to soiling of the outer surface. Its shock resistance is very good. The product's flexibility leans that it can be used on curved structures (minimum curving radius 8m). Its M4 fire classification can be improved but to the detriment of its light transmission and durability.
ONDEX bioriented PVC:
Its light transmission qualities are equivalent to those of glass. It has considerable durability. The sheets are significantly shock-resistant, particularly in the event of hail. Its performance in terms of resistance to low temperatures is exceptional, but the product is limited at higher temperatures. The techniques of natural ventilation of the undersides of roofing and the "cooling" of greenhouses mean that this product can be used in good conditions, even at relatively high temperatures. The product's flexibility enable it to be used on curved structures (minimum curving radius 2.5m) Its M1 fire classification mean that it can be used in premises frequented by the public.
PMMA :
Retains for a long time its initial properties which are excellent except for its shock resistance, particularly in the event of hail. Its permeability to water vapour limits its resistance to cold in humid regions. Its M3 and M4 fire classifications are mediocre and do not allow it to be used on large buildings (see legislation in force).
PC :
After a few years' exposure, a certain dulling or loss of brilliance may be observed due to mechanical abrasion, notably by winds carrying sand. This phenomenon has relatively little effect on light transmission as long as it is properly implemented. The relatively low modulus of elasticity means that the centre distances of the supports must be reduced. The product's mechanical properties remain practically unchanged. The fire classifications vary from M1 to M3 according to the thickness and colour.
 Download the PDF file for the technical characteristics
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