Cellular polycarbonate sheet
Cellular sheet of polycarbonate is a hollow polymeric sheet with the internal structure representing a multilayered construction, filled with longitudinal crosspieces — stiffening ribs.
Due to its internal structure it is also called «structured» or «honeycomb». The structure can have two-, three- or a four-layered construction, and its stiffening ribs can form squares, triangles or cross structures. Other names reflecting a structure of material are Multiwall polycarbonate sheet, Cellular polycarbonate.
High plasticity and resistance of the material makes possible to receive the sheets with very thin walls (0,3-0,7 mm) by extrusion way without loss of shock-resistant characteristics and with very small weight at the same time. By means of considerable quantity of empty spaces the weight of a sheet decreases, so, its cost value decreases also. The cellular structure gives visual lightness and airiness to the polycarbonate constructions.
Basically, the producers manufacture the panels in the thickness from 4 to 35 mm. They can be transparent, colour and also multicoloured, when one of external surfaces has one colour and another has the other colour. Plasticity of polycarbonate allows forming cellular sheets of a various configuration (zigzag and wavy) as well as profiled sheets.
Unique features of cellular polycarbonate sheets
Technical properties of cellular polycarbonate sheets
| Properties |
Thickness of a sheet, mm |
| 4 |
6 |
8 |
10 |
16 |
20 |
25 |
32 |
Weight, kg/sq. m * |
0,8-1,0 |
1,3 |
1,5-1,7 |
1,7-2,0 |
2,5-2,7 |
3,0-3,1 |
3,4-3,5 |
3,7 |
Minimum bending radius, m * |
0,7 |
1,05 |
1,2-1,4 |
1,5-1,75 |
2,4-2,8 |
3,5 |
3,75-4,4 |
4,8-5,7 |
Sound insulation, dB * |
15-16 |
18 |
18-20 |
19-24 |
20-27 |
22 |
22-30 |
36 |
Heat-transfer resistance R, m2°Ñ/Wt * |
0,24-0,26 |
0,27-0,31 |
0,28-0,42 |
0,29-0,40 |
0,36-0,51 |
0,37-0,56 |
0,65-0,68 |
0,63-0,83 |
Heat-transfer rate, Wt/ m2õ°Ê * |
4,1 |
3,7 |
3,6 |
3,1 |
2,0-2,4 |
1,8-2,0 |
1,6-1,7 |
1,4 |
Optical transmission (for transparent colourless sheet) * |
82 |
82 |
82 |
80 |
76 |
51-79 |
18-79 |
50-73 |
Absorbed blow energy, Nm |
21,3 |
27 |
> 27 |
> 27 |
> 27 |
> 27 |
> 27 |
> 27 |
* Depends on producer and structure of a sheet
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