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(11) | EP 2 322 736 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | A polycarbonate building panel |
| (57) A building panel 70 comprises a hollow elongate structure 72 having a generally rectangular
cross-sectional profile. The elongate structure 72 comprises first and second outer
skins 74 and 75 joined by substantially parallel first and second side walls 76a and
76b. A connecting means 78 of first and second ribs 82 and 84 is provided on each
side wall 76 respectively wherein, in use, adjacent panels 70 can be connected to
each other side by side to form a segment of a wall or roof. The locking arrangement
of second ribs 84 provides additional strength to the overall structure of joined
panels. The elongate structure 72 further comprises two inner skins in the form of
webs 80 and 81 extending between the first and second side walls 76 so as to divide
the interior of the elongate structure into three chambers. The triple chamber profile
of the elongate structure 72 provides the panel 70 with additional structural strength
and rigidity, as well as improved thermal and sound insulation properties. The lower
chamber 90 may be fitted with a polycarbonate sheet to increase thermal and acoustic
performance. The panel 70 is preferably made of polycarbonate.
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