BASE METAL : Panels are manufactured
using special grade steel, usually 1.5mm thick and formed into tray
panels with flanges of between 25 and 40mm. The steel conforms to
the requirements of BS EN 10209.
PANEL SIZES : Maximum -3000 x 1200mm.
Corner panels 3000 x 800 x 350mm
FABRICATION : Panels are formed to the
shapes and sizes detailed in approved drawings, to a tolerance of
+/-2mm. Flanges will be formed by folding to an outside radius of
3mm. All welds positioned in visible areas are ground to remove
surface roughness.
VITREOUS ENAMEL : Both sides of a panel
are coated with specially selected ground coat enamel frits to
ensure good enamel to steel adhesion. The panel face side is
further coated with enamel cover coat using frits selected for good
surface appearance and gloss properties.
Face side enamel colour can be selected from RAL or BS
standard ranges.
Colour match samples can be arranged when
requested.
CORE MATERIALS : The following are
available : • Cement based fibre board • Polyurethane
foam • Aluminium honeycomb.
BALANCER MATERIAL : When specified, 0.6mm
thick galvanised balancer is employed to improve panel flatness and
rigidity.
BONDING : The core and balancer materials
are bonded to the rear of tray panels using a two part polyurethane
adhesive. After application, the composite assembly is pressed
under vacuum pressure against platens having a flatness
tolerance of +/-0.2mm, until the adhesive reaches handling
strength.
