GALLERY
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Back Sandwich panels
Sandwich panels are multilayer bonded panels that feature an inner core of foamed polystyrene, coated on one or both sides with sheet material in various combinations. The applied insulator offers unique properties (low thermal conductivity, low moisture absorption, great number of defrosting cycles, high durability).
The inner layer of the sandwich panel is extruded foamed polystyrene with closed cellular texture. It differs from foamed plastic in that it has better physical and mechanical characteristics. The polystyrene core is wedged between two plastic layers of rigid PVC or foamed PVC or laminated plastic (known abroad as HPL). These panels define the color and texture of the outer surface. Plastics may be laminated with a wood imitation film. The panels are produced by cold pressing method.
Sandwich panels are widely used in construction (door filling, wall cladding, jambs) or decorative furniture finishing. Sandwich panels may be used for manufacturing of partitions, facing elements of balconies or advertising billboards.
Features
Light weight (weighs around 3.7 kg at 24 mm thickness of one sq. m with 1 mm thick rigid PVC)
Good thermal insulation (heat transfer rate is 1.05 W/m2 x °C at 24 mm of thickness)
Good acoustic insulation (24 dB at 24 mm)
High moisture resistance
High impact resistance
High static and long-term strength (compression strength 0.25 MPa at 10% of deformation)
UV resistance
Machinability with standard instruments for wood and metal
Inner layer features
Average density of 35 kg per cubic m
Low heat transfer rate (0.029 W/m2 x °C) nearly does not change in increased humidity cyclic load
High compression strength of 0.25 MPa
Low moisture absorption of maximum 1.5% for 30 days
Good fire resistance — rated G1 according to GOST 30244-94 (low inflammability)
Recommendations for use
Use at temperatures between - 30 °C and + 60 °C
Care must be taken when mounting panels for use at a wide range of temperatures to consider linear expansion that equals 7 x 10-5 °C. Standard bonding helps easy mounting of the panels. They can be sawed and cut to custom size, as well as glued, nailed and bolted.
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