Product Introduction:
The double core material sandwich panel refer to steel plates on the upper and lower sides, and there are two compositions on the middle core material, which are polyurethane and rock wool; polyurethane, rock wool and steel plate are firmly bonded together to compose a sandwich fireproof panel.
The rock wool pu sandwich panel combine the non -combustibleness of the rock wool, high temperature resistance and the heat insulation of polyurethane, and effectively isolate the heat of the fire and the flue gas spreading outward, which hinders the spread of the fire. The fire resistance of rock wool is the best, and polyurethane has the best insulation performance. The combination of these two core materials can make the advantages of this sandwich board to the extreme.

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Product name |
Rockwool + PUR Sandwich Panel |
Rockwool + PIR Sandwich Panel |
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Model |
1+1 RW/PUR |
1+1 RW/PIR |
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Core material |
Rockwool &PUR |
Rockwool &PIR |
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Density |
80-120kg/m3; 40-42kg/m3 |
80-120kg/m3; 45-48kg/m3 |
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Thickness of panel |
100/120/150/180/200mm (Regular PU/PIR 100/150mm+50mm rockwool) |
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Both sides |
Color coated galvanized steel,Aluminum zinc plate, stainless steel,aluminium steel |
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Thickness of steel sheet |
0.4-0.8mm |
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Coating |
PVDF/HDP/SMP/PE |
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Effective width |
1000-1120mm |
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Length of panel |
Max.11.8m |
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Fireproof grade |
Rockwool : A PIR: B1 PUR: B2 |
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Product features of rock wool pu sandwich panel:
1.Fire resistance performance:The rock wool core material is a non-combustible material with a melting temperature of ultra-high 1000 °C, which can effectively block the flame court in the fire and minimize fire losses.
2.Thermal insulation and energy saving:The thermal conductivity of rock wool is low (0043w/m · k) and the thermal insulation performance is good. Excellent nodal design ensures sealing performance and thermal insulation.
3.Good sound insulation:The amount of sound insulation ≥ 30DB, which effectively reduces the interference of external voices.
4.Watertight/airtight:The use of polyurethane edge banding, the tongue and groove can effectively prevent the infusion of water; The interior of the building part of the rock wool pu sandwich panel is closed to maintain good air tightness.
5.Stable and durable:The selection of high-quality rock wool material,high water-hating rate, long-lasting stability.
6.Beautiful appearance:Screw hidden node design of rock wool pu sandwich panel, high flatness of the panels surface, rich color of the paint coating, long-lasting color.

Introduction of rock wool:
1. Production process of rock wool:
Rock wool is mainly made of selected high-quality natural basalt, dolomite, etc., melted in cupola (>1500 ℃) at high temperature, spun into fiber at high speed by internationally advanced four-roller centrifuge, sprayed with a certain amount of binder, dust-proof oil, water repellent, collected by cotton collecting device, laid with pendulum, solidified and cut to form products of different specifications and purposes. At the same time, it can also be deeply processed into seam felt, tube sleeve and veneer products.
2.Features of rock wool:
·Incombustible fireproof material A1
·Excellent fire resistance
·No toxic gases are released
·Temperature resistance above 650 ℃
·High temperature shrinkage resistance
·Superior thermal insulation effect
·Good thermal insulation performance
·Excellent air permeability
·Obvious sound absorption and noise reduction
·High shape stability

Rock wool for sandwich panel:
Rock wool for sandwich fireproof panel is specially designed for metal surface rock wool insulation panel. Using proprietary production technology, rock wool core material is uniform and compact, with excellent structural performance. rock wool insulation panel can not only maximize the appearance of modern buildings, fire insulation, heat insulation, energy saving and environmental protection, but also reduce the cost of the entire building. It has a very wide range of promotion value.
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Density |
100kg/m³ |
120kg/m³ |
150kg/m³ |
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Size |
1200×600mm |
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Thickness |
90-120mm |
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Strip of rock wool |
Thickness 30-200mm |
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Size of rock wool strip |
1200×100mm |
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Technology and parameters of rock wool insulation panel :
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Performance |
unit |
100kg/m3 |
120kg/m3 |
TTJ150kg/m3 |
test standard |
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performance of Combustion |
- |
Class A1 non-combustible |
GB/T8624-2006 EN13501-1 |
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Compressive strength of rock wool panel |
kPa |
≥85 |
≥105 |
≥150 |
GB/T13480 EN826 BS2972 |
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Shear strength |
kPa |
≥60 |
≥80 |
≥100 |
EN 12090 |
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Tensile strength(fiber direction) |
kPa |
≥150 |
≥200 |
≥300 |
JG 149-2003 EN1607 |
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(25℃)Thermal conductivity of rock wool panel |
W/(mk) |
≤0.038 |
≤0.039 |
≤0.040 |
GB/T10295 ASTMC518 |
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Thermal conductivity of core material slats(25℃) |
W/(mk) |
≤0.043 |
≤0.043 |
≤0.046 |
GB/T10295 EN12667 |
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Short term water absorption |
Kg/㎡ |
≤0.5 |
GB/T5480 EN1609 |
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Hydrophobic rate |
% |
≥99.5 |
GB/T10299 |
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Melting temperature |
℃ |
≥1000 |
EN4102-17 |
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Dimensional stability |
% |
<0.5 |
GB/T8811 EN1604 |
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Acidity coefficient |
- |
≥1.8 |
GB/T 5480 |
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Characteristics of rock wool for sandwich fireproof panel:
●Class A1 non-combustible material
●Not flammable ,do not release toxic gas
●Compressive and tensile strength to meet the requirements of large-span color steel rock wool insulation panel
●Good thermal insulation performance and can maintain long-term stability
●It has strong high-temperature shrinkage resistance and can keep the system structure stable when fire occurs
●No corrosion to metal materials
●The fiber of rock wool is non-toxic and safe to use
Rock wool used for sandwich fireproof panel has stable strength and durability indicators, ensuring the reliability and uniformity of sandwich panel performance.Rock wool core material does not burn, does not release heat and toxic smoke, fire can also effectively cut off the spread of flame , fire performance is excellent.
Good thermal insulation performance can improve the building thermal resistance value, reduce the energy consumption of building heating and air conditioning, and save energy and emissions. No corrosion to various metal materials.
The rock wool insulation panel is made of rock wool with fibers arranged vertically and then bonded with the metal surface to form a metal surface rock wool sandwich fireproof panel. The structure of the vertical fiber gives the sandwich fireproof panel have the characteristics of high shear resistance, compression resistance and tensile strength.

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