EPS/Rock Wool/Glass Wool/PU Sandwich Panel

I. The Construction Sandwich Panel
1)The upper and lower surfaces: Adopted by galvanized color steel plate, thickness 0.4-0.8mm. According to customer's specific need, it also can be used Galvanized color steel plate or aluminum plate. After rolling by the mould machinery the steel plate is stuck with the rock wool. 
2)Rock wool core material: The density of rock wool block is 120kg/m3, it is staggered and rolled out with its fiber direction perpendicular to the upper and lower surface of the sandwich panel, the rock wool is closely-phase jointed filling the entire vertical and horizontal section of the sandwich panel. The rock wool between the blocks and steel sheet is shaped into one whole block by high-intensity foam, sophisticated process ensures high-density rock wool insulation between the inner body and metal plate can produce a very strong adhesion, which made rock wool sandwich panel has a strong stiffness. 

II.  Advantages: 
1) Good fireproof performance: Using rock wool materials, special process and formula, the sandwich panel has good fire performance. Tests showed that it can stand more than 1000 degree of the fire. 
2)Good thermal insulation: The insulation thermal conductivity of the rock wool sandwich panel is low as λ = 0.043 W/m2 K, 
3) Remarkable sound insulation and absorbtion 
Sound insulation: The Rock wool sandwich panel has a significant reduction of noise transfer, it is particularly applied to place where there are regular flights. In addition, the indoor sound from the impact of the rain, hail, etc also decreased after using rock wool roof panel, but also significantly decreased. 
According to ISO 717/82 and UNI 8270 / 7 criteria, sound insulation effect of rock wool sandwich panel with density of 100kg/m3 rock wool core material can achieve RW = 29 ~ 30 dB.