Acoustical insulation meterial

ProductDescription: Glass wool felt wrapped with two types of face and no face. It is light, burliness, elastics and useful product. With the features of temperature prevention, good refrigeration control, effective denoise, long using life and easily building up, it is composed in high pressure by the nicety, fixed inorganic fibre with uniform texture and water insoluble, fireproof heat resin. It will achieve the best effect and create the comfortable living environment if applied the thickness and density appropriately. Usage: Glass wool felt is specially designed for business building, organization building, the hollow wall of industrial and agricultural buildings as well as the sound absorbing and temperature keeping and heat insulate processing. Standard Specification: Unit Weightkg/m310,12,14,16,20,24,32Thicknessmm25,30,40,50,75,100Sizemm1200*10-20m Package: Plastic Packaging. Heat Insulation Effect: The product has the good heat insulation that has been checked through GB/T10294-1988 standard, in the average temperature 70±5, heat conduction coefficient≤0.043WmK. The data listed below is the comparison of various building materials with the same heat insulation effect of glass wool felt in the standard of unit weight 10kgm3, thickness100 mm. Glass wool Felt 100mm Wood 280mm Plywood 350mm Flat Glass 1790mm Concrete 3680mm Plasterboard 450mm As the conclusion, glass wool has the great heat insulation effect of 3 times of wood and 37 times of concrete. Sound Absorbing Effect (Face glass wool felt),Sound Absorbing Coefficient: Unit Weight (kg/m3)Thickness (mm)Face TypeOctave Band Central Frequency(Hz) 125 250 500 1000 2000 4000 NRC 1650Enhonced Aluminum Foil 0.23 0.80 1.25 0.86 0.42 0.26 0.85 1675Enhonced Aluminum Foil 0.50 1.18 1.20 0.72 0.42 0.25 0.90 16100Enhonced Aluminum Foil 0.64 1.30 1.21 0.75 0.48 0.28 0.95 NRC-Denoise Coefficient: If use the face of thin or glass cloth and other ventilate faced material, there are no changes of sound absorption. However, if coating on the surface of the glass wool or face, the sound absorption will be reduced in depend. Sound Absorbing Effect (no face glass wool felt), Sound Absorbing Coefficient: Unit Weight (kg/m3) Thickness (mm) Octave Band Central Frequency(Hz) 125 250 500 1000 2000 4000 NRC 16 25 0.12 0.28 0.73 0.89 0.92 0.93 0.70 16 50 0.24 0.77 1.13 1.09 1.04 1.05 1.00 16 75 0.43 1.17 1.26 1.09 1.03 1.04 1.15 16 100 0.73 1.29 1.22 1.06 1.00 0.29 1.15 NRC-Denoise Coefficient: The thickness is effective greater than density if to increase the sound absorption. If increasing thickness, absorbing rate will increase greatly in the range less than 1000Hz. Density x thickness= glass wool absorption, it shows that thicker thickness, great sound absorption.