Construction of Sound Proof Wall 

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... Technical Textile is a textile product manufactured for non-aesthetic purposes, where functional properties are the prime requirement. The growth of technical textile shows the upward trend and use of technical products in large verities of applications. Nowadays the most widely technical textile materials are used in filter, Building and Construction, Clothing, Hygiene Medicals and Furniture. One of the technical product applications in building interiors is for Acoustic. Materials that reduce the acoustic energy of a sound wave as the wave passes through it by the phenomenon of absorption are called sound absorptive materials. They are commonly used to soften the acoustic environment of a closed volume by reducing the amplitude of the reflected waves. Absorptive materials are generally resistive in nature, either fibrous, porous or in rather special cases reactive resonators. Classic examples of resistive materials are nonwovens, fibrous glass, mineral wools, felts and foams. When a sound wave strikes on acoustical materials, due to sound pressure the air molecules oscillates and particles of acoustic materials are vibrate due to transmission of sound. This vibration liberates tiny amount of heat due to the friction and thus absorb sound energy is converted to heat energy. The performance of textile absorptive materials are depends on many parameters like gram/square meter (GSM), Thickness, Air permeability, Structures, Orientation of yarn and fibers. The nonwoven fabrics are widely use as back up material due to its different structure, orientation of fibers, different method of manufacturing techniques and type of bonding (Mechanical, Thermal as well as Chemical). There are mainly four factors to be considered in choosing a sound absorbing material for a wall covering for interior like appearance, acoustic performance, environment and cost effectiveness. The sound proof walls are made by using the three to four layers of different materials. The verities of the materials are used for making the sound proof wall. Generally for making the sound proof wall the first layer is cover fabrics, which are the selected based on its look, feel and application. The second layers used the fibrous materials as backup materials. In this layer different types of fibers (Rock wool, fiber glass) or nonwoven fabrics are used and these layers are mainly responsible for the absorbing sound. The last third layer is made by plywood or timber frame which are fixed with the wall. This project introduced the glass fabric as a wall covering. The glass fabric is a good sound absorption and heat insulating properties. The glass fabric cannot directly apply on the wall because of its itching properties. It can be apply by covering with the some acoustic fabric or cover fabric, or by laminating or painting glass fabric as shown in Figure 1. This type of wall covering mainly used in the industries. When the glass fabric is used as a wall covering it gives the best results because of its properties like thermal conductivity, chemical resistance, fire resistance etc so this type of wall coverings are giving a good advantages. The glass is an inorganic material due to its unique properties and chemical composition; it will not act as a breeding ground for moulds or ...