KFA quilted face fibreglass absorbers are fire safe, high performance, acoustical attenuating fibreglass blankets that are used to reduce reverberant (reﬂected) airborne noise. The absorbers are an excellent alternative to urethane foams since they are free safe, exhibit low smoke emissions, and possess high mechanical strength. Additionally, they have a wide temperature range, can be cleaned, and are unaﬀected by moisture, humidity, dust, dirt, oils and most chemicals. Flexible quilted absorbers are easily installed, will not degrade, and have extremely long service lives.
KFA fundamental component is a low binder, fine fibre, acoustically absorptive, fibreglass batting. Two diﬀerent reinforced, nonporous, fibreglass cloth facing materials are available and are quilted directly to the fibreglass batting using high strength thread and locking stitches. The quilting forms a matrix of 4” (102 mm) diamond stitch patterns which encapsulate the glass fibres. When the facing material on these stable encasements is subjected to airborne sound waves, the individual membrane faces respond diaphragmatically, like a drum head, and transmit sound energy through the nonporous facing into the fibreglass batting core material, where it is dissipated as thermal energy Available as single or double layer, nominal thickness 1″ (25 mm) or 2″ (51 mm). Double layer thickness increases low-frequency absorption and provides significant transmission loss characteristics.
Depending on application requirements, the quilted absorbers can be faced on one or both sides. Available facings include the standard aluminium-vinyl coated fibreglass cloth (A), impervious high-temperature silicone-coated fibreglass cloth (S) which is quilted using a Nomex stitching thread, or non-maintenance, nonwoven, porous, scrim fabric (N). The three facing materials can be used individually or in combination on the same absorber so that special properties or economies can be achieved.
Model KFA quilted fibreglass absorbers can be used in many diverse industrial or OEM applications including absorptive linings for machinery housings, building walls, curtain or fixed enclosures, compartments, hoods, operator cabs, piping and ductwork or wherever reduction of reverberant noise is required.
Specifications and Physical Properties