a993
a994

Isofon A993

Acoustical and thermal insulation consisting of a layer of high density fiberglass board (Tac-Board) backed with a blanket of low density fiberglass. Multiple densities and thicknesses are available, with a variety of facings and backings.

Product Description

is an acoustical and thermal insulation consisting of a layer of high density fiberglass board (Tac-Board) backed with a blanket of low density fiberglass. Multiple densities and thicknesses are available, with a variety of facings and backings.

Application

Perforated vinyl laced sound absorption used in the cab and the operator’s platform area where a barrier layer is not needed.

Fiber composition

25 – 45% T Fiber

55 – 75% S Fiber

T-Fiber (Textile Type Fiberglass)

  • Fiber Diameter: 0.0009 tot 0.0140 mm
  • Binder Content: 17 – 23% by weight

S-Fiber (Rotary Type Fiberglass)

  • Fiber Diameter: 0.004 to 0.008 mm
  • Binder Content: 14 – 20% by weight

Density

96 ± 10 kg/m³

Compression 50% (6.45 cm² area)

Min. 100 kPa

Break Force

Min. 245 N

Flammability

SAE J369: SE/NBR

Acoustical Performance

Sound Absorption Coefficients (Random Incidence)  125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz
 Composition Thickness (mm)
25.4 0.15 0.30 0.70 0.90 0.90 0.90
50.8 0.30 0.90 0.90 0.90 0.90 0.90