Noise Curtains

by dB Engineering

Barrier and Quilted Fiberglass Absorber Composites

Barrier and Quilted Fiberglass Absorber Composities

dB Engineering BSC Composite features a non-reinforced loaded vinyl noise barrier septum (middle) with a quilted fiberglass sound absorber on both sides.  Ideally suited as an acoustical liner, the inner layer of quilted fiberglass decouples the barrier from the surface to improve its noise blocking ability while the outer layer adds sound absorption to the treated environment.
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Barrier and Quilted Fiberglass Absorber Composities
An outdoor enclosure shielding workers from hydraulic noise from a ball mill.

 

dB Engineering BSC Composite features a non-reinforced loaded vinyl noise barrier septum (middle) with a quilted fiberglass sound absorber on both sides.  Ideally suited as an acoustical liner, the inner layer of quilted fiberglass decouples the barrier from the surface to improve its noise blocking ability while the outer layer adds sound absorption to the treated environment.


Click photos to enlarge
examples of Barrier and Quilted Fiberglass Absorber Composities Examples of Barrier and Quilted Fiberglass Absorber Composities
Also Available As:
  • Rolls with edges bound and sewn with matching edge binding
  • Unbound rolls-edges exposed
  • Standard roll size 4'W x 25'L
  • Curtain panels with grommets at top and Hook & Loop fasteners sewn along edges
  • Liner panels with bound edges
  • Die-cut pieces, custom fabrics
  • Types of facing material on quilted fiberglass:
    VCFC - Vinyl Coated -Fiberglass  cloth
    SCFC - Silicone Coated Fiberglass cloth
    NPS - Non-Woven Porous Scrim
    Guilford - Decorative Fabric
  • Available Barriers:
    BSC products utilize 1 lb. PSF non-reinforced loaded vinyl noise barrier septum (B-10NT).
    Also available with a 2 lb. PSF or 1/2 lb. PSF barrier

dB Engineering BBC composite features a reinforced loaded vinyl noise barrier with a quilted fiberglass sound absorber on one side.  The rugged durable exterior barrier is commonly used as a wrap or acoustical jacket due to its ability to conform to any shape.  The quilted fiberglass layer decouples the noise barrier to enhance its acoustical performance.

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Barrier and Quilted Fiberglass Absorber Composities
Click photo to enlarge

Barrier and Quilted Fiberglass Absorber Composities
Click photo to enlarge

Also available as:

Both styles are available in curtain panels, bound or unbound rolls, custom fabrications or die-cut pieces, in standard vinyl-coated-fiberglass-cloth facings, high-temp silicone facings or economy facings.

Acoustical Data

Sound Transmission Loss (dB) Octave Band Center Frequencies (Hz)

Product Thickness
(In/Nom)
Wt.
Lb/SF
125 250 500 1000 2000 4000 STC
BBC-13-2" 2 1.5 13 20 29 40 50 55 32
BBC-13 1 1.3 11 16 24 30 35 35 27
BBC-14-2" 2 1.5 13 20 29 40 50 55 32
BBC-14 1 1.3 11 16 24 30 35 35 27
BSC-25 2 1.5 12 16 27 40 44 43 29
BSC-25-2B 2 2.5 19 22 28 40 56 61 33
BSC-31 2 1.5 12 16 23 33 38 39 27
Per ASTM: E 90

 

Barrier Specifications
Barrier
Component
Style Weight
Lb./Sq. Ft.
Thickness
Inches
Composite
B-10NR Non-Reinforced 1 .107 BSC
B-5NR Non-Reinforced 1/2 .042 BSC
B-20NR Non-Reinforced 2 .225 BSC
B-10R Reinforced 1 .090 BBC
B-5R Reinforced 1/2 .050 BBC

 

Sound Absorption Data-Absorber Component Random Incident Sound Absorption

Product Octave Band Center Frequencies (Hz)
125 250 500 1000 2000 4000 NRC
BBC 1" thick .12 .47 .85 .84 .64 .62 .70
BBC 2" thick .07 .27 .96 1.13 1.08 .99 .85
BBC 4" thick .21 .89 1.09 1.17 1.13 1.07 1.05
BSC 2" thick .19 .99 .96 .80 .57 .33 .85
Per ASTM: C423-81 and C423-90a

 

Table showing how the human ear perceives noise reduction.

Decibel Reduction Reduction Experienced by Ear
2 15%
4 23%
6 38%
8 48%
10 56%
12 63%
14 68%
16 75%
18 77%
20 81%