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Acoustical Curtain Systems
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dB Engineering's Acoustical Curtain
Systems offer an effective, economic method of noise reduction in a wide variety of
industrial, architectural, community and OEM noise control applications. Acoustical
Curtain Systems can be configured to create total enclosures, partial enclosures, hoods or
shrouds, barrier walls and divider partitions.
A wide variety of dB Engineering
Acoustical Curtain Panels and curtain support framing options are available from United
Process to meet any requirements.
In addition to very effective, high
performance acoustical curtain panels, a successful, functional acoustical enclosure often
requires a wide array of features and options. These include roof-top panels,
valances, corner treatments, view windows, ventilation baffles, exhaust fans and a variety
of curtain support frame options,
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Features
- STC up to 32
- NRC up to .85
- Custom engineered
systems for any application
- Quick access to
machinery and equipment for operation and maintenance
- View windows for
visibility
- Roof Panels and
ventilation systems available when required
- Easily installed,
relocated or modified
- Durable constructions
for long service life in severe industrial conditions
- Fire safe and low
smoke emissions per ASTM E-84,Class 1
- Curtain system models
are offered in various styles for optimum solution of application's requirements
- Economical
alternative to rigid acoustical panel systems
Applications
- Plastic Granulators,
Grinders, Pelletizers
- Vibratory feeders and
vibratory bowls
- Pumps and motors
- Compressors
- Presses, swaggers,
screw machines
- Generators
- Fans, turbines,
blowers
- Hydraulic Units
- Numerous industrial
applications
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Attack noise problems at their
source. Surround the noise with a Noise Curtain System.
Problem: A small,
high-speed, automatic stamping press, operated continuously through the day producing
noise levels of 95 to 100 dBA in the surrounding area. The operator’s duties involved
only loading the strip stock, changing dies, removing finished parts, and monitoring the
operation visually.
 Solution: A flexible, composite "curtain" of
BSC-25 was hung from a track around the entire press. A sliding panel of the same material
with a transparent vinyl viewing window provided access to the inside enclosure. [Click for larger image.]
Results: The enclosure,
with the door closed, provided 15 dBA noise reduction in the adjacent area, including the
operator’s station.
| Sound Absorption
Data-Absorber Random Incident Sound Absorption |
| |
Octave Band Center Frequencies (Hz) |
| 125 |
250 |
500 |
1,000 |
2,000 |
4,000 |
NRC |
| BBC
Products 1" th. |
.12 |
.47 |
.85 |
.84 |
.64 |
.62 |
.70 |
| BBC
Products 2" th. |
.07 |
.27 |
.96 |
1.13 |
1.08 |
.99 |
.85 |
| BSC
Products 2" th. |
.19 |
.99 |
.96 |
.80 |
.57 |
.33 |
.85 |
Per ASTM: C-423 |
| Sound Transmission Loss
(dB) Octave Band Center Frequencies (Hz) |
Curtain
Product |
Thickness
(in./Nom.) |
Wt.
Lb./S.F. |
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-25-2B |
2 |
2.5 |
19 |
22 |
28 |
40 |
56 |
61 |
33 |
| BSC-25 |
2 |
1.5 |
12 |
16 |
27 |
40 |
44 |
43 |
29 |
| BSC-31 |
2 |
1.5 |
12 |
16 |
23 |
33 |
38 |
39 |
27 |
| BSC-25-RP |
2.5 |
2.6 |
19 |
20 |
28 |
42 |
56 |
62 |
31 |
Per ASTM:E-90 |
| Flammability Ratings |
| Product |
Description |
Flame Spread |
Smoke Density |
| BSC-25 |
Vinyl faced 1" quilted
fiberglass on both sides of a 1 lb. PSF non-reinforced loaded vinyl noise barrier septum. |
23 |
30 |
| BSC-26 |
Silicone faced 1" quilted
fiberglass on both sides of a 1 lb. PSF non-reinforced noise barrier septum. |
4 |
19 |
| BSC-24 |
Scrim faced 1" quilted
fiberglass on both sides of a 1 lb. PSF non-reinforced noise barrier septum. |
5 |
1 |
| BBC-13-2" |
Vinyl faced 2" quilt on one
side of a 1 lb. reinforced loaded vinyl noise barrier |
23 |
12 |
| BBC-13 |
Vinyl faced 1" quilt on one
side of a 1 lb. reinforced loaded vinyl noise barrier |
23 |
30 |
| BBC-14 |
Silicone faced 1" quilt on one
side of a 1 lb. reinforced loaded vinyl noise barrier |
4 |
19 |
Above table shows flame
spread and smoke density ratings per ASTM Designation E84; Surface Burning Characteristics
of Building Materials.
Note: Class 1 (or A) rating applies to products with a flame spread of 25 or less.Additional products tested to ASTM E 162 and
ASTM E 662, available on request. |
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% |
Points To
Remember• Attack the noise at the source — surround it.
• Curtains should just touch the floor — no gaps.
• Most enclosures do not need a roof.
• Sliding doors allow easy access to the inside of enclosures.
• Clear vinyl windows give quick viewing to critical areas.
• Curtain systems can be hung from ceiling track systems.
• All materials meet the toughest fire ratings.
Call 1-800-NO-NOISE
for a custom-engineered noise curtain solution.
Or, use our convenient e-mail inquiry form.
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