IES 2000

Acousti - Panels and Screens
 
Ideal for temporary workstations ever changing production needs.

For detailed product specs see our NEW site at

http://www.artusaindustries.us

Curtain Wall and Panel Systems

 An economical alternative to rigid acoustical panel systems

High actual noise reduction up to 25 dBA Custom engineered systems for any application Roof Panels and ventilation systems available.

Fire safe and low smoke emissions per ASTM E-84, Class 1.

Easily installed, relocated or modified.

View windows are options for visibility.

Washable and steam cleanable component materials.

Durable constructions for long service life in severe industrial conditions.

  
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Panels, Screens, and Curtain Walls

 


 Features

  • One Piece welded steel construction
  • Versatile screens are completely made for maximum accessibility
  • Available with a variety of panels

Typical Applications ...
Optional Casters make moving these screens a one person job
  • Mobile enclosures
  • Machinery partitions and dividers
  • Wood working facilities
  • Lathes, routers saws
  • Welding screens
  • Hydraulic units, motors and grinders
  • Metal shop facilities


This Portable enclosure with a roof was designed to achieve up to 20db(A) noise reduction

 Optional Items
  • Roof Panels
  • Casters
  • Viewing windows
  • Ventilation Baffles
  • Lifting Lugs

 

Description

Flame Spread

Smoke Density

IBSC-25

Vinyl faced 1” quilted fiberglass on both sides of a

1 lb. PSF non-reinforced loaded vinyl noise barrier septum

23

30

IBSC-26

Silicone faced 1” quilted fiberglass on both sides of a

1 lb. PSF non-reinforced loaded vinyl noise barrier septum

4

19

IBSC-24

Scrim faced 1” quilted fiberglass on both sides of a

1 lb. PSF non-reinforced loaded vinyl noise barrier septum

5

1

IBBC-13-2

Vinyl faced 2” quilt on one side

Of a 1 lb. Reinforced loaded vinyl noise barrier

23

12

IBBC-13

Vinyl faced 1” quilt on one side

Of a 1 lb. Reinforced loaded vinyl noise barrier

23

30

IBBC-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 E84.

 

Acoustical Data

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

IBBC-13-2”

2

1.5

13

20

29

40

50

55

32

IBBC-13

1

1.3

11

16

24

30

35

35

27

IBSC-25-2B

2

2.5

19

22

28

40

56

61

33

IBSC-25

2

1.5

12

16

27

40

44

43

29

IBSC-31

2

1.5

12

16

23

33

38

39

27

IBSC-25-RP

2.5

2.6

19

20

28

42

56

62

31

Sound absorption Data-Absorber component random incident sound absorption

 

Octave Band Center Frequencies

125

250

500

1000

2000

4000

NRC

IBBC products 1” th.

.12

.47

.85

.84

.64

.62

.70

IBBC products 2” th.

.07

.27

.96

1.13

1.08

.99

.85

IBSC products 2” th.

.19

.99

.96

.80

.57

.33

.85

 

How Noise Barriers Work

The "nuisance" noise is "diffracted" over the barrier increasing the distance it must travel to the listener.

From this sketch, we can derive this equation: Z =A+B-C

Z (Metres)
Potential Noise Decrease
Due to Diffraction
1
15dB(A)
2
18dB(A)
The values above are approximate and do not represent a linear relationship

Reflection & Absorption

The effectiveness of a barrier depends on how well it diffracts and absorbs the noise.

A high performance barrier has negligible noise transmission and reflection. This is controlled by two coefficients: Absorption() and Sound Insulation (R).

Quality IES Noise Barriers

Two Types of IES Noise Barriers

Absorptive Barriers:
Reflective Barriers:

  • Absorb the noise that strikes them
    • (Reflections are negligible)
  • For High Performance
    • Sound Absorption Coefficient > 8dB(A)
      (negligible noise reflected)
    • Sound Insulation Coefficient > 25dB(A)
      (negligible noise transmitted)

  • Redirect the noise that strikes them.
    • (They do not "reduce" the noise)
  • For High Performance
    • Sound Insulation Coefficient > 25dB(A)
      (negligible noise transmitted)
    • Reflections must be accounted for.
      (as shown below)

Reflection Effects: Multiple Reflections & Interactions

As we can see from the example on the left, the truck or lorry acts as a reflecting surface and contains the intensity of the noise (i.e. does not allow it to dissipate) until it has cleared the reflective noise barrier. This results in little, if any reduction of noise.

In some circumstances, if there is a parallel reflective surface this can also reflect the noise on the opposite side of the truck, doubling the intensity of the noise experienced by the resident.

This is a prime example of where an absorptive noise barrier system would be much more effective and should be incorporated.

 

 

GRANULATOR OPERATION MADE MORE BAREABLE

Sound Seal Curtain Enclosure

Curtain enclosure constructed of IBBC-13-2" reduced noise levels by 22dB(A).  

Inset Custom feed-flap protects operator during loading.

Curtain Enclosure Diagram

 

 

  Like other manufacturers, this plastics producer has a certain amount of waste inherit in the making of a product.   But fortunately, they are able to recycle waste.  Waste is loaded into a granulator which grinds the plastic into tiny pellets.  Eventually these pellets are reused in a finished product.

The problem was that no employee wanted to go near the granulator.  It was the loudest machine on the shop floor peaking at 110 dB(A).

Finally, the noisy granulator became too much for management to deal with.  Complaints from shop employees became more frequent, waste piled up meaning that potential raw materials were being squandered and the threat of an insurance claim or an OSHA violation grew every day.

Something had to be done.

Company management figured that the best way to overcome the problem was with some type of acoustical enclosure.

Applications engineers offered an enclosure design featuring their IBBC-13-2"  composite material, a combination sound absorber and noise barrier product.  The composite is made up of a 1 lb/sq.ft. reinforced loaded vinyl noise barrier and 2" thick quilted fiberglass sound absorber.   Typically, a 1" thick absorber is put on the interior of a reinforced barrier.   But because of the extreme conditions in this case, engineers utilized the 2" thick material.

A critical design feature was a feed flap that gave the operator a substantial amount of protection when loading the granulator.  Prior to the installation, the operator was subjected to 110 dB of noise at close range.  Continuous loading of the granulator without hearing protection would have been disastrous.  With the new enclosure featuring the feed flap, an operator no longer needs hearing protection. 

Issues of operation and maintenance were overcame by the double curtain track and hardware design which allows access at nearly any point in the enclosure.

Another key design feature is the ventilation system.   Too often, the installation of a roof panel means sacrificing ventilation for enhanced acoustical performance.  Our acoustical curtain enclosure can incorporate intake and exhaust ventilation baffles without compromising acoustical performance.

For Duct Lagging too!