Acoustic Solutions for Industrial Noise Control – Blocking and Reducing Industrial Sound

Industrial facilities consist of a vast array of applications including manufacturing, construction sites, processing plants and so on. The usual sound issue in almost all the industrial applications appears to be the necessity to bring down the general volume of sound or lessen the level of decibel of particular machinery. The term machinery can consist of punch presses, crushers, printing equipment, grinders, drills, air tools, pumps, jack hammers and so on. The noise made by these machinery will apart from causing fatigue to operators, may not fulfill the safety requirements of regulating authorities or other noise ordinances of local bodies.

To bring down the level of sound of such machines, the ideal remedial measure is to put up an enclosure that is soundproof surrounding the machine that makes the noise. It will not only eliminate the noise but also prevent the sound from infiltrating into the nearby equipment and machinery or the adjoining locations. There are several methods to achieve this. But most of these methods will need some kind of dense and/or heavy material and perhaps some extra amount of a soft absorptive material.

In order to erect enclosures that are soundproof, you may like to think of using a mixture of the materials as follows:

A sound barrier like mass loaded vinyl (MLV) used as a combination of structures in order to add weight and help to enhance the STC of the system. One square foot of this material weighs one pound. It is available as rolls and may be cut easily with a household knife.

Alternatively, an enclosure or machine can be fitted with a lining of compound foam. This material consists of a film made of vinyl sound barrier sandwiched between two sheets of acoustical foam combining a sheet of heavy and dense material to prevent sound along with two sheets of acoustical foam that is absorptive. The barrier suspends as a flaccid mass in between the sheets of acoustical foam and decouples it from present enclosure surface thus improving its net effectiveness.

Also, barrier blankets with ultraviolet ray protection can be assembled on-site all around the machinery to minimize the machine noises. The blankets made from quilted fiberglass can be made with a barrier septum or without it and is available fitted with grommets so that they can be hung. You can also have outdoor coverings that are optional when you require ultra violet ray protection for the material.

Next, Cloudscape type ceiling baffle are installed in huge open spaces and metal structures having engineered truss systems lessening general sound pressure levels (SPL) and reverberation inside the room.

Umer Malik

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