Industrial Noise Reduction

Your company can save thousands of pounds on industrial noise reduction by choosing solutions that reduce the noise at source instead of buying alternatives such as acoustic enclosures.  “At source” solutions provide a higher noise reduction at considerably lower cost than other types of industrial noise control solution such as acoustic panels fitted to the factory walls / ceiling.  Another major benefit is that “at source” solutions avoid the access restrictions of acoustic enclosures / covers, which make it difficult to see and operate machines.  The “at source” type of solution is available from our specialist industrial noise reduction company.  We have over 35 years’ experience of successfully reducing noise in industry using this type of solution. 

An advanced technology noise control solution
Noise reduction example for biscuit machines in food and bakery industry

For more details of the large cost savings and other major benefits that our specialist solutions provide when reducing industrial noise, see solutions to reduce noise at work.

For sound that is causing nuisance to residents living near a factory, see reduce noise nuisance – industrial.

We are specialists in machine and factory noise reduction. Our company has solved many types of industrial noise control problem for numerous factories and companies across a very wide range of manufacturing sectors throughout the UK. For our specialist help to find the best, lowest cost sound solution, contact us or ring us on 01727 864667.

Examples of Machine Noise Reduction Solutions in Industry

Below are examples of the industrial noise reduction solutions we have provided for some of the most common types of machine and factory when reducing noise at work. In all of the examples below we used a specialist engineering solution or advanced technology to reduce the noise at low cost without the use of acoustic enclosures or covers.

Air Conveyors. A company quoted £130,000 to reduce noise from air conveyors (airveyors) by installing noise control enclosures. The customer chose our company instead. Our sound solution was very successful, suppressing the noise by 6 dBA and reducing it below the 85 dBA target. Our noise solution cost only £2500, saving £127,500.

Air Knife. A purpose-designed silencer and air flow modifications were used to abate noise from an air knife by 11 dBA. The noise at the nearest worker fell from 93 dBA to 82 dBA. Similar noise attenuating treatments have been applied to many other air knives at considerably lower cost than using acoustic enclosures.

Fan noise reduction for plastic bottle conveyor at food manufacturer

Air Jets. Compressed air jets and air guns are commonly used in UK industry to dry, cool, clean or eject components. Our noise control solutions have achieved sound reductions of 7 – 15 dBA on numerous air jets and air guns while reducing compressed air usage and energy consumption at the same time. Our compressed air gun / air jet noise suppression methods are very low cost and use minor engineering modifications to muffle / suppress the noise at source. Example: compressed air jet nozzles used for cooling the plastic product on blow mould machines. Low cost engineering treatment applied to these cooling air jet nozzles reduced the noise by 7 – 9 dBA for very low installation cost. Air jets are a very common cause of high noise levels, and we have successfully reduced their noise in numerous applications.

Belt noise.  Technique used: engineer noise out at source. Result: 10 – 12 dBA reduction on a range of different machinery drives where belt noise was the problem.

Biomass Fans. 15 – 20 dBA sound reduction on fans used to dry wood chips for biomass boilers. Biomass drying fans are a common cause of noise nuisance affecting local residents. For information on biomass boilers, see boilers below.

Blower. Reductions of 13 – 15 dBA achieved on a variety of different blowers using various low cost sound muffling measures.

Blow mould machine. The diagnostic tests carried out by our engineer showed that most of the noise was generated by the cooling system. Treating this gave a reduction of 7 – 9 dBA on a range of different blow mould machines. The cost was considerably lower than the normal method of soundproofing the entire machine.

Exhaust Fan Noise Reduction
An example of reducing vibration feeder noise at biscuit factory

Boiler – Industrial.  Our specialist acoustic engineering solutions have cut industrial boiler noise by 10 – 12 dB, and often by 15 – 22 decibels. This type of solution is a particularly effective treatment for cancelling low frequency boiler drones, and has the additional benefit of low installation cost.

Cardboard slitter & cutter. Small sound-proof guard modifications provided 9 dBA reduction on a slitter and cutter machine in a cardboard manufacturing factory for a fraction of the cost of an acoustic enclosure.

Chute. Noise from product impacts on chutes is very common in many types of factory. We have achieved reductions of 8 – 15 dBA on numerous chutes using a sound deadening noise solution that is as durable as the original chute material. This contrasts with other types of noise treatment commonly applied to chutes, which use a material that quickly wears away, whereupon all the sound reduction is lost and the loud chute impact noise returns. As well as achieving high noise reductions, our chute impact sound deadening solutions are low cost and avoid the need for expensive acoustic enclosures and soundproofing.

CNC machines.  We were able to reduce CNC machine noise by 9 – 10 dBA using a simple noise suppression treatment.

Coater. The noise from paper coater machines was reduced by 10 – 14 dBA using low cost acoustic engineering treatment.

Compressed air. Numerous compressed air noise problems have been solved successfully. For example, treating compressed air jet nozzles on a can drier in the drinks industry provided a 15 dBA reduction at very low cost.

Compressor.  Noise attenuation of 6 – 10 dBA achieved on various types of compressor by purpose-designing a silencer. Our silencers are all designed to have a very low resistance to air flow. In contrast, most commercial high performance types of silencer / muffler have high resistance, which can impair fan performance and cause overheating. On some types of compressor, we have used engineering sound abatement methods to reduce noise levels by 15 – 31 dBA at considerably lower cost than fitting acoustic enclosures and industrial soundproofing.

Conveyor. Our low cost noise suppressing techniques have been applied to several types of factory conveyor, reducing the conveyor noise by 6 – 11 dBA.

Cyclone. Advanced noise cancelling technology has been applied to several types of cyclone, reducing noise by 21 dBA. This very large sound reduction was achieved at very low cost using minor engineering air-flow modifications fitted inside each cyclone.

Suppression of noise from industrial dust extract fan
Sander Noise Control

Drier.  10 – 11 dBA noise attenuation achieved on several different driers by purpose-designing a high performance muffler. Each muffler was designed to have low resistance to air flow, so there was no significant loss of fan or drier performance.

Drink filling machine impacts. Engineering sound deadening modifications were fitted to filling machines in the drink industry, reducing the impact noise generated by the filler by 7 – 11 dBA at considerably less cost than using acoustic enclosures. Our sound deadening solution was highly durable as well as highly effective.

Electric motor. We designed a silencer to muffle / attenuate the sound on many different types of electric motor, achieving reductions of about 10 dBA.

Dust Extractor Fan Noise Control

Extruder.  Sound reductions of 5 – 10 dBA achieved on many extruders, pelletisers, vibratory sieves and air knives using industrial soundproofing and sound deadening solutions that cost much less than the alternative of fitting acoustic enclosures.

Fan noise. Our company has provided solutions to attenuate noise from numerous industrial fans, from large to medium and small ones. We have successfully treated a very wide variety of extractor fan, achieving reductions of up to 26 dBA. We use various methods to abate / reduce extract fan noise, including acoustic engineering methods and advanced soundproofing / muffling technology. Where there is a fan ‘hum’ or ‘whine’, by using specialist noise cancellation technology we can often provide higher sound reduction than is possible with common types of treatment. For example, we have reduced extractor fan hums and whines by up to 22 – 32 dB using advanced attenuation technology. See fan noise reduction for more examples of our noise abatement measures and services for extraction fans.

Filling machines / lines. We have been able to suppress filling machine noise on production lines in a variety of industries, including for various food and drink companies. Our filling machine technical soundproofing solutions cost considerably less than the alternative of fitting acoustic enclosures.

Food chopper.  A purpose designed silencer was fitted to the material infeed and outfeed ports, reducing noise on a large commercial food chopper by 22 dBA. Our company offers various practical noise suppressing measures that are suitable for the stringent hygiene requirements within the food, drink and pharmaceutical industries. Much of our noise reduction work is for food companies. We also carry out a large amount of noise abatement work for drink manufacturing factories and pharmaceutical companies.

Gearbox. We have reduced gear and gearbox sound by up to 22 dB using minor engineering noise solutions. These cost considerably less than an acoustic enclosure, which is the usual soundproofing solution for gearboxes. Our low cost noise attenuating methods have been successfully applied to many different types of gear and gearbox.

Grader. The noise from several vibratory graders was reduced by 10 – 11 dBA by applying low cost engineering treatment to the production machines in several factories.

Noise Reduction and Control for Bakery Machines

Granulators.  Sound reductions of 10 – 15 dBA have been achieved on many different granulators by designing high performance noise attenuating silencers that avoid the need for expensive acoustic enclosures.

Guillotines. We have been able to abate the noise from many guillotines using engineering sound deadening and other noise suppression methods to muffle the sound.

Hammer mill. A low cost engineering noise solution was used to suppress hammer mill sound by 24 dBA.

Hydraulic noise. A minor acoustic engineering modification was designed for the hydraulic drive on a mixer, reducing the noise by 7 dBA at very low cost. This sound solution can be applied to most types of hydraulic noise problem and a wide range of hydraulic machinery & equipment. It also costs much less than an acoustic enclosure and industrial soundproofing.

Hydraulic pump. Low cost engineering modifications were used to abate noise by 15 – 17 dBA on a hydraulic pump that drives a large industrial mixer. This noise solution was very successful, attenuating the sound from 97 dBA to 80 – 82 dBA at low cost. For more details see hydraulic noise reduction.

Noise reduction service
Information on sound dampening to reduce industrial impact noise

Impacts.  Reductions of 7 – 11 dBA have been achieved on a wide variety of machinery, equipment and types of chute, using a highly durable sound deadening method to reduce impact noise. Because it incorporates a steel impact surface, our noise solution avoids the problems of the soft rubber-like sound deadening materials that are commonly used to reduce impact noise. Soft materials like rubber can quickly wear completely away, whereupon the high impact noise level returns. As they wear, these soft rubber-like materials can also contaminate the product. This can be a major problem on chute and other types of impact surface in a hygienic application such as the food, drinks and pharmaceutical industries. Impact noise is very common in industrial companies and is present in many types of factory. Consequently, we have considerable experience of reducing impact noise in many different factory applications.

Labelling machines. Our noise solutions were used to suppress the sound from several types of labelling machines in the food and other industries.

Reducing Noise in a Workshop

Lathe.  7 – 8 dBA noise reductions achieved on various types of multi-spindle automatic lathe. Also, our noise suppression method achieved 9 – 10 dBA reduction on CNC lathes at much lower cost than acoustic enclosures.

Linisher. Our noise suppressing techniques were used to attenuate noise by 10 – 13 dBA at very low cost on many different linisher machines.

Mixer. On various types of mixer in the food, power generation and other types of industry, we have achieved a noise attenuation of between 6 and 17 dBA using various acoustic engineering methods to muffle the sound.

Motor. Engineering solutions were used to abate motor noise by 6 – 10 dBA on numerous different motors without the need for an expensive acoustic enclosure.

Packaging Lines.  We used various low cost engineering noise control techniques to considerably reduce the noise on packaging lines used to process pharmaceutical tablets. We have applied similar noise suppression measures to packaging production lines in food factories and other industries.

Packing machines. Acoustic engineering solutions have been applied successfully to many packing machines. For example, our specialist noise solution for packing machines at a food snacks company provided 6 – 10 dBA reduction. The installation cost per packing machine was very low.

Paint booth supply and extract fans.  A small modification to the air-flow on each supply and extract fan was used to attenuate the noise inside a paint spray booth, reducing it by 3 – 6 dBA without impairing extraction performance. This sound reduction was achieved at very low cost, without the need for muffling materials.

Pipe noise. A supplier and installer of gas compressors and pipework was spending large sums of money on acoustic lagging / muffling to suppress the noise radiated by the pipes used to carry gas around the plant. We provided an alternative solution that achieved a much higher noise attenuation at considerably lower cost. This avoided the need to fit acoustic pipe lagging. So our solution provided cost savings of about £5000 per site on average.

Pipes. Low cost sound dampening modifications were applied to muffle pipes containing hydraulic fluid, reducing pipe radiated noise by 15 – 17 dBA. Other types of engineering noise control measures have been applied to pipes containing water, sewage and other materials, helping to suppress pipe noise by 6 – 15 dBA.

Reduce Pump Noise

Plastic extruder.  A high performance engineering vibration damping treatment was used to reduce noise by 5 dBA on a plastic extruder. Our engineer carried out the work directly for the manufacturer, and they applied the noise solution to all their extruders of that type at considerably less cost than using acoustic enclosures.

Pneumatic cylinder. On numerous pneumatic (air) cylinders, our engineering treatments were used to reduce the noise by 10 – 21 dBA at very low cost. Pneumatic / air cylinders are a common noise problem in industrial factories.

Press. Engineering noise solutions have produced sound reductions of between 7 and 11 dBA at low cost on a many different types of power press. The common solution to reduce power press noise is to fit an acoustic enclosure over the machine. This is very costly. It also restricts access to the press, so can impair productivity.  Engineering solutions avoid this, and they cost considerably less. The cost savings are enormous, particularly where there are a substantial number of presses.

Press Noise Reduction

Pumps. See hydraulic pumps, above, and vacuum pumps, below.

Sand-blast machines.  4 – 10 dBA noise attenuation on sand-blast machines without the need for an expensive acoustic enclosure.

Sanders. Our noise suppressing solution reduced noise from sanding machines by about 6 – 10 dBA.

Saw. Noise suppression has been carried out on numerous circular saws, reducing noise levels by 5 – 12 dBA at much lower cost than the alternative of fitting an acoustic enclosure. This includes saws used to cut plastic, wood and other materials. Similar low cost noise muffling measures have also been applied successfully to band-saws.

Noise Solution for Shredder

Shredders. We have used low cost noise solutions to suppress sound on many different shredders.

Stitching machine. 5 – 7 dBA sound reduction achieved on numerous stitching machines at very low cost, reducing workers’ noise to below 80 dBA.

Trim extract fan. We achieved 8 dBA noise attenuation by muffling a side trim extract fan at a cardboard manufacturing factory at very low cost, reducing noise at the nearest worker to 81 dBA.

Tablet packaging lines.  In the pharmaceutical industry, we reduced the noise by up to 16 dBA on tablet packing lines using acoustic engineering treatment that cost little to install. Similar practical noise control measures were applied to other parts of the production lines.

Turret Press. Our engineering sound suppression methods have successfully suppressed turret press noise by 4 – 8 dBA at negligible installation cost. These techniques reduce vibration and noise from presses.

Vacuum pump. 7 – 8 dBA reductions achieved on many different types of vacuum pump at much lower cost than using an acoustic enclosure. On some types of vacuum pump our noise suppressing techniques achieved 14 – 15 dBA.

Vibratory Bowl Feeders

Vibratory bowl feeder.  One company received a quote for £50,000 to fit acoustic covers over the vibrating bowl feeders on 5 production lines. They used our industrial noise reduction company instead. Our engineering solution cost just 7% of the acoustic covers, saving the company £46,500.

We used minor engineering solutions to reduce noise on vibrating bowl feeders by 12 dBA – producing a very low cost sound control solution. There are more details of this example on noise reduction for vibratory bowl feeder.

Vibratory deburrer. Sound reduction of 7 dBA on vibrating deburrers, reducing nearest worker’s noise to 83 dBA.

Vibratory conveyor, separator, weigher, feeder, sieve, vibrator. We achieved reductions of 10 – 11 dBA on a variety of industrial vibrator and deburring machinery & equipment, including various types of separator, sieve, weigher, conveyor, vibrators and feeders for powder & other product.

Waste extract fan.  5 – 12 dBA noise attenuation produced on various types of waste extract fan.

Water jet washer  sound attenuated by 20 dBA.

Weigher. Our low cost noise suppression methods were used to reduce multi-head weigher noise by 10 – 15 dBA. Product impacts on multi-head weigher chutes is a common problem. Our high performance, highly durable sound deadening solution has been used to suppress the noise on many multi-head weighers. We have achieved high reductions on many multi-head weighers handling food, plastics, etc., and at much lower cost than fitting an acoustic enclosure or industrial soundproofing.

Wood planer & thicknesser. 8 – 13 dBA reductions achieved on a variety of wood-working planer & thicknesser machines using minor, low cost noise abatement modifications and other practical sound control solutions.

Wood saw. 5 – 8 dBA sound reduction achieved on many types of circular wood-working saw using very low cost noise suppression measures.

Noise Control for Extraction Fans

We have achieved the success shown in the above examples using specialist industrial noise reduction services and solutions that have a very low installation cost. We have solved noise problems for other types of machine, industry, factory and equipment not listed above. For details, to find out how we can help you with a noise mitigation solution, or for a quote, contact us or ring us on 01727 864667.

We reduce noise for all types of manufacturing industry throughout the UK. You can see where we work on industrial noise reduction areas.

The current Control of Noise at Work regulations strongly
emphasise that each UK company must implement noise
control at source to reduce deafness risks, instead of
relying on ear protectors. So, sound control is an essential
element of any programme to comply with the regulations
in all factory and industrial environments where the noise
level is high.

Details of all the options available for industrial noise control at
work are shown in our guide: how to reduce machine noise at work.

Details of sound solutions to control factory, fan and industrial noise

Industry & Machine Type

Our company offers industrial noise reduction services and soundproofing for all types of industry. Below are some examples of manufacturing industries and types of machine for which we have provided sound control services to help the company comply with the UK Control of Noise at Work regulations:-

Assembly machines / lines. An acoustic engineering / noise suppressing technique of ours has successfully reduced noise on many different assembly machines / lines.

Bakery. We have successfully reduced noise on many types of bakery machine. We have worked for bakeries that make buns, bread, crumpets, pancakes and other food products. Our noise suppression solutions are well suited to bakeries as they achieve the stringent hygiene requirements of the food and bakery industry.

Cask and Keg lines – Brewery. Our engineering solution was used at a brewery to suppress noise on several cask and keg lines. The low cost noise solution was installed in a number of breweries.

Chemical: vibrator, feeders, fan, classifier, pulveriser, hopper, furnace, mixers, vacuum pumps.

Component / Product manufacture: coater, printer, slitter, test machine, assembly machine, bowl feeders, compressed air gun, labelling machine, product conveying.

Drinks – Brewery / Distillery: cask and keg line, filler, washer, labeller, bottling line, can dryer, air knives.

Fabrication / Engineering: power presses, extractor fans, paint booths, saws, compressed air guns, vacuum pumps, ovens, turret presses.

Water pump noise solutions

Food industry – General: label machine, frozen and chilled food production line, freezer, dryer, fan, bakery equipment: bread, bun, pancake, crumpet manufacturing lines; production and packing machine, can making machine, pie line, desert production line, filling line, capper, vibrator. Vegetable factory equipment – splitter, washing, cleaning, dicing, slicer, peeler, and puree machine, food processing machine, processor, packaging / packing machines, dicer, ultrasonic cutter, tray wash machines, vibratory feeders, multi-head weigher, conveyors, flow wrapper, product transfer fans / blowers, magnetic lid separator.

Food – Bakery: divider, pan shaker, depanner, packing machine, tray wash, conveyor, pan cleaner, dough mixer, pneumatic exhaust, compressed air jet, vibrators, bread line, bread slicer, bun plant, mixers, cooler, crumpet line, day goods manufacture, packaging machine, divider, vacuum hood, pan stop, pan turner, stacker, pan cleaner, dolly loader.

Food – Sweet Manufacture: vibrating feeder, fan, multi head weigher, bagging machine, wrapper, hopper.

Food tray manufacture: tray presses, trim press, extruder.

Housebuilding products: brick manufacturing machine, tile cutter, tile production machine, packer

Industrial products: Packer, laminating machine, trim extract, mixers, grinder, driers, fans, hydraulic drive, impact noise sources, industrial boiler, fillers, bagging machines, slitter, grinder, extruder, washer, paint booth, conveyors, labeller, hydraulic press, ultrasonic welder, chiller, air condenser, packing lines, oven, presses, air guns, CNC machines, blower, compressor, shredder, finishing machines, printer, coater, sander, assembly machines, bowl feeder, pump, air conditioner, cutter, binder, packaging machines, gluer, vacuum pumps, motors, electrical component inserter, spiral elevator, sieve, hydraulic mixer.

Press Noise Control

Metalworking / Engineering industries: manufacturing / assembly machine, pump, press, auto lathe, ultrasonic welder, CNC machine, mill, guillotine, lid making machine.

Packaging industry: Packaging machine, wrapper, gluer, box maker, printing press, cut and crease machine, fork lift truck, case maker, Bobst die press, corrugated cardboard slitter, shredder, corrugator, cutter, chopper fan, vacuum pump.

Paper Processing: embossing rolls, coater, gearboxes, vacuum rollers, fans, coating line

Pharmaceutical industry: wide range of production and packaging machines, fans, assembly machine, bowl feeders, fillers, tablet compression machine, boiler.

Plastics: blow mould machine, extruder, cyclones, granulator, coating machines, injection moulding machine, grinder, ultrasonic welder, pelletiser, vibratory separator, air knives, shredder, vibrating bowl feeders.

UK noise consultants

Printing: binding line, trimmer, stitcher, feeder, cutter, printer, binder.

Water: blower, pipe noise

Woodworking / Furniture: belt sander, drum sander, saw, edgebander, CNC router, compressor, extraction fans, motor, planer, thicknesser, shaper, pneumatic exhaust, bandsaw, circular saw.

We are industrial noise reduction specialists and reducing noise in industry represents the majority of our work. We have provided successful low cost industrial noise control solutions to a very wide variety of companies and factories throughout the UK. For help with reducing industrial noise, contact us or ring us on the number below.

For help with a noise problem contact us
or call us on 01727 864667