This is an updated and revised version of a book published by RAPRA in 1985 ‘Noise in the Plastics Processing Industry’. The original version provided guidance to managers and engineers in the plastics industry on ways to reduce high noise levels in the workplace, in order to reduce risk of noise induced hearing damage to employees. Practical methods for reducing noise from industrial machinery in general were described and then illustrated with 25 case studies all relating to plastics processing machines such a granulators, shredders, extruders and injection moulders.
Noise control techniques described include standard noise control measures such as enclosures, silencers and the use of sound insulating, sound absorbing materials, use of vibration isolation and damping. Most of these techniques have not changed since 1985, however one new technique is now available – the use of active noise control methods. The scope of the revised text has been extended to include chapters on environmental noise, European Union machinery noise emission regulations, hearing protection and prediction of noise levels, and the design of quieter workplaces.
A new chapter of case studies has been added which reviews many already published case studies and introduces some new ones.