Capsule lining
Soundproof enclosures and soundproof housings prevent sound propagation directly at the noise source. Employees working on the encapsulated machine are therefore exposed to considerably less noise. The effectiveness of the enclosure is largely determined by the sound insulation (weight) of the enclosure wall, the decoupling of the enclosure from the noise source and the degree of absorption of the sound-absorbing lining inside the enclosure.
A noise source that is enclosed by an enclosure is amplified by reflections from the enclosure wall. To prevent the openings in the enclosure, for material flow, ventilation etc., from emitting this increased noise, the enclosure must be lined with sound absorption material. This should be matched to the frequency range of the noise source. The sound insulation of the capsule is only as good as the absorber used.
