Food Production · Acoustic Control
5 dB(A) noise reduction on an industrial vegetable cutter
Hygienic, cleaning-resistant materials eliminated vibrations and noise – without compromising food safety.
Hygienic, cleaning-resistant materials eliminated vibrations and noise – without compromising food safety.
A European food equipment manufacturer needed to reduce the noise from its vegetable cutter designed for large kitchens and restaurants. With a measured level of 79 dB(A), the machine exceeded occupational noise limits for prolonged exposure. The target: a reduction of at least 5 dB(A).
Beyond the noise requirement, strict hygiene standards had to be met – all materials needed to withstand regular cleaning, not release particles, and resist bacterial growth. The solution had to satisfy both acoustic and food safety demands.
Sontech analyzed the machine’s noise spectrum and identified the aluminum housing and the cutter blade housing as the primary noise sources. By applying vibration damping foil to the housing and insulation matting to the blade housing, the target was achieved – all materials were delivered pre-cut and ready to install.
Measurement was performed with Brüel&Kjær type 2230 with octave and third-octave filters. Room 9×8 m, microphone 1.25 m above floor, 1 m in front of machine on table.