Home  
  Multisorb  
  Products  
  Onley  
  DNP Packaging  
  Taptone Solutions  
  Sommetrade  
  Toyo-Jidoki  
  FTC Corp  
  Plexpack/Emplex  
    
  What's New  
  Multisorb Quality Policy  
  Enquiry Form  
  FAQ  
  Contact Us  
  Request Literature  
  Customer Satisfaction  






Production Process Inspection

<< back

Technologies

Acoustic technology is used to measure pressure or vacuum in containers that do not have a measurable lid deflection such as beer bottle, coffee bricks and aerosol cans.

The acoustic sensor works by applying a “tap” to the top of each container, then listens to the resulting “tone.” The tap is produced by an electromagnetic pulse which excites the container lid. The lid vibrates at a natural resonant frequency tone based on internal pressure or vacuum. The tone signal is sensed by a microphone, digitally sampled and stored in memory for processing. A digital signal processor (DSP) produces a real-time signal spectrum and calculates the resultant frequency of the tone for that container lid. This frequency value is then compared to user set limits where containers with a frequency response outside these limits are rejected.

<< back


All content Copyright© 2013, All Rights Reserved.
Site By Datum Connect Ltd