| 摘要 |
Any voids in the divider walls of multichamber packages, and in particular, multichamber tubes, can be detected by applying a potential difference across the divider walls of the package. If there is a void, there will be an arcing of current from one electrode to another with a measurable difference in the potential difference between the electrodes. There also may be a visual and/or audible indication. This change in potential difference can be used to determine the intergrity of the divider walls of the package. In a preferred mode, the electrodes also are the mandrel mold sections that are used for the compression molding of the shoulder and nozzle onto the body of a tube package. In this embodiment the integrity of the divider walls can be determined prior to the forming of the shoulder and nozzle onto the tube body or after the shoulder and nozzle is formed onto the tube body.
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