| The world’s first metal-in-aluminum foil detector can detect pieces
of iron and stainless steel not only in aluminum evaporated film packaged
foods but also in aluminum foil packaged foods including boil-in-the-bag
food and other convenience meal in a aluminum tray. Unlike the conventional
detectors, the operating sensitively of the detector is affected neither
by food temperature (high-temperature food immediately after packaging)
nor salt concentration in the foods. |
TOK metal-in-aluminum foil detector adopts a new detecting method to
detect the subtle difference of relative permeability (ratio of the flux
density to the magnetizing force) peculiar to each metal. |
The detecting operation can take place after 30 seconds of warming-up
operation (running-in). The new detector has only three sensitivity modes.
Unlike the other detectors, it does not need to adjust the conveyor speed
according to its detection sensitivity |
While conventional metal detectors use powerful magnetic field and X-ray
detectors emit radiation, the new detector operates in the range of audio
frequencies, which is not only safe to operate but also harmless to the
other manufacturing facilities. In addition, the sensor of the detector
is completely covered by the stainless steel box, it is clean and sanitary. |
The new detector requires only very little running cost, as compared
to the expensive replacement parts of X-ray detectors such as a X-ray tube
and a sensor.
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| Flat-belt Type (Aluminum & Non-Aluminum Package) |
| Standard Model |
Wide-belt Model |
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| Chain-belt Type (Liquid food) |
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Test Method
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| Ｔhe metal-in-aluminum foil detector has adopted a new proprietary detection technique whose test principal is based on the difference of relative permeability. When a piece of iron or stainless steel in the package food passes through the magnetic field which is generated with a very weak low-frequency current, the detector detects a very small turbulence of the magnetic field |
Blue: Sensor Red: Tramp Metal |
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