Determining the venting capacity of bags with a
mobile unit
With the Beumer bag tester, Beumer Group has developed a testing device which is easy to transport and enables users to exactly determine the venting capacity of any type of valve bag – including all paper and plastic layers, and glued areas. The determined parameters can be used to optimise the manufacture of bags or check conformity with specifications.
Bags filled with bulk material are then stacked flat on pallets after being closed. These stacks are only stable if the air has been removed from the bags lying on top of each other. Therefore, the remaining air needs to escape from the filled bags before they are closed. The quicker this happens, the higher the filling capacity. The new Beumer bag tester provides users with important information on the filling behaviour of each bag. This is relevant for the manufacture of bags and filling technology, as well as for transport and logistics.
A pressure-compensated flow control valve on the device constantly increases the volume flow rate until a steady pressure of 50 mbar is reached. With this pressure, the user can read the current volume flow rate, which indicates the air permeability, from the flow-rate meter. A filling spout with inflatable sleeve seals the bag valve during the air flow measurements. The scope of supply includes an additional inflatable sleeve for valve widths of up to 200 mm.
The Beumer bag tester can be easily operated with the digital display unit. Thanks to this feature, the bag tester is quick to use and new users can operate it without much briefing. Beumer Group has designed the Beumer bag tester for mobile use. For this purpose, the device weighs just 14 kg and is housed in a stable hard-top case on wheels.
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