Beumer Group, Beckum, Germany, has developed the BEUMER Bag Tester, a device which is easy to transport and enables users to determine precisely the venting capacity of any type of valve bag – including all paper and plastic layers, and glued areas. The results can be used to optimise the manufacture of bags or check conformity with specifications.

 

Bags filled with bulk material are 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, any remaining air needs to escape from the filled bags before they are closed. The quicker this happens, the higher the filling capacity. The 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 50mbar 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 200mm. 

 

The Bag Tester can be easily operated with the digital display unit. Thanks to this feature, the device is quick to use and new users can operate it without much prior knowledge. It weighs only 14kg and is housed in a stable hard-top case on wheels. www.beumergroup.com 

 

 

The BEUMER Bag Tester enables users to determine precisely the venting capacity of any type of valve bag; it can be easily operated with the digital display unit (below)