Testing device for liquid or waterproof properties of cardboard packaging material, comprises pressurized vessel in which liquid is brought into contact with sample

摘要

The device comprises a pressurizable vessel (3) for receiving the liquid (2) and sample (1), a device for bringing the sample into contact with the liquid and ending contact between the sample and liquid, and a control system (18) for time intervals and applied force for contact between the sample and liquid. A device for exposing a sample of cardboard material to a liquid in order to test for liquid permeability comprises a pressurizable vessel for receiving the liquid and sample, a controllable device for pressurizing the vessel, and a controllable device for bringing the sample into contact with the liquid and removing contact between the sample and liquid. A control system is used to automatically control the contact device so that the sample is brought into contact with the liquid at given intervals and so that a given force is applied to the sample at given intervals. Preferably at least the majority of the time when a force is being applied to the sample coincides with the sample being in contact with the liquid. An Independent claim is also included for a testing method using this device.