IGT Cobb Sizing Tester

For Determining the Absorbancy of Liquids by Paper and Boards

Determines the absorption of liquids, such as water, aqueous solutions, oils, varnishes and others, by paper, cardboard and corrugated cardboard from the top and bottom sides within a predetermined time.

Standards: ISO 535, Scan P-37:77 Scan P12, Tappi 441 and Fefco nr. 7

Different types of Cobb testers are available:

For substrates up to 15 mm thickness, such as massive board, or corrugated board
For plaster board construction panels, up to 22 mm thickness
A special version is available for light structured papers (e.g. tissue). This can also be used for paper and board
An additional option to the standard model is also available, which measures the absorption curve until the liquid passed through the substrate

Operation
An electronic stopwatch is mounted on the base plate. The cylinder support is connected to a crank handle and rotates in the block, resulting in a flip-over of the container. The test liquid is located in the cylinder support and can easily be accessed and changed.

A hinged lid is mounted on the cylinder support and secured with a locking mechanism. When the ring is rotated, by moving the handle a signal is sent to the stop watch to start timing. The absorbency test has now started and at the end, a signal is given by the stopwatch, the ring is moved backwards, and a final signal is sent to the stopwatch to finish timing.

The tension of the locking spring enables paper and cardboard of different thicknesses to be tested.

Different versions of the tester are available for standard paper and board, tissue and other low structured materials, corrugated board and for non-standard sample sizes.

Weight: 5.0 kg
Inner diameter of the cylinder: 112.8 mm
Test area: 100 cm²
Filling volume: 100 ml