A special paper testing instrument for the water absorption performance of paper. The instrument uses the Cobb test method, so it is also called the Cobb Absorbency Tester. This instrument is mainly used to determine the amount of water absorbed on the surface of sizing paper (wallpaper, etc.) and cardboard under the conditions specified in the standard. Those relatively loose paper (such as news printing paper), unsizing paper (such as blotting paper) and other paper with high water absorption are not suitable for this instrument.

Scope of application

Cobb Absorption Tester is a special testing instrument used to test the surface water absorption of paper and cardboard. It is also called a paper surface absorption weight tester. It is mainly used for paper products such as paper, cardboard, gray cardboard, and special paper. 性assay.

technical parameter

1. Test area: 100cm2±0.2cm2

2. Test water consumption: 100ml±5ml

3. The length of the pressure roller: 200mm±0.5mm

4. Press roller quality: 10kg±0.5kg

5. Working environment: temperature (20±10)℃, humidity <85%

Applicable standards

QB/T 1668 Bore Absorbability Tester

GB/T 1540 Test Method for Water Absorption of Paper and Paperboard (Kibble Method)

ISO 535 Paper and board-Determination of water absorption-Cobb method