ZL-9012 COBB Absorption Tester

Features:

Surface water absorption (Cobb) value of paper and cardboard: The amount of water absorbed by the surface of paper and cardboard per unit area under certain pressure and temperature within a specified time, measured in g/㎡. The specific formula is as follows: C=(G2-G1)×100. In the formula: C – Kebo water absorption value; G2 – the mass of the sample weighed after absorbing water; G1 – the mass of the sample weighed before absorbing water. The paper and cardboard absorbency tester is a conventional instrument for testing the surface water absorption of paper and cardboard. It is also called the paper surface absorption gravimeter. This instrument uses the Cobb test method among various absorption test methods, so it is also called the Cobb absorbance tester.

Technical Parameters: 

1. The internal cross-sectional area of the metal cylinder is 100±0.2cm2 (corresponding inner diameter is 112.8±0.2mm), the cylinder height is 50mm, and the contact part between the cylinder annulus and the sample should be smooth.
2. The basis weight of absorbent paper is 200~250g/㎡, and its absorption speed is 75mm/10min. When a single layer of absorbent paper has a basis weight of less than 200-250 g/㎡, multiple layers can be superimposed to meet the requirements.
3. Smooth metal flat roller: The length of the roller is 200±0.5mm, and the mass should be 10±0.5kg.
4. Test water consumption: 100mm±5ml.
5. Dimensions and weight:Dimensions: 480×400×420 (mm), weight: 28kg