Paper Absorbency Tester - Technical Literature

Paper Absorbency Tester - Technical literature paper and cardboard absorbency determination method (bofa method) specified by the basic parameters and requirements and designed
.

This standard is suitable for determining the water absorption of various paper or cardboard surfaces
.

However, it is not suitable for accurately evaluating the writing performance
of paper or cardboard.

Surface water absorption (Cobb value): The amount of water absorbed by the surface of the paper and cardboard under a certain pressure and temperature within a specified time, measured in g/m2
.

Test principle Paper and paperboard surface water absorption (Cobb) value: the area of paper and paperboard under a certain pressure, temperature, the surface of the water absorbed within a specified period of time, measured in g / ㎡
.

The specific formula is as follows: C= (G2-G1) ×100
.

Wherein: C-co-bo water absorption value; G2-The quality of the specimen after absorbing water; G1- The quality
of the specimen before water absorption.

The Paper and Paperboard Absorbency Tester is a conventional instrument for the water absorption test on the surface of paper and paperboard, also known as the Paper Surface Absorption Weight Tester
.

This instrument uses the Cobb test method of absorption testing, so it is also called the erectible absorption tester
.

Technical parameters Test area 100±0.
2cm² Corresponding inner longitude 112.
8±0.
2mm Metal cylinder height 50mm Pressure roller width 200±0.
5mm Pressure roller mass 10±0.
5kg Dimensions 480×400×420(mm) Weight 28kg Ambient temperature 15°C-35°C Relative humidity 70RH% Paper Absorption Tester - Technical Literature