The COBB value indicates whether paper, paper board, or corrigated fiber board has the ability to absorb water. A high COBB value indicates the ability to absorb water, a low COBB value indicated resistance to absorbing water.
One can measure Cobb of kraft paper in lab following TAPPI T441 standard.
what is the cobb test value for coated test liner
cobb value/30 minute unit is -- GM/ Sq.Meter.
The standard Cobb value of kraft paper is typically around 60-70 g/m². This value represents the amount of water that the paper can absorb in a specific time frame and is an important measure of the paper's ability to withstand wet conditions.
To check the Cobb value of paper, you would typically use a Cobb tester. This device measures the amount of water that can be absorbed by a specific area of the paper surface in a set period of time. The Cobb value is expressed in grams per square meter (g/m2) and is an important indicator of the paper's absorbency.
wht is the significant of RMS VALUES OF A PARTICULAR WAVE/
Transmitted
Three significant digits.
One.
It has 4 significant digits but only one value.
none