Paper and board - Determination of thickness

The thickness of paper and board refers to its length in the vertical direction, usually expressed in millimeters (mm). The purpose of measuring the thickness of paper and board is to determine its quality, strength and suitability. The thickness of paper has a great influence on its use, for example in book printing, thick paper is usually used to make the cover of the book, while thin paper is used to make the inside pages. At the same time, the thickness can also be used to calculate the density and volume of the paper to determine the use and cost of the paper.

Paper and board thickness is usually measured using calipers or Thickness Gauges.

• When using a caliper to measure, the object to be measured needs to be placed on a flat and horizontal surface, and then the two scale plates of the caliper are respectively clamped to the object to be measured so that it is close to the surface of the object to be measured, and then the distance between the two scale plates is read. The distance between them is the thickness of the object to be measured.

• When using a thickness meter for measurement, it is necessary to lay the object to be tested flat on the measuring platform, and lightly press the measuring head perpendicular to the surface of the object to be measured, and then read the thickness value displayed by the instrument.

       Beichao reminds you: When measuring the thickness of paper and cardboard, you should take measurements at multiple different locations to obtain more accurate results. At the same time, in order to reduce errors, it should be avoided to apply excessive pressure or cause deformation of the object to be measured during the measurement process.