Paper is one of the indispensable products in our daily lives, and the quality of paper is directly related to printing, writing, painting and other aspects. The smoothness of paper is an important quality indicator, which reflects the smoothness of the paper surface and determines the apparent smoothness of the paper in its free state. The level of smoothness is mainly affected by the appearance structure of the paper, and its measurement is inseparable from a precise instrument - the smoothness meter.
Measurement principle
The measurement of the smoothness index is based on the time required for a certain volume of air to pass through the gap between the sample surface and the glass surface under a certain pressure under a certain degree of vacuum. This process requires a high-precision instrument, a smoothness meter, to ensure the accuracy of the measurement. When measuring smoothness, in addition to the impact of the paper sample's own properties (such as air permeability, thickness, etc.) on the results, the testing pressure and pressurization time are also important factors that determine the smoothness testing results.
Precautions
During the use of the smoothness meter, special attention should be paid to preventing dust from entering the inside of the instrument, because dust may affect the accuracy and stability of the instrument. Therefore, regular cleaning of the instrument is crucial. When cleaning the glass surface, you also need to be careful to avoid scratching the surface and affecting the service life and performance of the instrument.
In addition, the tableting rubber pad is a key component of the smoothness meter and needs to be inspected regularly. Use a magnifying glass to observe whether there are cracks and scratches on the surface of the rubber pad, so that potential problems can be discovered and solved in time. It is recommended to replace the rubber pad every six months or one year to ensure that the test is conducted under constant conditions, thereby ensuring the reliability and consistency of the measured smoothness data.
The use of paper smoothness meter can not only help us understand the smoothness of the paper surface, but also guide the production and selection of paper and improve the quality of paper. When using the instrument, users need to pay attention to the maintenance and upkeep of the instrument to ensure the long-term stability and accuracy of the instrument. Through scientific smoothness testing, we can better understand the quality of paper and provide more reliable support for paper application fields.
