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Working principle of paper smoothness meter

Date: 2021-12-23 06:15
Views: 801
Abstract:


The paper and paperboard are placed on the glass plate, and a specific pressure is applied to produce a semi vacuum, so as to inhale air and make the air pass through the contact surface. The time required for the vacuum degree to change within the specified range is measured. By measuring and controlling the smoothness meter, the time t and vacuum degree s of a certain amount of gas permeating into the unit area are measured

Under a certain vacuum, the time required for a certain volume of air to pass through the gap between the surface of the sample and the glass surface under a certain pressure is usually expressed as S. The higher the smoothness of the paper surface, the longer the air inflow time; On the contrary, if the smoothness is low, the air inflow time is short. (Buick type smoothness tester is commonly used to measure paper smoothness.)

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