Paper & Paperboard Surface Smoothness Tester

DESCRIPTION / TECHNICAL SPECIFICATIONS

The quality of a sharp printed image, uniform ink absorption, and a flawless coating application all depend on one fundamental property: the surface smoothness of the paper or board. The slightest variation in smoothness can lead to costly print defects and an unsatisfactory final appearance. We present a precision testing instrument designed to quantitatively measure the degree of surface smoothness, providing you with the vital data to control quality, optimize production processes, and guarantee superior print performance.

This instrument operates using the industry-standard air leak method. A paper or board sample is securely clamped under a controlled pressure against a perfectly flat optical glass surface. The machine then measures the time required for a specific volume of air to pass through the microscopic gaps between the paper's surface and the glass plate. A longer time indicates less air leakage, which means the paper surface is smoother. The result, displayed in seconds, provides a clear, replicable numerical value for smoothness characterization.

With a very wide measurement range of up to 9999 seconds and a high accuracy of 0.1 seconds, this instrument is incredibly versatile for testing a variety of materials, from relatively rough newsprint to exceptionally smooth coated art papers. Efficient operation is supported by a clear digital display and a standard RS232 communication interface. This feature allows for easy data transfer to a computer or Laboratory Information Management System (LIMS) for logging, trend analysis, and digital quality reporting, improving efficiency and reducing human error.

This instrument is a must-have tool for paper mills, printing companies, and packaging manufacturers. It is essential for monitoring the calendering process, selecting the right substrate for a specific print job, and troubleshooting surface-related print quality issues. By controlling smoothness, you are directly controlling the quality of your final product. Make this smoothness tester an integral part of your quality assurance laboratory to consistently deliver products with the highest visual appeal and print quality.