Paper smoothness meter

Applicable Standards

The tester adheres to global benchmarks:

ISO: ISO 5627 (Paper/board), ISO 8791-2 (Plastic Film)

TAPPI: T 555 om-21 (Bendtsen Smoothness)

GB/T: GB/T 456 (Paper/board)

Main Parameters

Working Principle

The tester measures air leakage between the sample and a glass plate under controlled pressure. Higher leakage indicates lower smoothness. Results are expressed in Sheffield Units (ml/min).

Test Principle

Sample Placement: Secure the material on the glass plate.

Vacuum Application: Apply vacuum to draw air through the sample-plate gap.

Flow Rate Measurement: Calculate leakage rate to determine smoothness.

Applications

Used in paper mills, printing houses, and packaging labs, the tester ensures materials meet surface quality standards for coatings, printing, and conversions. Compliance with ISO/TAPPI methods ensures reliable data for quality control and process optimization.

This guide provides technical insights to support informed decisions when selecting or operating paper smoothness testers, ensuring accurate surface quality evaluation.