What is ISO 9073-2:2016?

The International Organization for Standardization (ISO) plays a crucial role in developing and publishing standards that help ensure product quality, reliability, and safety across industries. One such standard is ISO 9073-2:2016, titled "Textiles -- Test methods for nonwovens -- Part 2: Determination of thickness."

Understanding Nonwovens

Before delving into ISO 9073-2:2016, it's important to have a clear understanding of nonwovens. Unlike traditional textiles woven on looms, nonwovens are made directly from fibers or filaments using various techniques, such as bonding, interlocking, or entangling the fibers together. Nonwovens offer unique properties, including high absorbency, liquid repellency, stretchability, and more.

The Significance of Thickness Measurement

Thickness is a critical characteristic of nonwovens, as it influences their performance and application in different industries. ISO 9073-2:2016 provides standardized methods for measuring the thickness of nonwoven fabrics accurately. The standard covers both low-bulk and high-bulk nonwovens and defines procedures for measuring uncompressed thickness, compressed thickness, and thickness recovery.

The Testing Methodology

ISO 9073-2:2016 outlines two primary testing methods for determining nonwoven thickness: the KES-FB method and the modified Gurley method. The KES-FB method uses a computer-controlled instrument equipped with a load cell and a flat-ended plunger to measure the thickness under specified conditions. On the other hand, the modified Gurley method involves applying a specific pressure to the nonwoven sample and measuring the time required for a given volume of air to pass through it.

Both methods offer their own advantages and limitations, depending on the type of nonwoven being tested, the intended application, and other factors. ISO 9073-2:2016 provides detailed instructions on the equipment setup, testing procedure, calculations, and reporting for both methods, ensuring reliable and consistent thickness measurements across laboratories.

In conclusion, ISO 9073-2:2016 plays a vital role in standardizing the measurement of nonwoven fabric thickness. By establishing consistent testing methods, this standard ensures that nonwovens' thickness values reported by different manufacturers and laboratories are accurate and comparable. Manufacturers and users of nonwovens can rely on ISO 9073-2:2016 to assess product quality, make informed decisions, and meet regulatory requirements effectively.