Standard Updates For Liquid Stain Resistance Of Textiles

With the issuance of ISO 23232:2009 in August 2009, and by several national standard institutions (such as BSI) in November 2009,

Based on different surface tension

It is presumed that if we know the degree of fabric absorption, we can get a rough estimate of its stain resistance.

If the liquid remains on the surface of the fabric, there will be no stain.

If it penetrated into the fabric, it is likely to cause contamination.

The system referred to as liquid should be cooled liquid, such as room temperature liquid, rather than warm liquid such as tea and coffee.

Hot liquids can overcome most of the antifouling measures and penetrate into the fabric. Whether they will stain the fabric depends on many factors.

The new standard is based on the DuPont Corporation research and development system for evaluating the anti fouling performance of textile products. The penetration resistance is divided into 0-8 grades, 0 represents no water repellency for pure water, and 8 represents the liquid (water / alcohol mixture) penetration under low surface tension conditions. 8.

The classification is based on the premise that the surface tension should be between 59 DIN / cm (0.059 cattle / M) and 24 DIN / cm (0.059 cattle / M).

The oil proofing methods EN 14419:1999 and AATCC 118 with the same effect depended on the surface tension of 31.5 DIN / cm (0.0315 cow / M) and 19.8 DIN / cm (0.0198 cow / M) grease.

Carry out the above two tests on the same fabric and give 2 grades: one is