What is EN ISO 105-E12:2006?

EN ISO 105-E12:2006 is a technical standard that specifies a test method for assessing the colorfastness of textiles, specifically those which are subjected to rubbing and/or transfer of color. This standard is commonly used in the textile industry to determine the resistance of dyed or printed textiles to dry or wet rubbing.

Importance of Colorfastness Testing

Colorfastness testing plays a crucial role in ensuring the quality and durability of textiles. It helps manufacturers and consumers determine how well the colors of fabrics or garments will withstand everyday wear and laundering processes. The test results provide valuable information about the potential for color bleeding, staining, or fading, which can help in making informed decisions about fabric selection and care instructions.

The Testing Procedure

The testing procedure outlined in EN ISO 105-E12:2006 involves using a specified sample of the textile material and a rubbing cloth. The two surfaces are rubbed against each other with a specified amount of pressure and for a defined number of cycles. After the rubbing process, the color change on both the rubbing cloth and the sample is evaluated based on predetermined grading scales.

The color change is assessed visually by comparing the rubbings with a set of standardized gray scales. These scales represent different levels of color transfer or change, ranging from no color transfer to significant color loss. Based on the observations, the colorfastness rating is determined.

Interpreting the Results

The results obtained from colorfastness testing according to EN ISO 105-E12:2006 are typically reported using a numerical scale, such as a rating from 1 to 5, with higher values indicating better colorfastness. The ratings provide information about the level of color transfer or fading, allowing manufacturers and consumers to make informed decisions about product quality, usage, and care.

For example, a rating of 4 or 5 signifies excellent colorfastness, indicating that the color is likely to remain unchanged during normal use and laundering. On the other hand, lower ratings indicate varying degrees of potential color change, with a rating of 1 suggesting severe color bleeding or fading.