Crocking refers to the rubbing off of color from a fabric when subjected to abrasion. One test is the AATCC 8-2001. This “is a test method of the American Association of Textile Chemists and Colorists (AATCC). This method uses a standard white cotton fabric that is rubbed against the surface of the test fabric.

What causes Crocking?

Crocking occurs when the dye is physically rubbed off, two fabric rubbed together causing problem. The more color is transferred, the more the fabric "crocks". Crocking is usually more of a problem with dark and vivid colors. Crocking often occurs in heavily dyed fabric, such as raw denim.

What is Crocking in dyeing?

Wet or Dry Crocking is defined as the transfer of dye from the material surface onto another surface due to rubbing. ... The ACT guidlines define crocking as; Transfer of dye from the surface of a dyed or printed fabric onto another surface by rubbing.