What is Crocking?

In the textile industry, Crocking is a term used to describe the tendency of a fabric to lose color when rubbed. This can happen when there is extra dye present or when the fabric is improperly dyed.

It can also occur due to lack of dye penetration, use of wrong dyes and dyeing procedures, faulty washing and finishing procedures, and other factors.

Crocking is regarded as a serious problem in the textile industry, as it can ruin the appearance of a garment or textile product. It can also be a health concern, as the dye that rubs off can cause skin irritation or allergic reactions.

There are several ways to test for crocking, including the AATCC Crockmeter Test and the SDC Rub Test. These tests involve rubbing a fabric sample with a piece of white fabric and measuring the amount of color transfer.

To prevent crocking, textile manufacturers take care to use proper dyeing techniques and to thoroughly wash and finish the fabric before it is used in a garment or other product. They may also add anti-crocking agents to the fabric to reduce the risk of color transfer.