How do you do a Crocking test?

To test for wet crocking, the standard fabric is wet before rubbing against the test fabric. After rubbing under controlled pressure for a specific number of times, the amount of color transferred to the white test squares is compared to an AATCC color chart and a rating is established.

What is crock resistance?

The Crockmeter provides a quick and accurate method to determine the amount of color transferred from textile materials (such as fabric, carpeting, yarn and leather) to other surfaces by rubbing. The Crockmeter has also been employed to perform rub abrasion, scuff and / or mar tests on flat specimens.

What is CrockMaster?

Overview. James Heal’s CrockMaster is a crockmeter instrument used to determine colour fastness to wet and dry rubbing. It tests textiles, carpets, laminates, and printing inks, as well as the micro-scratch resistance of lacquers, coatings and painted surfaces. It is available in motorised and hand-operated models.

Why is Crocking important?

Crocking means the transfer of color from one fabric onto another by rubbing. A fabric with poor color fastness would transfer its color easily onto other fabrics, especially to white color fabrics. That is why color fastness to Crocking/Rubbing is especially important in the bag manufacturing industry.

What is a Crocking test?

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.

How do you keep fabric from Crocking?

How To Prevent Crocking–When The Dye From Your Jeans Rubs Off On Everything

Step 1: Fill your washing machine with cold water and pour in a capful of laundry detergent.
Step 2: Stop the washing machine right before the rinse cycle starts.

How do you test for color fastness?

During this test, the lab soaks the fabric in a simulated perspiration solution for 30 minutes under a fixed pressure and then dries it slowly at an elevated temperature. ISO 105 E04 tests for color fastness to both acidic and alkaline perspiration.

What Crocking means?

Will vinegar take color out of clothes?

Alternatively, it’s possible to use white vinegar to remove the color stain. Pour 1 cup of white vinegar into a bucket of cold water, stir thoroughly and then rinse the stained garment. Soak the garment for 15-30 minutes, then rinse through.

What is color fastness to wash?

Colour fastness is a term used in the dyeing of textile materials—that characterizes a material’s colour’s resistance to fading or running. The term is usually used in the context of clothes. In general, clothing should be tested for colorfastness before using bleach or other cleaning products.

What is the difference between dye and pigment?

Colorants are either dyes or pigments. Technically speaking, the difference is that dyes are soluble in the host material—typically water—while pigments are not. Another difference is that dyes do not scatter light and look transparent. On the other hand, pigments do scatter light and, thus, they are opaque (see Fig.

How do you do a Crocking test? To test for wet crocking, the standard fabric is wet before rubbing against the test fabric. After rubbing under controlled pressure for a specific number of times, the amount of color transferred to the white test squares is compared to an AATCC color chart and a rating is…