The Exchange Test Method

A-5: Color Change Due To Flat Abrasion(Frosting): Emory Method

Issue Date: 30 Apr 1993

Revision Date: 09/30/2011

  1. PURPOSE AND SCOPE:

    To determine resistance of colored fabrics to changes in shade caused by flat abrasion. Poor dye penetration in fabrics can cause localized color change which may result in customer dissatisfaction.
  2. PRINCIPLE:

  3. REFERENCE:

    AATCC Test Method 120-2009, Color Change Due to Flat Abrasion (Frosting): Emery Method.
  4. APPARATUS AND MATERIALS:

  5. PROCEDURE:

  6. EVALUATION:

    Examine specimen under good lighting condition and classify color change by comparing the Gray Scale for Color Change. Record lowest rating observed for each specimen in accordance with the following scale:
  7. COLORFASTNESS RATING GRAY SCALE
    Grade 5 Equivalent to Step 5
    Grade 4.5 Equivalent to Step 4.5
    Grade 4 Equivalent to Step 4
    Grade 3.5 Equivalent to Step 3.5
    Grade 3 Equivalent to Step 3
    Grade 2.5 Equivalent to Step 2.5
    Grade 2 Equivalent to Step 2
    Grade 1.5 Equivalent to Step 1.5
    Grade 1 Equivalent to Step 1
  8. REPORT:

    Report the color change in terms of grade, as an average for three specimens.
  9. NOTES: