Color Fastness
Date：2016-11-29
Color fastness is
a term used in dyeing of textile materials means resistance of color to
fading, i.e. it refers to the notion of an object having color that
retains its original hue without fading or running. The term is usually
used in the context of clothes. The first known use of the word colorfast was
in 1916.In general, clothing should be tested for colorfastness before
one uses bleach, or another type of strong cleaning product. Light
fastness, wash fastness, and rub fastness are the main ones that
standardized. The light fastness of textile dye is categorized from one
to eight and the wash fastness from one to five. The higher the number
the better fastness is obtained.
Definition of Colorfastness
Definition: Clothing
is colorfast if its colors and dyes do not bleed or run from the
clothing. Clothing should be tested for colorfastness before using any
type of bleach or bleaching solution, or strong cleaning product.
How to Test
To
test for colorfastness, find a hidden seam of the garment or a hidden
spot. Apply the cleaner to the garment and then dab the area with a
clean cotton cloth. If the color removes itself from the garment onto
the cloth, you should not use the cleaning product on the clothing.
