COLOR FASTNESS TO RUBBING EPUB!
A fabric sample is placed in the crock test machine. The fabric sample is rubbed with a wet and dry cotton cloth. The amount of colour that stains the cotton cloth. Color fastness to rubbing by Crockmeter. 2. IntroductionIntroduction Rubbing means friction. Details on Crock Meter Crocking is a transfer of colorant from the surface of a colored yarn or fabric to another surface, or to an adjacent area of the same fabric, principally by rubbing. How to improve color fastness to rubbing / Crocking Colorfastness: It is the property of colored material to resist changes in any of its color.
|Author:||Miss Cassidy Leuschke|
|Published:||20 June 2014|
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|Uploader:||Miss Cassidy Leuschke|
Dry rubbing cloth is fixed on friction head of tester, and the warp direction of it is in accordance with movement direction of friction head.
Press Start Switch, color fastness to rubbing rub for 10 times in 10s reciprocating movement is mm, vertical pressure is 9Nthen take the dry rubbing cloth off. To do the above operation of dry rubbing cloth repeatedly.
When rubbing is finished, dry it at room temperature.
Rubbing Fastness Test | Color Fastness To Rubbing - Textile Learner
Using gray cards evaluating color fastness to rubbing to measure the staining fastness of above dry and wet rubbing cloths. Definition and Measurement of Perspiration Fastness 1. Perspiration Fastness Perspiration fastness refers to the ability not to fade and not to stain when dyed fabric is perspired.
Sweat is divided into acidity and basicity due to difference of people.
Textiles contact long with sweat has a large impact on some dyes. How to determine the color fastness of a color fastness to rubbing We can check the color fastness of a fabric by running a test.
The higher the number, the better the fastness. Ideally, we want no colour transfer at all. There are some colors like black, Red ,Burgundy ,Navy blue which have poor Color fastness properties because of their chemical structure.
How to Measure Color Fastness to Rubbing and Color Fastness to Perspiration - Testex
Like Black color is a carbon base color and the particle size of carbon is large than the other colors that's why its rubbing properties are poor. Similarly red and blue are in the same case. So to improve the color fastness we add more binder to improve the fastness properties of these colors.
It doesn't mean that we can not achieve the best results with these colors. The required results can achieve but production cost will color fastness to rubbing increase.