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Colorfastness of webbing

Views:3     Author:Site Editor     Publish Time: 2020-04-20      Origin:Site

In the previous article, we introduced how the color of the webbing came from. Let's take a look at the colorfastness.

 

The colorfastness of the fabric is related to the type of fiber, yarn structure, fabric structure, dyeing method, dye and external force. The color fastness test usually includes light fastness, weather fastness, washing fastness, rubbing fastness, perspiration fastness, etc. Sometimes, according to different textiles or different environments, there are special requirements for colorfastness.

 

Generally, the colorfastness test is the degree of discoloration of the dye and the degree of dyeing of the lining. The color fastness grade is 5 and the light fastness grade is 8. The higher the grade, the better the colorfastness.

 

Sunlight fastness: Sunlight fastness refers to the degree of discoloration of colored fabrics after sun exposure. The test method is to compare the fading degree of the sample after simulated sunlight exposure with the standard sample. The standard sample is divided into 8 levels, the best level is 8 levels, and the worst level is 1 level. Fabrics with poor lightfastness should not be exposed to sunlight for a long time, and should be placed in a ventilated place and dried in a cool place.

 

Washing fastness: Washing fastness or soaping fastness refers to the degree of discoloration of dyed fabric after washing with detergent. Generally, a sample card of grayscale is used as an evaluation criterion, that is, the color difference between the original sample and the faded sample is used for judgment. The washing fastness is divided into five grades, the best is grade 5, and the worst is grade 1. Fabrics with poor washing fastness should be dry cleaned. If you perform wet washing, you should pay more attention to the washing conditions, for example, the washing temperature should not be too high, and the time should not be too long.


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