What is color fastness to saliva?
What is color fastness to saliva?
Determine the resistance of the colour of textiles regarding influence of saliva. This test must be done for fabrics used for baby / infant garments only.
How do you test colorfastness?
Get a white cloth or face washer. Press the wet part of the garment onto the white cloth. If any color comes off onto the white cloth, you know that the item is not colorfast and will run in the wash.
What are the factors that can control color fastness?
The type of dye, the particular shade used, the depth of the shade and the dyeing process all affect the fastness of a colour. Some coloured or printed garments change colour significantly during use.
What is color fastness to laundering?
PURPOSE AND SCOPE: Colorfastness is the property of a dye or print that enables it to retain its depth and shade through the wear life of a product. The purpose of this test method is to evaluate the degreeof color loss after repeated home launderings and staining of other items in a washload.
What is color fastness to water?
Color fastness to water test. Color fastness to water determines the resistance of textile colors to immersion in water. You might think this test sounds like the washing test. But color fastness to water testing is specifically used to measure the migration of color to another fabric when wet and in close contact.
Which dye is water soluble?
Basic dyes are water-soluble cationic dyes that are mainly applied to acrylic fibers, but find some use for wool and silk. Usually acetic acid is added to the dye bath to help the uptake of the dye onto the fiber….Basic Dyes.
| Basic Dyes | Acidic Dyes |
|---|---|
| Crystal violet | Congo Red |
| Methylene Blue |
What are the factors that may affect the fastness properties of textile?
Cationic compounds applied to dyeing of direct dyes on cellulosic fibres to improve wet fastness can also extent on average influence on light fastness. Environmental factors: Temperature, Relative humidity and atmospheric contaminants are the main environmental factors that affect the light fastness.
How can I increase my color fastness?
Full soaping, washing, minimizing the amount of hydrolyzed dyes and floating color to improve the fabric’s fastness to light, the choice of fixing agent.
What is sublimation fastness?
Sublimation fastness: refers to the migration and vaporization of dye molecules inside the fabric when heated during high-temperature processing or storage of colored fabrics.
What is cationic dye?
Cationic dyes are dyes that can be dissociated into positively charged ions in aqueous solution. They can interact with the negative groups on the fiber molecules to form salts, which can be further firmly attached to the fibers, thereby staining the fibers.
What are water based dyes?
Water Based Dye Stains penetrate deep into the wood to magnify the grain beautifully. They will provide your project with more depth and color vibrancy than any other stain. This product is excellent for highly figured woods like mahogany, walnut, or maple.
What is Colour fastness in textiles?
Colour fastness is a term—used in the dyeing of textile materials—that characterizes a material’s colour’s resistance to fading or running. Colour fastness is the property of dyes and it is directly proportional to the binding force between photochromic dye and the fiber.
What is the color fastness to perspiration test?
The color fastness to perspiration test determines the resistance of textile colors to human perspiration. Fabric dyes and human perspiration can often react and cause color fading in clothing items.
What are the different types of color fastness tests?
In addition to the color fastness to perspiration test, there are common Color Fastness to crocking test, color fastness to rubbing, colour fastness to washing, color fastness to light and so on. Try to grasp the test from the principle, scope, test environment and so on, understand the key of each standard, so as to master the core of the test.
What is color fastness to acid and alkaline?
The color fastness to perspiration (acid and alkaline) refers to the ability not to fade and not to stain when the dyed fabric is perspired, and it is one of the main color fastness testing items of textiles.
What are the effects of poor color fastness?
Poor color fastness can cause fabric shade variation or the staining of other products. Any number of activities associated with regular use can reveal these issues, including: Unlike other types of fabric testing, such as flammability, there are no mandatory legal requirements for color fastness testing.
