First week of notes after prelim
First week of notes after prelim AM 421
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This 3 page Class Notes was uploaded by Paige Von Almen on Wednesday November 4, 2015. The Class Notes belongs to AM 421 at Colorado State University taught by Yan Vivian Li in Summer 2015. Since its upload, it has received 15 views. For similar materials see Textile Analysis in General at Colorado State University.
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Date Created: 11/04/15
Color and Colorfastness: Importance of Color Consumers purchase clothing because they like the color Color matching of coordinates within a line is important Color loss during wear and care is responsible for large numbers of returns/complaints Color issues are the biggest headache for quality control Does the Color Last? Color retention is critical to serviceability over time Consumers expect colorfastness, or no change in color throughout wear, cleaning, environmental exposure Factors Influencing Colorfastness Chemical structure of fibers Chemical nature of dyes and pigments Penetration of dyes into fabric Fixation of dye or pigments on or in fibers Color Loss or Change During Care Color loss due to water, dry cleaning, solvent, bleach, either chlorine or nonchlorine, application of heat in dryer or during ironing Graying of light colors can be from laundry soil redeposition Colorfastness to Laundering/Bleaching AATCC 61 AATCC 172 for nonchlorine bleach in home laundering AATCC 101 for bleaching Colorfastness to Perspiration AATCC 15 Fabric specimen treatment using an acidic artificial perspiration solution Color Issues Due to Wear Abrasion Crocking Transfer of color to another surface or textile due to rubbing Most common with dark colors, when fabric is damp, with prints, and with pigment color Frosting Loss of color Durable press polyester/cotton frosts due to reduced abrasion resistance of cotton It’s what we expect in jeans Colorfastness to Crocking AATCC Test Method 8 for most textile fabrics AATCC 165 for carpet/AATCC 116 for printed fabrics Crocking is the transferred color from a colored textile to another fabric surfaced through the process of rubbing Color Change During Wear/Environment Colorfastness to perspiration Exposure to ultraviolet light Gas fading atmospheric gases ozone or nitrogen oxide Exposure to water, salt water, chlorinated water Yellowing of white or light colors Change in light reflection rather than color loss, due to age related oxidation or degradgation, accumulated body oils, nitrogen oxides in polluted air Colorfastness to Light AATCC 16 Weatherometer
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