Topic
Colorfastness guides: grey scale ratings, washing, rubbing and perspiration tests, ISO and AATCC methods, and shade approval, with fixes for failures.
Colorfastness describes how well a dyed or printed fabric keeps its color, and how much color it passes to other fabrics, when it meets washing, rubbing, sweat, water or light. Start with the overview of colorfastness testing and grey scale ratings, then read the test that matches the complaint: washing, rubbing (crocking) or perspiration. The test method map, fabric testing standards and the Pantone color guide cover methods and shade approval.
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Color fastness to perspiration checks whether a fabric's color changes or transfers when soaked in artificial sweat. The test principle, acid and alkaline solutions, grading, and how to improve results on dark shades and sportswear.
How color fastness to washing is tested with a multifiber strip, how change in shade and staining are graded with grey scales, the main ISO and AATCC methods, and what to do when a fabric fails.
Colorfastness describes how well a dyed or printed textile keeps its color and avoids staining other materials. Learn the main test types, how grey scale ratings work, how to read a report and what to do when a fabric fails.
Rubbing fastness, also called crocking, measures how much color transfers from a fabric to another surface by friction. How the dry and wet tests work, what affects the result and how dyehouses and printers improve it.
An overview of fabric testing for apparel: what each group of tests measures, how the main methods work (including Martindale abrasion, air permeability and UPF), which ISO, ASTM and AATCC standards are used, how to build a test program by product, and how to read a test report.
A reference map of the test methods most often named in garment and fabric test programs: what each family covers, how ISO and AATCC or ASTM methods relate, and why results from different methods cannot be compared directly.
How the Pantone color system is used in textiles: the difference between the graphics and the Fashion, Home + Interiors systems, how to read a TCX code, how lab dips are made and approved against a Pantone standard, light sources, instrumental color measurement, and common mistakes in color approval.