For inspectors, how to improve the accuracy of judgment? AATCC 23, ISO 105-G02 colour fastness burnt-gas fumes. What are the difficulties or points needing attention in testing and judging colour fastness of textiles? What are the difficulties in the testing process? It is determined by an experiment called color fastness to light. The high energy of ultraviolet radiation in particular accelerates the fading of the dye. Follow us on social media to stay on track with the latest news. In day; sun light fall on the fabric surface. To measure the color fastness a blue scale is used. In colour fastness test, sample printed and yarn-dyed products with large pattern cycle or irregular pattern for separative test, and then take the lowest grade as the test result. Color fastness to light is an off line quality assurance system. Sweat is divided into acidity and basicity due to difference of people. Concept of Tearing Strength Local yarns in fabrics tear in residual rent due to concentrated…, Are you looking for insightful, practical and useful textile blogs and forums? [7], Some organizations publish standards for rating the lightfastness of pigments and materials. If the white cloth is heavily stained, it means that the fabric is heavily floated and colour fastness is likely to be unqualified, so they should choose carefully. This means with 40 hours of direct UV light; the fabric showed no fading. Required fields are marked *, Light Fastness Measurement With Microsol Light Fastness Tester | Color Fastness To Light. In the process the chromophoric system of the colorant molecule reacts with the atmospheric oxygen to form a non-chromophoric system, resulting in fading. This allows fabrics to be graded, using a Grey Scale for Change in Colour, for … The typical lightfastness year is 500 hours. Revolution Performance Fabrics is pleased to announce our official outdoor fabric line! For consumers and distributors, is there a simple and fast way to distinguish whether colour fastness is qualified? LIGHT FASTNESS: When conducting this test, the upholstery fabric is exposed to artificial lighting for a longer period of time (approx. AATCC 92, ISO 105, GB/T 5718 colour fastness to ironing and sublimation. Underwear products are not assessed. Most outdoor fabrics are coated with PFC chemicals that bead and repel water. The industry standard for indoor upholstery fabric is 40 hours of lightfastness. What are the reasons for disqualification? The following table is listing suggestive relations of the lightfastness ratings on different measure scales and the relation relative to time in direct sunlight and normal conditions of display: away from a window, under indirect sunlight and properly framed behind a UV protective glass. In the workflow of the Blue Wool test, one reference strip set shall be stored protected from any exposure to light. [9], Lightfastness is measured by exposing a sample to a lightsource for a predefined period of time and then comparing it to an unexposed sample.[2][3][10]. Which colour fastness items must be tested for all textiles? In order to determine the lightfastness of a print, the samples - together with the socalled Blue Wool Scale - are exposed in an ATLAS „Suntester CPS“ or similar appropriate equipment to standard xenon light. Exposing dyed cellulosic material, such as plant-based fibers, to sunlight allows dyes to remove hydrogen from the cellulose, resulting in photoreduction on the cellulosic substrate. Measure the fastness to light with the Microsol light fastness tester: The testing is done step by step. As a result of UV light, the substrate material supplies hydrogen to the colourant molecules, reducing the colorant molecule. For example, Electronic Crockmeter, Perspiration Tester, Light Fastness Tester and so on, which are good helpers for testing colour fastness of textiles. With a 5-year limited warranty, try our outdoor fabric for your next outdoor project! The lightfastness hours rating is usually a measure of color fading for most indoor/ outdoor upholstery fabric. In day; sun light fall on the fabric surface. The testing principle and process of colour fastness testing are generally simple, but sometimes the results of laboratory testing are inconsistent for the same fabric. The reaction causes homolytic cleavage in the chromophoric system resulting the fading of the colourant. In addition: Colour fastness to saliva is generally checked only for infant textile products. Mazharul Islam Kiron is a textile consultant, entrepreneur, blogger and researcher on online business promotion. Thanks for your sharing. [10], The actual lightfastness is dependent on the strength of the radiation of the sun, so lightfastness is relative to geographic location, season, and exposure direction. The values for all Rohleder brand fabrics are at least at level 6. The light fastness tester is a useful tool. TESTEX is one of the leading developers and textile testing equipment manufacturers since 2010, focusing on developing and manufacturing instruments used in textile industry all over the world. These quality problems related to colour fastness have been bothering us, and are also major issue of consumer complaints. When testing colour fastness of this kind of clothing, it should be used as two pieces of clothing to test and evaluate separately. 90 – 110 hours), whereby part of the sample is covered. In grey scale the lightfastness is rated between 1–5. The industry standard for indoor upholstery fabric is 40 hours of lightfastness. Other fabric manufacturers do this by spraying their fabric with the typical C6 compound that will “guard” and “resist” stains. The part of a molecule responsible for its color is called the chromophore. You can decide here whether we can use them. This way straight test results can be guaranteed. AATCC 16, ISO 105-B02, GB/T 8427 colour fastness to light. Later you find that these finishes stop working and disappear? [1][2][10] On ASTM scale the lightfastness is rated between I-V. He is working as a consultant in several local and international companies. When it comes to fabric, this question comes up a lot. The success of the test can be confirmed by comparing the test strip set with the reference set that was stored protected from the light. A colorant molecule with an unsaturated double bond (typical to alkenes) or triple bond (typical to alkynes) acting as a chromophore undergoes reduction in the presence of hydrogen and photons of sufficient energy, forming a saturated chromophoric system. Depending on the quality of the dye, the part of the fabric exposed to light discolors more or less during this time. Colour fastness of textiles (hereinafter abbreviated as colour fastness) refers to the degree of fading for dyed or printed fabrics under the influence of external factors (extrusion, friction, washing, rain, sun exposure, light, seawater impregnation, saliva impregnation, water impregnation, sweat impregnation, etc.)

.

Work, Energy And Power Test Questions, Classroom Objects Flashcards, Fish In Water Idiom, Olympic Gold Medal Value, Yorkshire Terrier For Sale, When Is Fall Break 2020 For School, Buy Jumpstart Booster Box, Coolsense Mattress Full 10 Inch, Dmv Registration Fees, Polyurethane Fabric For Furniture, Superman Prime One Million Vs One Above All, Zucchini Noodles With Shrimp, Bernstein Diabetes Plan, Armor Vienna Sausage, Old School Bodybuilding Clothes, Calories In One Peanut, Sultan Kebab Danville, Ac Odyssey Lieutenants Limit, Mozart Sheet Music, Which Costco Has Strawberry Margarita, Corn Dog Uk, The School Locker Loganholme, Do You Capitalize The Name Of A Field Of Study, A To Z Letters In Different Style Pdf, Acts 26 Nkjv, Revelation 2 Niv,