Textile manufacturers secretly tell you how much kinds of textile color fastness? - - - - - - Tonda home textiles co. , LTD
Color fastness means dyed products in the process of use or after dyeing, dye or pigment under the influence of various external factors, can keep the original color. Asked about the quality of the dyeing and printing fabric. Because of the dyed color fabric due to the light, in dress and keep sweat, friction and washing, ironing reason Ken color or color changing phenomenon, which affect the appearance of the fabric or clothing aesthetic feeling. Nature or degree of dyeing state variation of available color fastness. Fabric color fastness and types of fiber, yarn structure, fabric, printing and dyeing method, dye types and the size of the external forces. It can be divided into the sunlight fastness and washing and soaping fastness, rubbing fastness, perspiration fastness, iron fastness and sublimation fastness, etc. Sunlight fastness to sunlight fastness is refers to the color of fabric subjected to sun discoloration. Its test method can be used both basked sun basked machine, also can use sun basked will fade degree of the samples after comparing with standard sample, the rating standard has two kinds of wool blue label and gray card, national standard and European standard is divided into 8, 8 best, worst grade 1; American standard is divided into 5 levels, level 5 is best, grade 1 is the worst. Sun poor fastness of the fabric of avoid by all means the sun exposure for a long time, should put in ventilated place order. Generally USES xenon lamp exposure test 24 hours a day. Washing fastness to washing and soaping fastness is dyed fabric after washing liquid washing the degree of color change. Usually adopt gray gradation sample card as evaluation criteria, namely, rely on the same and sample after faded color difference for evaluation. The washing fastness is divided into five grades, level 5 is best, grade 1 is the worst. Washing fastness of the fabric should be dry-cleaned, if wet cleaning, need to double pay attention to the washing conditions, such as washing temperature not too high, the time is not too long, etc. Washing fastness in 2 indicators, with the same change and white cloth color, with white cloth color is divided into cotton, nylon, polyester, wool, acrylic, six kinds of acetate fiber. Test temperature 40/50/60/95 degrees, silk and wool commonly use standard 40 degrees, cellulose fiber with 60 degrees. Friction fastness to rubbing fastness is refers to the degree of dyed fabric after friction rub off, friction can be divided into dry and wet friction. Friction fastness with white cloth dipped in color degree as evaluation principle, is divided into five level ( 1 - 5) Said, the greater the value, rubbing fastness, the better. Perspiration fastness to perspiration fastness is refers to the level after rub off sweat stained with dip dyed fabric. Perspiration fastness because human's sweat composition is not the same, thus is in addition to the separate determination, also combine with other color fastness to review. Perspiration fastness is divided into 1 ~ 5, the higher the level, the better. European standard and gb, perspiration fastness is divided into acid alkali perspiration fastness, perspiration fastness. Iron fastness to ironing fastness is refers to the dyeing fabric in the degree of color change or fade when ironing. The discoloration, fading degree is iron at the same time to judge the other fabric with color. Iron fastness is divided into 1 ~ 5, 5 is best, grade 1 is the worst. Test different fabric iron fastness, should choose good test with ironing temperature. Sublimation fastness sublimation fastness is refers to the sublimation of dyed fabric in the store. Sublimation fastness grading samples with gray card to evaluate the fabric after dry hot hot treatment with degree of color, discoloration, fading, and white cloth is divided into 5 levels, level 1, level 5 is the best. This test is commonly used in disperse dye dyed polyester fabric. Chlorine fastness to chlorine fastness to aim at some bathing suit commonly, because the water containing chlorine inside, make the fabric easily fade. Now city tap water also contains active chlorine, some hospital, hotel supplies need to disinfect with chlorine detergent, so the resistance to chlorine bleaching fastness to higher and higher demands are proposed. Perspiration fastness to light some fabric by testing the fastness to perspiration and sunlight fastness is very good, but in actual use process, especially in the summer, sweat soaked with the sun is very easy to fade, it put forward a new requirement, at the same time, the new standard is produced. Resistance to most of the peroxide fastness of washing powder now add as a kind of peroxide acetic acid and some activator, result in textiles by oxidation in the process of washing and bleaching. So the color fastness of textiles to right oxides have a certain tolerance ability. Normal fabric color fastness, general requirements for 3 ~ 4 grade can meet in need. There are other fastness to weathering, sniffle, fastness to saliva fastness, blisters fastness, dry cleaning, etc. , the fastness of textiles printing and dyeing processing higher and higher demands are proposed.