The invention discloses a test method of textile printing fastness. The test method comprises the following steps of: carrying out a speedy washing test to draw a conclusion of receiving or not; carrying out a practical family washing test to draw a conclusion of receiving or not; and carrying out a stretching test if the two tests draw the conclusions of receiving; and drawing a final conclusionof receiving or not. The test method of textile printing fastness is simple, practical and suitable for various printing textiles and provides national and international manufacturers and suppliers with an assessment criterion for evaluating the qualities of printing textiles.
The present invention is to provide a textile printing fastness testing methods to address the shortcomings in the market at present there is no uniform standard to evaluate the printing textile printing fastness.
To achieve the above object, the present invention provides a process for testing fastness of textile printing, the test method: accelerated washing test, the conclusion is not accepted or accepted; real household washing test, the conclusion is not accepted or accepted; If these two test results are acceptable, then the tensile test, the final conclusion is accept or not accept.
wherein the acceleration test for washing: The sample was placed into a standard detergent solution and ball jar and washed in a rotating water bath apparatus; washing sample; dried sample; standard - Gray scale for assessing change Evaluation of color change of the sample, the gray scale for assessing staining specimen sample card itself assessed using standard staining was visually assessed physical change of the sample surface, the conclusions are given based on the evaluation results of three accept or not accept. The actual test for home washing: The washing powder and the sample, was placed in a household washing accompany washed with a washing machine; dried specimens; standard - Gray scale for assessing change color change of the sample assessed using standard gray scale for assessing staining Evaluation sample card itself staining specimens was visually assessed physical change of the sample surface, it is given to accept or not accept the conclusion based on the evaluation results of these three. The tensile tests are: the accelerated samples were washed several times stretched real household washing; Visual assessment of changes in the surface of the sample prints, according to the evaluation results of two samples, to give a final conclusion to accept or We do not accept.
In particular, the accelerated washing test comprising steps of: along a sample taken two textile weft cut (150 persons 5mm) X (40 persons 5mm) of the two and the same color printing sample, the long sides of the textile widthwise direction, as a test sample, the other as a control sample; Shi dissolving 4.0 0. Ig standard detergents 1000 persons three 5ml of water, and washed to a concentration of 4g / L of solution; GB / T12490-2007 standard rotary water bath warmed to 40 persons 2 ° C, the solution was washed with Iml of 150 persons, 10 persons having a diameter of 6.0 to 0. 5mm stainless steel beads and the test sample Add GB / T12490-2007 standard stainless steel vessel, the stainless steel container is placed in the rotating water bath apparatus; start running 150 ± 10 min; the test sample removed, washed and dried; Evaluation of discoloration with GB250-2008 Comparative control samples with gray Scale Evaluation of color change of the test sample, by assessing staining GB251-2008 Evaluation test sample card itself - gray staining, surface physical changes visual assessment test sample, based on the three evaluation results are given conclusion accept or not accept.
Further, the detergent is a standard AATCC 1993 WOB Standard IEC standard detergent or a detergent containing no fluorescent whitening agent or ECE standard detergent.
Further, the acceleration start running the test sample was washed, rinsed in water three IOOml twice, for one minute each, to a clean and rinse in running water.
The actual home laundering test comprises the following steps: Take two identical samples and color printing, as a test sample, the other as a control sample; test sample, 2g of persons 21 GB / T 8629-2001 standard 2 persons detergent and laundry placed accompany 0. Ikg GB / T86 ^ -2001 standard drum type washing machine, wash program set to 5A, washed with 5 cycles at a water temperature of 40 3 ° C persons; or, test sample, 2g of 66 persons GB / T 8629-2001 standard detergent and 2 persons 0. Ikg accompany the laundry placed GB / T86 ^ -2001 standard agitator type washing machine, the washing program is set 6B, 40 disabilities 5 cycles at a water temperature 3 ° C and washed using standard mode; then removed and the dried test sample; with GB250-2008 - gray scale for assessing change control sample for comparison in assessing color change of the test sample, by assessing staining GB251-2008 - gray color staining Evaluation test sample card itself, the surface of the test sample was visually assessed physical changes, conclusions are given to accept or not accept standard wash, wherein the detergent is a standard AATCC 1993 WOB evaluation results of the above three or IEC standard detergent ECE or without fluorescent whitening agent Standard detergent, wherein the detergent for standard AATCC 1993 WOB agitator type washing machine, a standard detergent IEC standard detergent ECE or free fluorescent whitening agent and stirred for two kinds of a drum type washing machine.
The actual home laundry test, if only one sample, whichever part of the comparison sample, but must ensure that the test sample and the comparative sample and the same color printing; If the sample is too small, the two samples must be provided.
Further, the drying step is baked at a temperature of 90 persons at 60-80 ° C for 10 minutes, or bake to dry.
The tensile tester comprises the steps of: tensile specimen, the elastic elongation of the sample is determined; if the elastic elongation of the sample is less than 30%, after the actual washing of the sample along the weft family to clipping (150 persons 5mm) X (40 persons 5mm) as a test sample, washing the sample after accelerated as another test sample, were as follows: the test specimen at both ends folded in the longitudinal direction, and each step a slit, so that the distance between two slits 100 persons 5mm, metal rods inserted in the two test samples of a seam, the seam is fixed to the other channel Ikg the hammer, the hammer will be lifted and pulled metal rod for 10 persons 1 second, repeated five times; if the elastic elongation of the sample is greater than or equal to 30%, then the sample was washed with an actual family clipping the weft direction (150 persons 5mm) X (40 persons 5mm) as a test sample, washing the sample after accelerated as another test sample, were as follows: the test specimen ends are fixed to the fixing member stretching, the length of the intermediate portion is not fixed to 100 persons 5mm, the test comp unattached portion stretched to 130mm, repeated five times; and finally, two visual assessment tests Changes in the surface of prints, according to the results of two evaluation test sample, to give a final conclusion accept or not accept.
Further, the elastic elongation of the sample is determined comprising the steps of: clipping along weft textile (150 persons 5mm) samples X (40 persons 5mm), which long side widthwise direction of the textile, the test comp longitudinal direction both ends folded and a seam of each step, the distance between two slits 100 persons 5mm, a metal rod inserted into the seam, the seam is fixed to the other channel Ikg the hammer, the hammer will be lifted metal rod pull , measured between the two slit length reaches 130mm, 130mm not reached, the elastic elongation of the sample is less than 30%; if reaches or exceeds 130mm, the elastic elongation of the sample is greater than or equal to 30%.
The present invention provides a method for testing textile printing fastness, simple, applicable to all types of textile printing, provides a standard assessment The quality assessment of printed textiles for manufacturers and suppliers at home and abroad.
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