In summer, People is easily sweating. And will appear the embarrassing situation which cause of the clothes was fading because of perspiration.The composition of human sweat is complex.The main component is salt.Sweat is acidic and alkaline due to difference of people. On the one hand. The clothes which unqualified color fastness seriously affects beautiful.Effect wearing. On the other hand. The dye which on clothes will be transfer from textile to human body through perspiration.Dye molecules and heavy metal ions maybe absorb by human through skin. Harm to human health. Therefore, It is necessary that to test the perspiration color fastness of fabric. Perspiration Fastness Tester is widely apply to test the fabric color fastness against sweat,sea water,saliva,water. Combine the sample with the specified lining fabric.After treatment with the test solution. Remove the test solution and sandwiched in the middle of the sample plate. Pressing for a certain time with the specified pressure.Check the color change of sample and fabrics which after drying separately. The current perspiration test method include:GB/T 3922-2013、ISO 105-E04-2013、AATCC 15-2013、BS EN ISO 105-E04-2009、QB/T 2924-2007. Testing Equipment:GT-D09 AATCC Perspiration Tester which match with GT-D10 Drying Oven.

The abrasion of the fabric refers to the phenomenon that the fabric is repeatedly rubbed between the fabrics or with other materials, and the fabric is gradually worn and damaged. The test principle of the abrasion resistance of the textile refers to the ability of the textile to resist abrasion under the action of repeated friction of mechanical force. During the use of the fabric, the fabric will be subjected to various external factors, especially the friction of the objects that are in contact with the surrounding objects, causing the fabric to be worn or damaged to varying degrees, affecting the performance of the fabric. Testing the abrasion resistance of the fabric can improve the utilization efficiency of the textile and is an important indicator of the quality of the textile product. The abrasion resistance test of textiles is to cause the abrasion and wear phenomenon of textiles under repeated mechanical friction to be mainly damaged, lightened, faded, pilling and so on. Textiles for different purposes have different requirements for wear resistance, and the methods of detection are different. There are many kinds of test methods for wear resistance, such as flat grinding, curved grinding, turning grinding, etc. There are two main methods commonly used: Martindale flat grinding method and Taber wear method. 一.Martindale flat grinding method (1) Test equipment: There are many types of fabric flat grinding instruments. At present, the most used in the testing industry is the Martindale Abrasion Tester. Therefore, the flat grinding method is often called the Martindale wear-resistant method. (2) Test principle: a circular sample installed in the sample holder of the Martindale Abrasion Tester, under the specified load, with the plane motion of the Lissajous pattern and the abrasive (ie standard fabric) Friction, the specimen holder is free to rotate about its axis perpendicular to the horizontal plane. The wear resistance of the fabric is determined based on the total number of times the sample is broken. (3) Martindale Test method: During the test, a certain size of the test sample is brought into contact with the standard abrasive under the specified pressure, and the sample is moved relative to the abrasive by the Lisharu trajectory, so that the test sample is uniformly worn in multiple directions. 二、Taber wear method: (1) Test equipment: Taber abrasion testing machine (2) Test principle: pre-grinding 25 turns, the test sample is placed on the horizontal platform of the TABER wear tester, and the two grinding wheels are given a specific pressure pressure on the test piece. The axis of the grinding wheel is horizontal and horizontal. Parallel, one grinding wheel faces outward and the other faces inward, recording all changes of the test piece within a certain period of time. (3) Taber Wear Test method: A sample having an outer diameter of 108 mm and an inner diameter of 8 mm was cut with a cutter. Then attach a hard sticker of the s...

45 Degree Automatic Flammability Tester is mainly used in garment fabric tent fabric, such as decorative fabric flame retardant performance measurement is composed of control system and combustion chamber, the sample is installed in the combustion chamber sample rack, the tilt Angle of 45 fire mouth close to the sample, with the flame returned sample stipulated time, observation sample combustion condition and speed of the spread of flame on the sample, evaluation of ignition and flame spreading performance of the sample. 45 Degree Flammability Tester Testing principle: 1. Combustion intensity and speed test Under specified conditions, the sample is placed at an Angle of 45 degrees, the sample is ignited for 1s, and the time required for the sample to burn upward with flame for a certain distance is used as a measure to evaluate the intensity of the textile combustion. The fabric with surface flapping is used as an additional indicator for the intensity of combustion. 2.Damage area and length test Under the specified test conditions, the textile samples were ignited in the direction of 45 degrees, and the after burning and smoldering time, damage area and damage length of the fabric after combustion were measured. 3.Times of touch with flame test Under the specified test conditions, the textile samples were ignited in the direction of 45 degrees, and the number of times of touch with flame was measured when the fabric was burned 90mm from the lower end of the sample. GESTER 45 Degree Flammability Tester Operational program: 1.Take a sample holder that has been installed from the dryer, place it on the sample rack in the test instrument, pass the sign line through the guide wire hook of the sample rack plate, and then hang a hammer on the sign line just below the guide wire ring to make it taut. 2.The door is shut off test set the timer to zero, press start button, the timer start time, that the flame is in contact with the specimen surface 1 s when the flame burning to hang on the top of the marker of sample, the heavy hammer falling due to line was burn out, the timer stop timing, accurate records chronograph is shown in the burning time of the specimen to light out of the dryer time should not exceed 45 s. 3. During the test, the combustion condition of the sample should be observed. If the combustion is not complete, then should be observed if there is any sign of carbonization or melting on the back of the sample or not.

It needs for twisting when you spinning short fibers into continuous yarns.They keep the aggregate force when they stay together, then gives the strength of yarn. Filament in composite filaments also requires mild twisting. It will be dislodged or scratched in use if they are not tied together. In addition, according to various kinds of applications, plurality of single yarns can be combined and twisted to become plied yarns and cables, to make them keep uniform and stable for sustaining higher load. When at least two yarns twist with different speeds and tensions, or twist with different colors or fancy yarns, they can form fancy yarns. Twisting is a method of bringing bundle fiber, filament yarn, and single yarns together. It can help textile bears force, change and rub in production and in use. And gives textile fresh appearance. 1.Concept of Twist As well as affecting the tensile performance of the yarn, the twist also will affects the diameter, specific volume, softness and stiffness of yarns, affecting the covering performance, heat retention, crease recovery, dyeing rate and permeability of the textile. It also affects the hairiness of the yarn surface. Twist is an important indicator of the structural characteristics of the yarn. In addition to the twist and twist multiplier can be expressed, the twisting direction of the yarn is also important. It  refers to the tilting direction of the yarn when adds twist. There are two types of twist: S-plied(twist to the left) and Z-plied(twist to the right). Most manufactured single yarns are spun with a Z twist.To ply these Z-plied together, they are twist with an S twist to give a balanced plied yarn. 2.Methods of Twist Testing There are 2 commonly testing methods: direct counting method, Untwist-retwist method. The short fibers and plied yarns commonly use the direct counting method, while the spun yarns use Untwist-retwist method. Besides, they are Double untwist-retwist method, Double untwist-retwist method and Sliding method. (1.)Direct counting Fixed the one side of sample,another one at one rotating direction of untwisting.When the fibers in the yarn are completely parallel, and the degree of retraction is the number of turns of the length on this sample. The direct counting method is the basic method. The measurement results are relatively accurate and often used as a criterion for assessing the accuracy of other methods.However, this method is inefficient in operation. If the fibers in the yarn are kinked, the fibers can not easy to become parallel, and the fibers are easy to broken. The direct counting method is generally used to count the number of rovings or plied yarns. For spun yarn, it can be carried out by black and white yarn number method. It means that a black roving and a white roving are used to feed the same yarn to spun the black and white yarn. With the increase of remove twist, the distance will become larger between the black and white on the yarn, and easy to manuall...

Leather tear strength tester is suitable for testing tear strength of all kinds of dermis and synthetic leather materials. It is used to test tear strength of dermis and synthetic leather under external force. Testing machine: Dual column universal testing machine GT-K01 Test steps: 1.Samples were parked in laboratory environment for more than 8 hours. 2.Cutting 3 or more samples with a cutter at least 150 mm above the material edge in the longitudinal and latitudinal directions of the sample, respectively. 3.The two ends of the sample are respectively clamped on the upper and lower fixtures of the tensile tester，attention should be paid when clamping：To make the sample expose the part of the upper fixture and the part of the lower fixture, keep the same. To keep the clamped sample in a vertical state, do not tilt to one side，set the speed of the tensile tester to 200 mm/min. 4.Start the test key of the tensile tester and start the test. When the tension machine tears the sample completely, record the maximum tension value of the tension machine. 5.Each sample is tested at least three times, and the average is taken as the final result. Result judgement: 1.If all of the three values are qualified, the average of the three values is taken as the final result. 2.If one of the three values is unqualified, two more samples should be cut for reexamination. If there is no more unqualified in reexamination, it will be judged as unqualified, and the final result will be the average of the unqualified values of the initial and reexamination. If there is no nonconformity in the reexamination, the final result is the average of all values. 3.If two or more of the three values are unqualified, they are judged to be unqualified and the average of the unqualified values is taken as the final result. Matters needing attention: If the results of several tests are quite different (more than 30%), it is necessary to redesign the samples for testing.

Jeans are popular with consumers because of  their durability, fashion, and universality.However, in recent years, with the enhancement of people's consumption awareness, there are more and more complaints about the quality of jeans, and the most concentrated two aspects are the color fastness and strength.What is the cause of the quality problem of jeans?How to explain it? Washing Color Fastness Tester The testing of washing color fastness is to combined the textile sample with two specified single fiber lining fabrics or a multi-fiber lining fabric, immerse in water, squeeze out water, place it between the two plates of the test device, and withstand the specified pressure. Put the test device with the combined sample into the incubator, keep it at a specified temperature °C for a certain period of time, separate the sample and the lining fabric separately, and evaluate the discoloration and lining of the sample with a gray sample card or spectrophotometer, stained.The equipment used: Washing Color Fastness Tester GT-D07. Perspiration Tester Color fastness of perspiration test includes acid fast and alkali-resistant perspiration color fastness: The principle is to suture the textile sample with the standard lining, and put it in an acid test solution containing histidine at pH (5.5±0.2) and an alkaline test solution having a pH of (8.0±0.2). Dispose of separately in the test solution.After removes the sample from solution, it is placed between the two plates in the test device to be subjected to a prescribed pressure.The device with the combined sample was placed in an incubator and held at (37 ± 2) °C for 4 h. The sample is then unrolled and suspended in air at a temperature not exceeding 60 ° C to dry. The color change of each sample and the staining of the lining fabric were evaluated using a gray sample card or instrument. The equipment used: Perspiration Tester GT-D09. Crockmeter Rubbing Fastness Tester Crockmeter rubbing fastness means the degree of discoloration when the fabric rubs against other fabrics in the dry state.The standard test method is: prepare one piece of (50mm ± 2mm) × (50mm ± 2mm) square white standard cotton rubbing cloth;Then take a sample with a size of not less than 50mm×140mm along the warp and weft directions of the sample.After the sample and the rubbing cloth are placed under the specified standard atmospheric pressure for at least 4 hours,The crock rubbing cloth is placed on the head of the device, and the warp direction is consistent with the running direction of the friction head; then the sample is fixed on the platform of the friction meter, so that the length direction of the sample is consistent with the running direction of the friction head. The friction was started and the running speed was 1 reciprocating friction cycle per second for a total of 10 cycles.Under a suitable light source, the number of stains of the rubbing cloth was evaluated using a gray sample card for assessing staining. The warp...

Among the textile testing equipment, the insolation color fastness tester is relatively conventional, and it is also one of the most concerned of color fastness testing. This testing project is not difficult, but in the practical process, often encountered a variety of problems. Here we will analysis the common problems about national standard, ISO and AATCC color fastness test standard, for your reference. 1.What is the difference between blue wool sample 1-8 and L2-L9? Are they interchangeable? In GB/T 8427 and ISO 105 B02 standard, the blue wool samples 1-8 and L2-L9 have described in detail. They are all made of wool with 8 grades of blue label,The light fastness of each blue label is approximately twice that of the previous one. But they use different dyes and processes. Blue label 1-8 is dyed with eight dyes with different light fastness. Applicable to European exposure conditions specified in GB/T8427 and ISO105 B02 standard. L2-L9 is a kind of raw fiber dyed with two dyes, and the dyed two fibers are made into L2-L9 in different proportions. Applicable to us exposure conditions specified in GB/T8427 and ISO 105 B02 standard. And it is applicable to AATCC TM 16 standard. Therefore, blue label 1-8 and  L2-L9 cannot be mixed, and the test results cannot be exchanged. 2.The light color fastness tester has the relative humidity in the chamber, why is it necessary to calibrate the humidity control standard sample? At present, most of the light color fastness tester can display the relative humidity in the chamber. However, in GB/T 8427 and ISO 105 B02 standard, the humidity in the cabinet is calibrated daily using the humidity control standard. The reason is that the relative humidity in the chamber is not the "relative humidity", but the "effective humidity". Effective humidity is also called the absolute humidity. It is combining the air temperature, the surface temperature of the sample and the relative humidity of the air that determines the moisture content of the sample surface during the exposure process. "Effective humidity" directly affects the light fastness test results of humidity sensitive samples. So GB and ISO standards stipulate that the humidity in the chamber should be checked every day. The humidity control sample is cotton fabric dyed with red azo dye. The use method is as follows: A.Taking A piece of humidity control cloth(no less than 45×10mm) and blue wool standard sample be mounted on a cardboard and placed in the middle of the sample clip as far as possible. B. Expose partially covered humidity control samples and blue wool samples at the same time until the color difference between the exposed and unexposed parts of the humidity control samples reaches level four. C. At this time, the standard blue wool sample is used to evaluate the color difference between the humidity control cloth and the standard blue wool sample of which grade. For example, under the general condition of European standard insolation conditio...

On March 29, 2019, the Hong Kong Official Gazette published the revised Notice of the Toys and Children's Products Safety Regulations, updating the product safety standards in Schedule 1 and Schedule 2. The Ordinance stipulates that no one shall manufacture, import or supply toys or children's products that do not meet the safety standards specified in Schedule 1 or 2. 1. Schedule 1 amended: Repealed  ISO 8124-1: 2014 by ISO 8124-1: 2018; Repealed ISO 8124-1: 2014 by ISO 8124-4: 2014 (A1: 2017); Repealed BS EN 71-3: 2013 + A1: 2014 by BS EN 71-3: 2013 + A3: 2018; Repealed BS EN 71-7: 2014 by BS EN 71-7: 2014 + A2: 2018; Repealed BS EN 71-8: 2011 by BS EN 71-8: 2018; Repealed BS EN 71-14: 2014 by BS EN 71-14: 2014 + A1: 2017. 2.  Schedule 2 amended: Children’s fence: Subtitule ASTM F1004-18 for ASTM F1004-16b; Children´s Cots and Folding Cots for Domestic Use: Subtitute BS EN 716-1: 2017 for BS EN 716-1: 2008 + A1: 2013; subtitute BS EN 716-2: 2017 for BS EN 716-2: 2008 + A1: 2013; Children’s high chairs: Subtitute BS EN 14988: 2017 for BS EN 14988-1: 2006 + A1: 2012 and subtitute BS EN 14988-2: 2006 + A1: 2012; ASTM F404- 18 for  ASTM F404-17; Children paints: repealed BS EN 71-3: 2013 + A1: 2014 by BS EN 71-3: 2013 + A3: 2018; Children’s fence: Substitute ASTM F406-17 for  ASTM F406-15. The new revison will become official on the 1st October 2019.