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  • Is the child vehicle you bought for your kid safe?
    Is the child vehicle you bought for your kid safe? November 13, 2018
    Many child vehicles are on the market that are unqualified. The problems are mainly happened during normal use and foreseeable abuse. And reasons may lead to the problems are various, including the shape, size, strength, small gears, prominent parts, packaging bags and film, folding structure, accessibility of gaps and mechanical device, stability and overload requirement, operating manual, products marking, anti collision distance and so on. The child vehicles may need to assemble by ourselves, and assemble it correctly according to the manual is a effective way to avoid the danger during use.Besides, we should try those single-function child vehicles, because they always have more scientific and reasonable structure. For those vehicles which are multifunctional, the structure might be too complicated to keep every function and part maintain safe. 1)Child Bicycle. - Choose the bicycle based on kid’s age and height. - Pay attention to the size of handbrake. Children may be not able to stop the bicycle if handbrake is too big to grip. - Do not move the balance wheel optionally during the daily use. - Make sure there is a chain cover on the bicycle, that will protect children from putting their fingers into the chain. 2)Child Tricycle. - Check and make sure there is no any squeeze point that might cause harm before buying. - Width of every gaps on moving parts or between moving parts should be less than 5mm or greater than 12mm, to avoid children pinch their fingers. - Check carefully if these small components of tricycle is safe for children. 3)Baby Carriage. - Besides the solid structure of the vehicle, it is also necessary to pay attention to whether the locking mechanism and the safety device of the carriage are complete and reliable. If there is only a locking mechanism and no safety device, once the locking mechanism fails, it may cause serious injury to children. - Pay attention to whether the height of the seat cushion is appropriate, and whether the shoulder strap, fork strap, cross strap, buckle, seat belt and other devices are firm and reliable, so as to ensure that the child will not fall out of the carriage and get injured because of the failing of seat belt or other devices. - Try not leave the carriage during daily use, in case of something happened. 4)Baby Walker. - The stability, rigidity and frame strength of the product should be considered when choosing the baby walker, especially the locking device, in order to prevent the walker to fold by itself and cause injury because the child jumps in the walker and causing the locking device to loose. - Do not use the baby walker on uneven roads, slopes, stairways, bathrooms, kitchens, near to electrical appliances and other dangerous places. 5)Electric Child Vehicle. - Pay attention to the stability and maximum load of the vehicle. - The maximum speed of the electric baby carriage should be particularly considered. For vehicle with a speed faster than 8km/h, it will be difficult for the...
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  • Test Method for Colour Fastness to Crock
    Test Method for Colour Fastness to Crock November 05, 2018
    Dry and wet colour fastness crock test is mainly used to test the color fastness of textiles, and widely used in the textile industry. Currently, there are different types of wet and dry colour fastness crock in the textile instrument industry. The commonly used color fastness crock tester is electric dry and wet crockmeter and manual dry and wet crockmeter.This article mainly takes the electric dry and wet crockmeter as an example. Scope of Application: The instrument can be used to test the color fastness of colored fabric such as cotton, chemical fiber and blending. Detail of Machine: Crockmeter is used to test color fastness, which may cause color transfer to other surfaces due to friction. The tester gets its name from  "crock", which refers to the transfer of pigment or other substances from the specimen to the dry and wet fabric with rub against each other. The tester includes a base plate and a sample to be tested is fixed on it. Rubbing head can be moved back and forth along the specimen. And rubbing cloth is installed on the test head. The movement of the rubbing head is controlled by crankshaft transmission, and it has a certain load. Dyed fabrics are usually tested using a white standard rubbing cloth. Features of Instrument: Used for dry and wet decolorization test of textile, suitable for regular or periodic test. A.Rubbing head diameter: 16mm; B.Vertical pressure: 9N; C.Electric drive, requiring power supply 220V; D.It is equipped with an electronic counter, which fully simulates the test results of manual friction for 10 times, with high data reproducibility; E.Fixing device with the sample; F.The Fastening rings is made of spring steel clamping, ensuring fast fastening of standard rubbing cloth. 一、The testing of dry colour fastness crock: 1.Put the sand paper on the base of the tester along the length direction of the sample. Then put the test sample on the sand paper; 2.Place the sample holder on the sample to prevent the sample from sliding; 3.Make a square of rubbing cloth to the Rubbing head in the downward direction. The walking direction of the rubbing cloth is parallel to the rubbing direction, and use a special ring is used to cover the rubbing cloth. Note that the ring should not be too low, as this will drag the test specimen. 4.Put the rubbing head down and let it touch the sample. The starting position is to put in front of rubbing head testing route. Shake the handle 10 times back and forth at the speed of one return per second. In this way, the rubbing head will be repeated in the sample 20 times. For the electric crock, set 10 times and start the tester. For other return times, please refer to the requirements. 5.Remove the rubbing cloth, conduct the humidification according to the standard (AATCC) requirements, then contrast the gray scale for staining according to the standard method. For the woollen, fluffing and abrasive samples, once some loose fibers are touched on the rubbing cloth, the rating will be a...
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  • Test Method for Resistance to Flex of Completed Footwear
    Test Method for Resistance to Flex of Completed Footwear October 31, 2018
    Footwear testing--Test Method for Whole Shoes Flexing Shoes Flexing Tester applies SATRA TM92 standard, is used to test the flexing resistance of finished shoes or shoe sole. Test Purpose: It's used to determine its flexing resistance or indicating the cracks of shoe or shoe sole through reciprocating flexing movements. Test Machine: GT-KA01-2 Whole Shoes Flexing Tester Test Standard: SATRA TM92 Apparatus and Materials: a) Swing metal plate, at a rate of 140 cycles per minute. b) Two artificial foot which are adjustable size & position c) Digital counter, has reset function and can be set as required test cycles. d) Angle adjustment device, can adjust to zero (start position) f) The control panel can be used to control the working status of the instrument and set parameter of counter, including ‘START’ button, ‘STOP’ button, manual button, reset button, preset electronic counter. Test specimen: The sample shall be the completed whole footwear after 48 hours of processing without obvious defects. Either one or both of a pair of completed whole footwear. If possible, store the footwear in a standard controlled environment of 20±2℃ and 65±2%RH for 48hours. Test Condition: Bending angle: 30°, 45°, 50°, 60°, 90°( adjustable) Test speed: 50~150/min Test chamber temperature: 23±2℃ Test Procedure: 1)Adjust the eccentricity to achieve the required angle. 2)Clamp the specimen 3)Adjust the position of the front clamp (press block) and secure it presses in the toe of footwear 4)Reset the counter before testing , pre-set the bending cycles to the specified value and boot device to test 5)Observe the change of the whole shoe after reaching the required number of tests. Test report: At each inspection stage report shall be include the number of cycles flexed, types of failure (if any) and a quantified measure of the failure (if possible). Unsplit is qualified, and split is not qualified. The length of the split is expressed in millimeters, if any. The test results for each pair of shoes are based on visual inspection. If one of them is split, the pair of shoes should be treated according to the split.
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  • Air Permeability Tester Using Parameter Analysis
    Air Permeability Tester Using Parameter Analysis October 29, 2018
    Air permeability tester is used for air permeability testing of all flat materials and foam panels. The test range includes paper, airbags, and non-woven fabrics. During the test, the fabric was clamped by the test head and pressed under the clamp arm. When the clamp arm was pressed, the air pump was automatically started, and the instrument was tested according to the set parameters. Specific information as follows: (1)Standards: BS 5636 ,JIS L1096-A,DIN 53887,ASTM D737,ASTM D3574,EN ISO 9237,GB/T 5453,EDANA 140.2,TAPPI T251,EDANA 140.1,ASTM D737,AFNOR G07-111,ISO 7231 (2)Automatic Air Permeability Tester Scope of application: Measuring the permeability of textiles, garments, non-woven fabrics, etc.; the fabric is pressed on the selected test head, the instrument produces a continuous airflow through the specimen, and a certain pressure difference is generated on both sides of the specimen. In a very short time, the system automatically calculates the air permeability of the sample. (3)Technical Parameters: 1.Testing area:5cm2、20cm2、50cm2、100cm2; 2.Testing model: automatic; 3.Testing pressure:10-4000Pa; 4.Airflow:0.1-9999mm/s; 5.Testing time:5-50s; 6.Stop time:3s 7.Total testing time:10-58s; 8.Less pressure:1pa; 9.High pressure:4000pa; 10.Accuracy:±2%; 11.Measuring units: mm/s,cfm,cm3/cm2/s,l/m2/s,l/dm2/min,m3/m2/min and m3/m2/h; 12.Data interface: RS232C, asynchronous, two-way function; 13.The pressure system automatically detects the range and can test large areas of the sample; 14.Powerful suction pump with muffler 15.The instrument can automatically detect the test head area, select the test hole size, and control the fan pumping force; 16.Equipped with calibration test board.
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  • How to solve the problem of cracking pants?
    How to solve the problem of cracking pants? September 19, 2018
    The common problem of cracking of trousers and apparel products is that the tension is large during people's wearing, especially when they are squatting, and they are often in a tortuous state. Many clothing companies have encountered market complaints due to cracked pants and worn pants. So how did this happen? How to control quality? Analysis of the causes of cracking of pants The reason for the cracking of the pants can be attributed to three categories. The first category: the poor of fabric breaking strength and tear strength.The mainly reason is that the clothing companies do not strictly control the indicators of product strength, as long as the strong standards are controlled, they can be avoided.Every clothing companies can test sample all kinds of material in the process of manufacturing finished garments. The second category: poor wear resistance.The breaking strength and tearing strength of this kind of fabric can reach the national standard, but the fabric is cracked after repeated bending and wear of the fabric during the wearing process, but the consumers wear fabric in the process of repeated twists and wear cause the phenomenon of cracking. The most typical denim fabric, its breaking and tearing strength must meet the requirements of FZ/T 81006-2007 "Jeanswear". During the wearing process, the pants fabric is first worn and then cracked, especially the polyester-cotton interwoven jeans which are dealt by resin. The resin dealing causes the abrasion resistance of the fabric to decrease, resulting in serious wear. In addition to jeans fabrics, there is also a class of chemical fiber interwoven fabrics that are easily overlooked by apparel manufacturers. These fabrics all contain chemical fibers. Because the chemical fiber strength is generally high, it will cause an illusion when tested, and the tearing and breaking strength is very high. In fact, this is because of the high-strength chemical fiber support. The strength of the fabric is poor, such as cellulose fiber cannot be reflected. This situation leads to mass accidents that occur during wear.To test the quality of such fabrics, only focus on breaking strength and tearing strength can not be effectively controlled, but also to increase the wear resistance test. The third category: yarn slippage at the seam of the crotch.These fabrics can reached national standards in all aspects,even exceed it. But the yarn can easily slip off the seam, causing cracking. Cracking remedies and precautions In the dyeing production and the washing process of finished pants, a large amount of softener is added in order to improve the feel of the pants. However, this process exacerbates the slippage cracking and need cracking inhibitor to for remedy for that. The cracking inhibitor is a high molecular polymer which increases the surface friction coefficient of the yarn and improves the slip of the fabric. Nevertheless, this method is an after-the-fact remedy, increasing costs, time and effort, and ...
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  • Experiment tells you: Why there is a bonding gap or crack in your shoes?
    Experiment tells you: Why there is a bonding gap or crack in your shoes? September 06, 2018
    Does below situation happens to your new shoes with a bonding gap or sole-crack for wearing within a short time? Just as below pictures: What happens? You might say the quality of the shoes is not so well, so where the problem lies in? The reason why this situation appears is that the the flexing resistance of the finished shoes is a failure. The flexing resistance of finished shoes refers to the finished shoes’ durability for the bending or folding under a certain temperature and certain force. General speaking, it’s a repetition twisting process between human foot and shoes. The test standard for shoes flexing resistance: GB/T 3903.1-2017Footwear,Test Method for  Whole shoe , Flexing Resistance.This test standard is used for test whole shoes and sole, not suitable for the heel excess 70mm, or the part of sole’s flexing more than 25mm,or the finished shoes with strong stiffness. This is Flexing Resistance Tester: The testing principle of Shoes Flexing Tester is to use a cutting knife cut a crack with specified length of whole shoes or sole, then to do the flexing test under certain angle and rate. After test, measure the length of the crack and at the same time, observe the changes of the joints of the upper surface, the sole and the bottom (including the fence and the bottom wall). Move like this: Is it a similar motion when you are walking? Each test should need not less than a pair of whole shoes or sole.  The test bending angle should be (50±1)°, the flexing rate should be (230±10)times/min. The test temperature should be (23±2)℃. Do the test for 40,000.00 circles. As below pictures show: The standard requires the cutting position should be in the middle of the toe flexion of the sole of the shoe, and the sole needs to be cut through. As showed in the pictures: Not all the shoes need the cutting crack in advance, different standards requires different specification. For example: Sneaker (GB/T 15107-2013) It requires not cutting, and it continually bends 40,000 times, the qualified products should not be crack after the bending. The bottom wall, upper bottom the shoe sole should be ≤5.0mm;After folding, the shoe sole shall not have more than 3 cracks, and the longest crack length shall be ≤5.0mm;The sole must not appear Color falling off; air (liquid) cushion should not appear air leakage (liquid) or collapse phenomenon after folding the air cushion shoe. leisure shoe (QB/T 2955-2017) It requires cutting 5.0mm in advance, qualified products require that the length of the cut opening is ≤ 20.0mm after bending. The new crack length is ≤ 5.0mm after folding, and should not exceed 3 places. After the fold, there should be no cracking on the face, cracking or opening the bottom, and is no testing the fold resistance if the shoe size is below 230mm. Natural leather out sole also does not measure wear resistance. Test Results: 1.Number of newly generated cracks and longest new crack length, glue failure length of the bonding part of t...
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  • Hong Kong revised safety standards for toys and children's products
    Hong Kong revised safety standards for toys and children's products August 01, 2018
    Hong Kong has amended its list of standards for safety requirements for toys and children’s products. The new standards will become effective on August 1, 2018. In December 2017 [1], the Hong Kong government launched a one-month public consultation on a proposal [2] to update the list of safety standards for certain toys and children’s products. On April 6, 2018, Hong Kong published a press release announcing [3] an updated list of safety standards for two categories of toys and three categories of children’s products falling under the Toys and Children’s Products Safety Ordinance (Cap. 424 [4]). According to the announcement, these standards are international standards or standards adopted by major economies (for presumption of conformity or demonstration of compliance). On the same day as the press release announcement, Hong King published the list of new standards in the Toys and Children’s Products Safety Ordinance (Amendment of Schedules 1 and 2) Notice 2018 under Number 63 [5] to Legal Supplement No. 2 in the Hong Kong Gazette (Number 14, Volume 22). The new standards will become effective on August 1, 2018. Highlights of the amendment are summarized in Table 1. Stakeholders are advised to comply with the latest safety standards for toys and children’s products for Hong Kong. Gester Instruments Co.,LTD is professionally engaged in production and R&D of physical properties testing equipment. With nearly 20 years experience in research and development,we specialize in providing the total solutions of Toys Testing Equipment, children’s products Testing Equipment.
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  • How to test the bending strength of footwear?
    How to test the bending strength of footwear? July 31, 2018
    Rubber is widely used in shoe industry. Usually, the shoe sole is made of rubber which is more elastic and more comfortable,Quality is of first importance in shoe industry. Only to use good rubber, manufacture can produce the quality shoes which have good elastic and flexing resistance.Therefore,it is important to use the high quality footwear testing equipments to test the shoes rubber property before starting the shoes production process. About Rubber/shoe sole The main problem of rubber sole is that when the rubber can’t meet the required standard, it is easy to cracks and can’t withstand the bending force.To test the flexing resistance of rubber, rubber manufacturers exert flexural forces to the rubber which greatly extend the service life of the rubber.Shoes manufacture should use the footwear testing equipments to test the rubber crack resistance and shoe sole flexing resistance to make sure the quality of footwear. How to test the crack resistance of rubber? Footwear testing equipment is widely used to test the quality of rubber,such ad elasticity,flexibility,etc.GT-KB06 EN Sole Flexing Tester is to determine the bending resistance of rubber.During the test, clamp the sample in the machine, exert bending strength to the sample, it can help to evaluate the flexing degree of rubber. Meanwhile, The machine also helps determine whether the material can survive long periods of bending force. GESTER is specilized in manufacture the testing equipment, providing high quality footwear testing equipment. All of our instruments follow the test standards which is provided by standardization departments. GESTER provides various rubber testing machine,such as GT-KA01-2 Whole Shoes Flexing Tester, GT-KB08 DeMattia &Upper fletester, GT-KB05A ROSS Flexing Tester, etc. For more information on rubber or footwear testing equipment, please contact us.
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