The zipper fatigue tester is used for the reciprocating testing of various zippers by continuously testing back and forth. It aims to test the distance between zippers, loose or connector failure, nap, wear, etc. The zipper fatigue testing machine was used to test the zipper's load pulling. Its principle is the tester of zipper under the action of transverse and longitudinal tension.To test if the zipper can bear the specified number of reciprocating pulling operations. During the test.The zipper's puller is driven at the programmable speed for 30 movements per minute up to the specified number of times.The reciprocating stroke is 75mm; The width of the transverse clamping device is 25mm, the total weight of the longitudinal clamping device is 0.28 ~ 0.34kg, and the distance between the two clamping devices is 6.35mm. Standard： CNS -1083 , BS 3084 , QB/T2171 Application： This test method is suitable for all kinds of zippers. Conditions： Room temperature(23±2℃) Size of sample： One zipper(length≥200mm) Parameter requirements：   1. Speed：30times/min   2. Stroke：75mm   3. Angel of opening and closing：Opening 30°;Closing 60°; Zipper Fatigue Tester Procedure：   1. Switch on the power.Adjust the knob so that the tension clamp device is at a lower position, at the same time the lower indicator light is on.   2. Select the appropriate thickness of the positioning plate to be fixed on the zipper pull head, and fix the zipper pull head under the pressure plate to lock and fix. 3.Firstly fixed the end of zipper(lower end) at point A of the upper clip. Then fixed the head of zipper at two longitudinal clip points D and E. of the upper clip   4. Loosen the upper pincer slightly, pull the end of the zipper upward to make the vertical clamping device G horizontal line parallel to the horizontal plate, then lock the upper pincer A.   5. Loosen the two transverse clips B and C, let the cloth tape at both sides of the zipper fit into B and C fixtures, clamping, and the clamping port is about 5mm from the tooth foot.   6. Adjust the tension of Adjust the tension of the longitudinal and lateral spring balance separately according to the standard.   7. Setting the test times and press the start button to start test。   8. Remove the sample after the number of arrival stops automatically.Observe the degree of sample damage.

Casters testing of Office chair Only High quality swivel chair can withstand three test QB/T2280-2016 Abrasion and Fatigue Test—Standard QB/T2280-2016 Under the load of 113kg, record a reciprocating cycle as one time and do reciprocating motion of the stroke.at least 762mm. whole course of one reciprocating cycle motion for 762mm stroke is more than 1.5m. The test of crossed obstacles for two thousand times and doing reciprocating cycles 98,000 times under obstacle-free conditions, totally 100,000 times for reciprocating motion of 762mm stroke, are equivalent to carrying 113kg of heavy objects and trudged more than 150 kilometers, but five casters of chair without any damage! Impact Test-Standard QB/T2280-2016 Adjust the caster to the most vulnerable state and throwing 120kg sandbag to seat surface from the height of 152mm for 2 times. Then reduce the impact weight to 57kg, impact height to 30mm,repeated impact for 100,000 times. The casters are still very strong under 100,000 times impact test! Drop Test-Standard QB/T2280-2016 Lift the chair to a height of 200mm, the angle between the chair legs and the ground is 10±2°, then doing free fall for 10 times but the leg of the chair must not have any damage or defects for using. GESTER offers a number of furniture testing equipment to perform safety tests for office furniture, mattresses, suitcases as well as indoor/outdoor desks and chairs, thus evaluating their stability, durability, tensile strength, drop resistance, impact resistance, mechanical structure and other properties.

Have you ever slipped on the road or in the bathroom? Do you know why you slip?There are two main reasons : A. For ground reasons                       B. For the material and texture of the sole So, what is the slip resistance of the shoes? GESTER will unveil it for you today. Definition: Static slip resistance refers to the anti-slip ability of an object that is in a static state on the horizontal surface when it is moved. The friction coefficient reflect the anti-slip performance of the shoe. The larger the friction coefficient, the better the anti-slip performance. The coefficient of friction is the ratio of the force required to move an object to the surface of another object and the vertical force between the surfaces of the object. Process: Test method for anti-skid performance of footwear. This standard is divided into dry test and wet test. Dry test means the slipmeter is in a state without water, while wet test means the slipmeter is in a state with water.Using test machine：Static Slip Resistance Tester GT-KB43 Procedure of Dry Test： 1)Scrub the slipmeter with a neutral detergent and test after the slipmeter is completely dry. 2)Weigh the sample by a balance. 3)Fix the back side of the test piece into the sample tank with double-sided tape or glue. The direction of the toe of the test piece is opposite to the direction of the force applied. 4)Place the specimen holder on the friction panel, and the specimen surface to be tested is in contact with the friction panel. 5)Pull the test fixture horizontally and the speed shall be (40±10)mm/mine 6)When the pulling distance reaches 100mm, record the maximum pulling force in the process. 7)Repeat step No.3 to 6 for a total of four times for each location. Rotate the slipmeter 90° in the same direction (clockwise or counterclockwise) after each time. Procedure of Wet Test: Clean the slipmeter with neutral detergent, and spray distilled water or deionized water evenly on the surface of the slipmeter with a manual spraying pot after the slipmeter is completely dried to form a continuous and complete water film. Place the sample on the slipmeter for 30 seconds before testing, repeat the steps of dry procedure. Test Result: The calculation formula of static friction coefficient as below: μ0=F/W In the formula: μ0: Static friction coefficient of test piece. F: The maximum arithmetic mean value of tensile force in four directions of sample. Ｗ: The positive pressure of sample, the unit is Newton (N). Take the arithmetic mean of three samples’test results as final result, accurate to second decimal point. GESTER specializes in research and development and production of footwear testing equipment for more than 20 years. We will provide the most appropriate test solutions to help you to better control product quality with scientific attitude and cutting-edge technology. We have established long-te...

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...

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...

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.

GESTER sales team will stay in Chennai for exhibition during 30th January to 3rd February. We will display the most popular items of leather & footwear testing machines at this event. See below list. GT-K03 Single Column Universal Testing Machine GT-KA01-2B Whole Shoes Flexing Tester GT-KC01-1 IULTCS & Veslic Leather Abrasion Tester GT-KC10A-6 Bally Resistance Flexing Tester GT-KB48 Slip Resistance Tester Moreover, the latest model of GT-KB48 Slip Resistance Tester will be exhibited at this time, which was upgraded on the end of 2018. To know more about it, please visit us at:Chennai Trade Center - Booth: Hall 1C, No.1C-07C+07B Hope to see you in Chennai.

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.