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 bon...

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.

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.

The waterproof property of the fabric is mainly divided into the resistance of the fabric to water wetting and the resistance of the fabric to water infiltration. The waterproof property of the fabric is characterized by the grade of water contamination, the grade of resistance to static water pressure, the permeability of water, etc. The testing methods are mainly divided into the dip method (spray method) and the static water pressure method. Common Problems happens during testing Improper operation may affect the results during hydrostatic pressure test. The following situations may affect the test results. To make sure there is no air between the sample and water before clamp the sample, then clamp the sample for test. If there is any air between sample and water, then water can't completely touch with specified test area, finally there will not appear water droplets in some part of the sample area, it will also affect the test result. During the test, try your best to ensure that the edge of the sample clamping device does not leak water and water. If the sample water seepage, leakage, on the edge of the clamping device testing will have water leaking from edge clamping device, sample test pressure can appear unstable phenomenon, it does not guarantee the accuracy of experimental results, will affect the result of the experiment. >>>GT-C26B Hydrostatic Pressure Testing Machine Determination of test end points Hydrostatic test standard, GB/T 4744-2013 textile waterproof performance testing and evaluation of hydrostatic pressure law provisions recorded in the presence of water samples on the third place of hydrostatic pressure value, test the finish for the third water droplets appear. If the test endpoint is not selected correctly during the test, it will have a direct impact on the reading of the experimental results, and the incorrect experimental results will be obtained.>>>GT-C26A Hydrostatic Head Tester for Textile Some special cases are as follows: If a third place water droplets appear on the edge of the clamping device, and leads to the third place drops of hydrostatic pressure value is lower than the same samples of other normal sample minimum, should eliminate this data, supplementary sample test separately, until get the normal experimental results. Under normal circumstances, the specimen edges due to the pressure of the clamping device, the edge of the specimen, prone to damage test, edge may be seeping water, in this case, is the analysis of the experiment test results, analysis of whether there lowest test value is lower than other normal sample, whether to need to supplement samples. In the standard annotations, if appear when the fabric rupture, water jet or compound fabric summon of filling water, record the pressure value, and introduced the experimental phenomena in the report. The above situations should be taken as the test end of the experiment.     How to solve Exception? Hydrostatic test re...

Rubber vulcanized or thermoplastic- Accelerated aging and heat resistance tests- Air oven method 1. Principle: Test pieces are subjected to high temperature and at atmospheric pressure, after which specified properties are measured and compared with those of unaged test pieces.The physical properties concerned in the service application should be used to determine the degree of deterioration but, in the absence of any indication of these properties, it is recommended that tensile strength, stress at intermediate elongation, elongation at break and hardness be measured. 1.1 Accelerated ageing by heating in air In this method, with the low oxygen concentration, the oxygen can’t fully diffuse into the rubber to keep oxidation synchronous, even if the oxidation rate is fast. Therefore, when a sample of the thickness specified in the standard test methods is suitable for using in this method, it may give erroneous results for the rubber with poorly aging resistance. 1.2  Heat resistance test In this test method, the test pieces are subjected to the same temperature as they would experience in service in the stipulated time, then test the appropriate properties and compare with unaged pieces. 2.Apparatus: 2.1 Aging Oven which shall be fulfilled below requirement: Equipped with forced air circulation device, air flow rate 0.5m/s～1.5m/s, the min. Surface area of test piece shall be against airflow to avoid the rate of airflow be interfered. The oven shall be of such a size that the total volume of the test pieces does not exceed 10% of the free space in the oven. Provision shall be made for suspending test pieces so that they are at least 10mm from each other and, at least 50mm the sides of the oven. The temperature of the oven shall be controlled so that the temperature of the test pieces is kept within the tolerances of the specified test temperature; A temperature sensor shall be placed inside to record the actual ageing temperature. No copper or copper alloys shall be used in the onstruction of the heating chamber. Provision shall be made for a slow flow of air through the oven of not less than three and not more than then air changer per hour. Before entering the aging chamber, the air should be heated to within the tolerances of the test temperature specified by the aging oven. The Eligible GESTER Machine: GT-KD01 Aging Oven The other apparatus for rubber properties measurement above mentioned: GT-K01 Universal Testing Machine GT-KD09-LX-A Shore A Durometer 2. Test pieces The test pieces preparation should follow GB/T 9865.1 It is recommended that the accelerated ageing or heat resistance test carries our on the test pieces conditioned as per GB/T 2941, and no on the completed products or sample sheet. The aged test piece will no be required for mechanical, chemical or heat treatment. The number of specimens before and after aging is usually measured in five and should not be less than three. Only test pieces of similar size shall be comp...

Have you ever think about your chair is safety enough? Reports of various safety issues with chair products have become commonplace in recent years. This also effect customers when they are purchasing the furniture, not only concern about the price but also focus on the quality and safety factors, It is understood that the developed countries like the United States and European countries that attach great importance to the detection of furniture. A high-quality furniture product is produced after passing several procedures (many comprehensive tests). Test Standards such as BIFMA X5.1—2017 , EN 1728. So, what’s the role of furniture testing equipment in the company? What kind of test equipment does the manufacturer or the enterprise needed to check the qualified safety of the products? What kind of test that chairs need to do? Generally detected from the following points: Functional test: (using BIFMA X5.1-2017 as an example) 1. Chair seat impact static pressure test. 2. Chair backrest thrust test. 3. Chair armrest pressure test (10 degree pressure test). 4. Repeat the stress test on the front edge of the chair. 5. The chair arm pulls and pulls down the test. 6. Chair stability test 7. Chair caster fatigue test, etc. Performance evaluation:After passing the above test, evaluates the performance of the chair. Security test: 1. The material of the chair is the same as that on the user's manual or quality assurance. 2. The material of the chair is harmful to the human body. 3. When the chair is worn, there is no possibility of scratching or scraping the user. 4. Is it safe to sit in a chair? for example, when sitting only in the front part of the chair, the chair will not lose its balance and so on. 5. Whether the chair is stable when people sit or step on the chair, ie they do not shake. The above is only a brief list for the aspects of a chair that need to be tested. So, what kind of testing equipment that manufacturers are needed for chair test? Here are the brief description of the specific machine for your reference. Chair Armrest Durability Testing Machine: Tests the strength and durability of the armrests, seats or other components by simulating the load on the seat during daily use. Chair Seating and Back Testing Machine: Test the strength and durability of the seat and backrest by simulating the daily use load of the seat. Caster and Base Durability Testing Machine: For use with casters or chair base seats with casters and castors to assess the ability of the castor, chair frame, or seat to withstand the fatigue stress and the ability to move the chair back and forth. Backrest and tilt mechanism durability testing machine: The first test is to assess the chair's ability to withstand fatigue stress and backrest backrest wear. The second test assesses the ability of the tilt mechanism to withstand repeated fatigue due to fatigue and wear. In this way, companies can detect unqualified products based on testing instruments, analyze quality probl...

In the textile industry, in order to ensure the ultimate quality, some equipment is usually used for inspection, such as whether it will be wear-resistant, etc., among which the prominent pilling problem. GESTER Instrument Equipment Co., Ltd. briefly introduces four kinds of textile pilling test normal method. Pilling box method: It is mostly used for balling test with wool fabric or wool-like fabric.Overview of the method: The sample is mounted on a cork cylinder liners and it is optionally turned in a wooden box with a constant rotational speed and cork lining. In the absence of agreement or regulation, it is recommended that the woolen fabric be turned 7200 rolls (i.e. 2 hours) and the worsted fabric inverted 14400 rolls (i.e. 4 hours). The test completes the visual description of fluffing and/or pilling performance. Instruments used: Pilling Box, ICI Pilling and Snagging Tester GT-C18 Random Tumble Method: Method Overview: Take three specimens from each laboratory unit. Take the specimens evenly spaced across the width of the laboratory sample or from three different panels in a garment. Specimens should be staggered in such a manner that no two specimens contain the same yarns. Avoid areas with wrinkles and other distortions. Using the random tumble-up pilling box was subjected to random tumble friction for 30 minutes in a cylindrical test chamber covered with a cork liner and filled with a small amount of grey short-lived cotton. The visual evaluation of the pilling performance was made under the specified light source conditions. Instrument used: Random Tumble Pilling Testing Equipment GT-C19A Compass track method: Method Overview: According to the prescribed method and test parameters, nylon brushes and fabric abrasives or only fabric abrasives are used to frictionally pill the specimens. Take a circular specimen with a diameter of 113mm and the test surface is mounted outward on the chuck. The grinding table is a test method of two materials. The fabric is rubbed with a nylon brush and tested with a standard fabric. After the test is completed, a visual description of the pilling performance is evaluated under the specified light source conditions.Instrument used: Surface Fuzzing and Pilling Tester GT-C16 Martindale Method: Method Overview: Under the specified pressure, the circular sample rubs against the same fabric or standard wool fabric abrasive with the path of the Lisa Ru graphic, and the sample can rotate freely around a central axis perpendicular to the sample plane. After the prescribed friction stage, ratings are visually described.Instrument used: Martindale Abrasion and Pilling Tester GT-C13B At present, there are four types of conventional pilling and snagging test methods for textiles.If you want to know more, get quotes and catalogues, please contact us：info@gester-instruments.com

The US Taber Abrasion Resistance Tester (ASTM D3884 Abrasion Resistance of Textile Fabrics ) is used to interpret the wear resistance of metals, coatings, plate surfaces, coating materials, textiles, leather, and rubber, etc. The first step, Calibrating wheels. A: Rubber-base Wheels Calibration (eg. CS-10, CS-10F, CS-17) (1) A new set of rubber-base wheels must be refaced twice for 50 cycles; (2) If the used wheel is less than 1000 cycles before use, refaced 25 cycles or 50 cycles (recommended refaced 25 cycles); if it is greater than or equal to 1000 cycles, pre-refaced 50 cycles. (3) For every 1000 cycles of the wheel during the test, 25 or 50 rotations must be refaced.   B: Vitrified-based wheels Calibration ( eg. H-10, H-18, H-22, H-38) Not need to refacing unless the surface of the wheel is are marred or chipped; every 300 cycles, clean particles using an air hose durinf the test. Sampling: 150mm*150mm, 5 pieces (actual sampling 100cm²), for samples with width less than 125mm, the entire width for samples is used. The second part of the United States Taber Abrasion Tester, the specific operation: 1.Set the appropriate grinding wheel and load as required. Grind the fabric to a specific end point and record the final number of revolutions; the end point may include Pass/Fail criteria, such as: loss in breaking strength, yarn breakage, coating/gloss/gloss loss, appearance of pilling and other changes; if the customer Have their own requirements, according to customer requirements as the end. 2.Recording the number of sample rotations and take the average of 5 samples. End point judgment: Woven fabrics: break a single line Non-woven: Frayed at least 0.5mm in diameter Knitted fabric: 1 yarn broken, forming a hole Fleece: Flue finish references: 2007 and previous versions: Grinding wheel: CS-10 Load:> 240g/m2, 500g/rev ≤ 240g/m2, 250g/rev 2009 Edition According to use table ASTM D3884: Test of Friction Wheels and Heavy Hammer Loads, 2009 Edition Type of fabric Grinding wheel Load (g) Textile fabrics ≥100g/m2<240g/m2(medium) CS-10 500 Textile Fabrics <100g/m2 (Lightweight) CS-10 250 Fleece CS-10 500 Coated fabric H-18 1000 Automotive Fabric CS-10 1000 Decorative fabric H-18 500 Textile Fabrics (Other) H-18 1000 Non-woven fabric H-10 (Temporarily absent) 250 Automotive Leather CS-10 1000 Dyed Leather CS-10 500 Other durable leather H-18 1000 Car carpet CS-10 1000 Carpet (wide) H-18 500 US Taber Abrasion Tester Principle: An "X" type of friction is created by the rotation of a pair of friction wheels.