In our daily life, no matter what shoes you are worn, what type of floor is walking. The sudden slip accident would occur often which would cause the injury to people.With recent technological developments, footwear manufacturers are constantly introducing new types of sole materials. The anti-slip index of the shoes is a very important data, which may determine whether the shoes could win the good graces in the international market. At present, footwear slip data is obtained through institutions that meet international standards. BS EN 13287 and SATRA TM144 are the most authoritative standards. Both standards provide a detailed and rigorous description of the test methods and test materials, including: the various materials used as the floor, the way the shoes are in direct contact with the floor (only the forefoot touches the surface to be tested, only the heel contacts the surface to be tested) And the entire sole is in contact with the surface to be tested), the test procedure and the method of obtaining the data (normal force, friction, friction coefficient). GESTER has been committed to the development and production of various types of test instruments in line with international standards. At present, our company has launched the footwear slip resistance tester GT-KB48 for footwear anti-slip test. This machine complies with BS EN 13287 and TM144.Let's take a look of the difference during testing between BS EN 13287 and SATRA TM 144. BS EN 13287 Test Procedure: Step 1)  Firmly install the shoes on the shoe lasts or mechanical feet. Be careful not to have any slippage or looseness; if so, it’s necessary to take anti-slip measures (such as: playing paper towels in the shoes or double-sided tape on the bottom of the mechanical foot) . Apply a suitable lubricant to the shoe, uniform thickness, about 1mm thick, and place the floor material to be tested on the motion test platform. Step 2)  Lower the fixed shoe to the surface to be tested so that the shoe is in contact with the test surface. There are three ways of contact (only the forefoot contact surface, only the rear heel contact surface, and the full sole contact surface). The forefoot contact and the rear heel contact require a 7 degree angle block to allow the shoe to contact the surface at an angle of 7 degrees. The three methods must ensure that the relative movement direction of the shoe and the test surface are opposite and parallel. In order to simulate the scenes in life. Step 3)  After the shoe contacts the surface, apply a pre-plus normal force (50N) in a vertical downward direction, reach a normal force of 500N in 1s and prepare to slide the test platform. The force at this time is called static contact force and arrives. Sliding started within 0.3S after 500N, and the sliding speed during the test was 0.3 m/s. Step 4)  The data between 0.3s and 0.6s after the start of sliding is the measurement interval of the average frictional force, and the length of the m...

A surprising call rings and starts our day!In the morning of March 22nd, we have got a call from Mr. Dai said that he would like to visit, is convenient for us? Of course, we are welcome who came all the way from overseas. Mr. Dai Weifa serve in RevSolution Sdn. Bhd. in Malaysia, a prossonial company set up by a group of engineers who provide up-to-date product quality testing solutions for various industry. At 2:00p.m. Mr. Peng and Nicole Su picked up Mr. Dai at Licheng Hotel and go to office and factory to visit and discuss. "Products of GESTER are fine at competitive price", he said.He is most interested in the Light Fastness Tester and Furniture Testing Machine. Thank you a lot, and looking forward to future collaboration. High technologies, modern high-performance equipment, and experience of work at the market more then 22 years allow us to offer our buyers the precision instrument. Our products appropriate national and foreign standards and satisfies the requirements of the customer. GESTER - Just For Professional Testing!

GESTER Instruments co.,ltd is professionally engaged in production and R&D of physical testing equipment. With many years experience in providing total testing solution, GESTER becomes one of leading companies in testing machine field. With its advanced design technology and philosophy, excellent manufacturing technology and strict quality management system, GESTER succeeds in providing world-class products for well-known testing institutions, cooperating with many international standards organizations and providing all test standard consumables for the laboratory. Our company has our own Research and production base which is authorized by ISO9001：2000, can provide total solution for a series of testing machine.  All of our machines are complied with international standards ASTM、ISO、JIS、AATCC、IWTO、BS、DIN etc. To insure the accuracy and authority of the test results, all products will be calibrated by professional staff from central laboratory before dispatched from factory. Our products are being used by many famous quality control organizations at home and abroad. GESTER GT-KC10A Bally Resistance Flexing Tester has A, B two types grips, and the difference lies in the upper grips. A Type grip is complied with below standard: SATRA TM 55;IULTCS/IUP 20-1; ISO  17694 ; EN 13512 ;EN 344-1 section 5.13.1.3 and annex C;EN ISO 20344 section 6.6.2.8;GB/T20991 section 6.6.2.8;AS/NZS 2210.2 section 6.6.2.8;JIS-K6545. Bally Leather Flexing Tester B Type grip is complied with below standard: ISO 32100 ; DIN53351; ISO 5402-1;GE-24;ASTM D 6182. Since the two clamps are suitable for many standards, the same basic dimensions and different tolerances are taken with smaller tolerances, which are regarded as the same standard. The main difference between two grips is as below: As figures showed, fig.1 for A Type Upper Grip,fig 2 for B Type Upper Grip Both upper clamps consist of two plates, one for ABCFD and one for EGHCF. The main differences between the two upper clamps are: 1.The thickness for A type baffle  ADFE is 4mm. While the thickness for B type grips baffle ABCFD, EGHCF is 4±0.2mm, and baffle L(ADFE) can be added to 8mm regarding the test sample. 2.The horizontal length and vertical height for A type upper clamp ramp CD are both 25mm ( D is the intersection for CF and AD extension). The horizontal height difference between the B type upper clamp surface BC and EF is 22.5±1 mm, and the horizontal distance from the hole core to the acute angle angle F is 23.2±0.2 mm, and the diameter of the hole K is required to be ∮50.0±0.5 mm. 3. The angle between the DF and CF of the A type upper clamp is a radius of 2 mm. B type upper clamp DF is: a plane that is 150 degrees obliquely upward (∠ADF=150°) with the lower surface AD. The plane DF and the inclined plane CF are arcs with a radius of 2 mm.

The necessity of rubber flame retardant With the continuous advancement of technology, rubber products have been widely used in various industries. Wire and cable, rubber rope, conveyor belt, rubber hose, air duct, rubber belt, and rubber products used in the electrical and electronic industry must meet the corresponding national standards in terms of flame retardancy and mechanical properties. The requirements for flame retardant properties of rubber products are also increasing, and the development and application of flame retardant rubber has become particularly important. There are many types of rubber, and various rubbers have different combustion properties. Most of the rubbers have a low oxygen index and a low decomposition temperature, which is easy to burn. Therefore, it has become the main way to prepare flame retardant rubber by researching on rubber burning characteristics, adding flame retardant or improving the burning performance of rubber itself. Several important ways of rubber flame retardant The main way of flame retardant is to slow down the thermal decomposition and block the combustion process. The specific flame retardant routes are as follows: The addition of one or more substances changes the thermal decomposition behavior of the rubber, so that the prepared rubber has a high thermal decomposition temperature and reduces the flammable gas generated by the decomposition. The added substance can generate a non-combustible gas when heated, or produce a viscous substance that is isolated from O2, or can absorb heat when heated, so that the three elements of combustion (combustible, oxygen, reach the ignition point) cannot be satisfied. Add substances that can capture HO·, interrupt the chain reaction, and terminate the flame propagation. Change the structure or properties of the rubber molecular chain, improve the thermal decomposition ability or make itself has flame retardant. Due to the good compatibility between rubber and various additives, the addition of various flame retardants is still an important means of flame retardant modification of rubber.

On 27th January. Mr. Wayne inform me that they will visit our company in February for business communication and see our textile testing equipment. On 26th February. We picked up Mr. Wayne and his colleague from train station.They visit our factory at first. And we answered the question their technician asked. Include GT-C13B Martindale Abrasion and Pilling Tester;GT-C01 Universal Tensile Strength Tester and so on. After that. We had dinner together. What surprised me most was that they asked to eat hot pot as dinner. On 27th February.Mr.Wayne and his colleague visit our office and we have a meeting with them in our meeting room. We gave each other an overview of the company. And in response to recent inquiries about the technical aspects of the machines. At the end of meeting. We prepare a gift for them and we took a photo together. GESTER warmly welcome customer from all over the world visit our company to discuss the business. And we also will continue to improve our services.

Balance is a commonly used equipment in laboratory. How to use balance correctly has an important influence on the accuracy of experimental data. As the precise instruments, if we can operate and maintain it well, then will keep the live of balance. Instrodction 01 Relative terms Peeling device: device that sets the indication value to zero when there is load on the flat scale on the same day. Multi-scale: there is only one scale range, divided into several local scale ranges according to different actual scale values.The local weighing range is automatically determined according to the increase or decrease of the loaded load. For example, the scale range of a certain balance is 0-420g, the weighing range is 0-200g, the actual dividing value of the balance is 0.0001g, and the weighing range is 200-420g, the actual dividing value of the balance is 0.001g. Maximum weighing: the maximum weighing capacity when tare is added is not included. Minimum weighing: when the load is less than that, the weighing result may produce too large relative error. Actual dividing value (d) : refers to the difference between two adjacent indicating values. Calibration scale value (e) : the value in units of mass used for grading the balance and metrological verification. Test score (n) : the ratio of the maximum weight to the test score. 02 scale grade The balance is divided into four grades according to the verified degree value e and the verified degree n. Meanwhile, the accuracy level of the balance also meets the corresponding relationship with e and n, as shown in table 1. Table 1 relationship between balance accuracy level and e and n Note: in the last column of the above table, except for the special accuracy grade balance with e < 1mg, d is used to calculate the minimum weight in place of e. 03 Balance error Different scales have different maximum allowable errors (MPE), and the same scale has different maximum allowable errors in different scales. The relationship between the maximum allowable error and the scale level and weighing range is shown in table 2. Table 2 relationship between the maximum allowable error and balance level and weighing range. Use of balance Application notice： 1. Observe the level device of the balance and check whether the balance is level. Balance of balance can be adjusted by adjusting the foot bolt of balance. 2. After power failure for a long time, start the machine for preheating for 30min. If no power failure occurs, start the machine directly for use. 3. Open the windproof cover of the balance, put it into the weighing paper, and after the indication is stable, press the "clear zero" button to close the windproof cover, and observe whether the indication of the balance is zero. If not, press the "clear zero" button until the indication is zero. 4. Open the windproof cover, put the articles to be weighed on the balance, close the windproof cover, and read the indicator number after the indicator number of the balance is sta...

It was our pleasure to be invited to participate in the India International Leather Fair - Chennai 2019, which is the biggest fair for leather industry in India. In the last exhibition in India, we received many valuable suggestions from Indian customers. Therefore, our technical team not only developed new product to meet the requirements of most Indian footwear / leather enterprises, but also upgraded the hot topic items, such as GT-KB48 Slip Resistance Tester. SATRA TM144 Slip Resistance Tester can be complied with the standard of SATRA TM144, ISO 13287, ASTM F2913, GB/T 28287, and also can provide custom settings for test parameters to fulfill the yours potential needs. This was the first show of below new developed machines. GT-K03 Single Column Tensile Test Machine GT-KA01-2B Whole Shoes Flexing Tester GT-KC10A Bally Resistance Flexing Tester GESTER always focus on customers’ actual demand, providing efficient solutions.For service, please contact with us:marketing@gester-instruments.com

What is the Breaking strength and Elongation at break? Definition: Breaking Strength：In the process of tensile testing under specified conditions, The ratio of the maximum force recorded by the specimen being pulled to the linear density,See ordinate 1 in below picture. Elongation at break: The elongation of the specimen under the action of maximum force, as shown the abscissa 4 in above picture. What is the relationship between them? Breaking strength and elongation at break are two important physical quantities that represent the mechanical properties of textiles or fabrics. The fracture of textiles with a small range of yield belongs to the classical theory of linear elastic fracture mechanics. The fiber in the yarn is affected by various factors in the textile process, which makes the yarn have invisible cracks. When the yarn is woven into the fabric, it will be pulled by certain external forces, and these cracks will be enlarged macroscopically, which will cause the fabric to break or tear. So textiles or fabric rupture strength and the degree of density, thickness of yarn and spinning technology has a direct relationship, and elongation at break is essentially depends on the types of fiber, for the high Young's modulus of fiber its corresponding high elongation at break, second fiber morphology, degree of orientation and crystallization degree also can have a certain effect. The Difference? Perhaps many people wonder: what is the difference between breaking strength and tearing strength?Breaking strength measures the force required to produce a tear in the fabric; and tear strength is the force required to further tear the crack under the external force.Both of them are important mechanical indexes, which are related to each other and different from each other. There are many methods for breaking strength testing, such as the strip method and catch sample method.We will introduce the bar test method, the test standards:ISO13934-1 《Textiles— Tensile properties of fabrics— Part 1: Determination of maximum force and elongation at maximum force using the strip method》 GESTER tensile testing machine for fabric strip method is used for testing mechanical properties of various textiles, such as stretch, tear, top break, constant elongation, constant load, elasticity, seam slip, stripping, etc.And widely used in rubber, plastic, leather, metal, wire, paper, packaging, building materials, petrochemical, electrical, geotechnical materials tensile, compression, bending, bonding, stripping, tearing, breaking, creep test force value, elongation, deformation test. Testing range: 10N, 20N, 50N, 100N, 200N, 500N, 1KN, 2KN, 5KN optional. Test results: Sample from the jaw fracture within 5 mm, as jaw fracture, when finished 5 pieces of sample design, if the value is greater than the smallest jaw fracture "normal" can be preserved, if less than the minimum "normal" should be abandoned, plus a test to get five "normal", if all test results are jaw fracture, sh...