The whole shoe flexing test is a vital performance indicator that influences the service life of finished footwear. Crack formation, sole separation and upper crease damage will occur when footwear undergoes repeated bending during daily walking activity. After long‑term flexing movement, the shoe structure becomes impaired and visually defective. For these reasons, accurate and reliable flexing testing is critical for footwear quality control and performance verification. The ISO 24266 whole shoe flexing test serves as a standardized procedure for determining flexing durability of complete footwear. It delivers practical and repeatable test performance. This article shares flexing tester for whole‑shoe flexing testing complying with ISO 24266. What Is the Whole‑Shoe Flexing Test ISO 24266 ? The whole shoe flexing test under ISO 24266 applies to finished footwear including sports shoes, casual footwear, work safety shoes and many other shoe types. The footwear specimen is repeatedly flexed through a specified angle about its normal flexing line by a test machine. After a predetermined time or number of flexes the footwear is subjectively assessed forsigns of damage. This document specifies two test methods for the determination of the flexing durability of whole shoes. The two methods might not give comparable results. Method A A means of firmly clamping any type of footwear at the heel and toe. A number of toe clamps will be necessary to ensure all sizes of footwear can be clamped securely. A system of flexing the footwear about its flexing line at a rate of (140 ± 10) cycles per minute through a range of flexing angles. A means of recording either the number of flexes or the duration of the test providing the speed of the machine is constant and known. 5.1.2 Vernier callipers, to an accuracy of better than 0,02 mm. Method B The flexing angle can be adjusted between 0° to 55°. The flexing frequency can be adjusted between 100 cycles to 300 cycles per minute. Sample holder shall be able to fasten the sample firmly to ensure it will not loosen during test. The inclination angle of sample holder is adjustable to make sure test sample can be under normal condition without flex in any directions when the machine is at the minimum flex angle. Which Machine Is Suitable For ISO 24266 Whole‑Shoe Flexing Test? GESTER provides two series of whole‑shoe flexing testers for ISO 24266 compliance: Whole Shoes Flexing Tester GT-KA01-2 and Shoes Flexing Tester GT-KA01-3. GT‑KA01‑2 Whole Shoes Flexing Tester supports ISO 24266 Method A. This tester features acrylic noise‑reduction safety cover and low‑friction linear‑slide heel fixtures with touch‑screen control interface. It fits sports shoes, casual footwear and safety‑protection shoes. GT‑KA01‑3 Shoes Flexing Tester complies with ISO 24266 Method B. Each clamp station is equipped with cooling fans to prevent thermal property shift of footwear materials under continuous high‑speed flex cycles. It is widely adopt...

Welcome the South Korean Customer to GESTER Recently, a customer from South Korea paid a special visit to the GESTER manufacturing base for an on-site inspection. The high-quality testing equipment and services, solid corporate strength and promising market prospects are the major drivers behind this visit. With nearly 30 years of experience in the R&D and manufacturing of physical and chemical testing instruments, GESTER is a professional manufacturer in the industry. Our product portfolio covers textile testing equipment, footwear testing equipment, furniture testing equipment, paper and packaging testing equipment, PPE (Personal Protective Equipment) testing equipment, children’s product testing equipment and more. Our instruments comply with globally recognized standards including ISO, ASTM, DIN, EN, GB and JIS. We serve customers in over 100+ countries and regions worldwide. GESTER is also an approved supplier for international third-party testing laboratories such as SGS, BV and Intertek, and has passed supplier audits for renowned enterprises including IKEA, BATA and Apple. During the visit, the Korean delegation toured our production workshop, finished product showroom and calibration laboratory one after another. Our technical specialists demonstrated a range of precision instruments required by the customer, including the Automatic Feather and Down Filling Power Tester GT-C43B, Automatic Air Permeability Tester GT-C27 and Sweating Guarded Hot Plate GT-C98. We elaborated on hardware configurations, software functions, factory calibration procedures and our OEM/ODM customization capabilities. The customer observed the equipment in operation up close and spoke highly of the testing accuracy and build quality of the instruments. Based on their actual testing requirements, the Korean side raised questions concerning equipment selection, standard compliance, lead time, after-sales maintenance and calibration certificates. Our professional team delivered a tailored full-set testing solution aligned with applicable test standards for the South Korean market, and addressed all their concerns regarding bulk supply, local technical support, CE certification and calibration certificates. The Korean customer commented that he has long recognized GESTER’s comprehensive strengths in testing instruments. This on-site visit allowed him to witness our complete R&D and production system firsthand, building strong confidence for future projects. He looks forward to establishing a long-term, stable partnership with us. Upholding the development philosophy of innovation and exploration, GESTER has long been committed to expanding overseas markets. Supported by reliable product quality, comprehensive standardized solutions and a global after-sales network, we have won recognition from customers across the globe. This visit further consolidates GESTER’s business footprint in the South Korean market. Moving forward, GESTER will keep refining our pr...

Abrasion testing uses standardized abrasive media to evaluate wear‑resistance performance of rubber, elastomers and polymer materials. Understanding DIN abrasion tester versus Taber abraser is important as both follow totally different operational principles and test mechanisms. In this article, you will learn the benefits and pitfalls of DIN abrasion tester versus taber abrasion tester and why the use of one is better than the other for different rubber and material test projects. What is DIN Abrasion Tester? The DIN Abrasion Tester GT‑KB03 is the industry‑standard physical testing apparatus engineered to evaluate the wear resistance and volumetric mass loss of vulcanized rubber, elastomers, footwear outsoles, tires, and polymer sheets. It features a precision 150 mm rotating drum wrapped in P60 abrasive paper, together with an automated digital cycle counter that stops automatically once testing completes. Regarding cost, this tester is sold ready‑to‑use from stock, helping laboratories cut extra preparation lead‑time. What is Taber Abrasion Resistance Test Machine? The Taber Abrasion Resistance Test Machine GT‑C14A is a compact single‑station rotary‑platform abrasion tester. It drives two calibrated abrasive wheels against a rotating sample to create an X‑pattern wear path, perfectly simulating multi‑directional surface friction. This tester combines flexible load adjustment and interchangeable abrasive wheels to assess surface wear performance across a broad range of flat materials including rubber, leather, textiles, plastics and coated surfaces. Understanding the Difference Between DIN Abrasion Tester and Taber Abraser There are many differences between DIN Abrasion Tester and Taber Abraser in terms of their working principle, specimen requirements, uses, compliance standards, cost and more. We will discuss these differences. Working Mechanism DIN Abrasion Tester uses a rotary drum design. The roller surface is fully wrapped with abrasive sandpaper. Under fixed touching pressure and defined contact area, the specimen sits at a 3° inclination angle against the drum surface. As the drum rotates, the sample moves laterally along the roller to generate continuous sliding abrasion force on the test piece. On the other hand, taber abrasion tester fixes flat specimens onto a rotating turntable. Two weighted abrasive wheels press vertically onto the sample surface. The rotating platform creates a cross‑pattern multi‑directional rubbing wear over the material surface. Operators can select turntable speeds of either 60 rpm or 72 rpm to match different test requirements. Abrasive Media DIN Abrasion Tester relies on #60 grit P60 abrasive paper wrapped around the 150 mm diameter wear drum as its standard abrasive medium. Fresh sandpaper must be fitted for each test run to keep test consistency. Taber Abraser uses interchangeable calibrated abrasive wheels rather than sandpaper. Available wheel types include elastic rubber‑grain wheels such as CS‑10, CS‑...

Welcome Italian Clients to GESTER Factory Recently, customers from Italy visited GESTER headquarters. They toured the company’s modern production base, precision testing laboratories and product exhibition hall on‑site, focusing on GESTER’s technical achievements and complete testing solutions for footwear testing equipment, and held in‑depth business discussions and technical exchanges with the core team. As a professional manufacturer specializing in physical property testing instruments, GESTER also presented its product portfolio covering textile testing, furniture testing, packaging testing and PPE (Personal Protective Equipment) testing. Both sides had thorough discussions on the application prospects and localised cooperation of footwear testing equipment in the European market and reached a preliminary cooperation consensus. During the visit, the GESTER team systematically introduced the working principles and core advantages of footwear testing equipment. This series of testers can simulate real‑world wearing conditions to conduct multiple physical‑property tests including flex‑fatigue resistance, slip resistance coefficient, impact resistance, shock attenuation, electric‑shock resistance and leather flex resistance for footwear and shoe materials, fully complying with international standards such as ISO 20344, SATRA TM92 and EN. Compared with traditional simple testing tools, GESTER footwear testing equipment delivers stable and reproducible test data. Featuring modular hardware design, it meets testing requirements for various products including safety shoes, sports shoes, work boots and casual shoes. Equipped with professional supporting software, it automatically generates complete test reports to satisfy routine testing demands of third‑party laboratories and quality‑control departments of footwear manufacturers. With nearly 30 years of expertise in physical testing instruments, GESTER’s product portfolio covers major categories including footwear testing, textile testing, furniture testing, packaging testing, PPE testing and children‑product testing. Its equipment is widely applied in shoe‑and‑apparel factories, third‑party inspection agencies, laboratories and furniture manufacturers. The Italian customers recognised GESTER’s comprehensive technology and integrated solution capabilities across multiple testing‑instrument categories. Targeting real‑world demands of the European market, the GESTER team also gave an overview of the company’s service capabilities in standard compliance adaptation, multi‑language support, certification documentation and localised technical services. After hands‑on product experience, accompanied by the GESTER team, the Italian customers visited the modern production base to gain first‑hand insight into the full workflow of testing instruments, ranging from R&D and design, component processing to complete‑machine assembly and commissioning. The customers spoke highly of GESTER’s in‑house manufacturi...

NWSP 090.1.R0 (20) is a harmonized nonwoven standard procedure developed by INDA‑EDANA. It tests the stiffness performance of nonwoven fabrics. The standard evaluates fabric stiffness by the cantilever test principle. It applies to a wide range of nonwoven materials, including untreated, sized, coated and resin‑treated nonwovens. Stiffness refers to the resistance of fabric against bending deformation. Appropriate stiffness improves product hand‑feel, shaping performance and handling property for nonwoven goods. Specific content of NWSP 090.1.R0 (20) standard The NWSP 090.1.R0 (20) standard describes how to test nonwoven fabric stiffness via cantilever method. It covers test principle, specimen requirements, sampling, conditioning atmosphere, apparatus specifications, operating steps and calculation rules. The standard ensures tests are consistent and comparable across laboratories. It also provides a reliable basis for assessing the bending performance of nonwoven fabrics in global nonwoven tradeINDA. Application of the NWSP 090.1.R0 (20) standard The NWSP 090.1.R0 (20) standard is widely used in the production and quality control of nonwoven textiles. It applies to most nonwoven fabrics. It also sets a harmonized testing benchmark for international nonwoven fabric trade. Related equivalent standards include ISO 9073‑7, ASTM D 1388, GB/T18318 and BS EN22313. Testing principle of NWSP 090.1.R0 (20) NWSP 090.1.R0 (20) defines stiffness testing by cantilever principle. It measures the overhang length of rectangular specimen which slides forward on horizontal platform, when the specimen tip bends down under its own weight and touches the 41.5° inclined reference plane. Bending length can be derived from measured overhang length, then flexural rigidity and bending modulus can be calculated. The stiffer the nonwoven sample, the longer overhang length it presents. Test results cover bending length, flexural rigidity and bending modulus. Machine direction (MD) and cross direction (CD) shall be tested separately for anisotropic nonwoven materials. Test Methods of NWSP 090.1.R0 (20) Standard For stiffness tests, use professional instruments, such as full‑automatic fabric stiffness tester GT‑C70A. The Cantilever Tester for fabric stiffness pushes rectangular specimen forward at fixed feed rate. It records overhang length when specimen tip reaches the 41.5‑degree inclined plane. Then the instrument computes bending length, flexural rigidity and bending modulus automatically. Manual cantilever devices are also acceptable if they fully satisfy the standard precision requirements. Factors affecting the results of the NWSP 090.1.R0 (20) standard NWSP 090.1.R0 (20) test results depend on several factors. These include the specimen’s fiber composition, fabric structure, bonding condition, coating or resin finishing, basis weight and thickness. The lab technician must handle the specimen carefully during the test, avoid crease, curl or twist of test strips. This w...

A Warm Welcome to Our Italian Customers Visiting GESTER On Sep 2026, Our customers from Italy visited GESTER. This valuable face-to-face exchange marks an important milestone in our long-standing partnership and has further strengthened the mutual trust and cooperation between our two companies. During the visit, our professional team accompanied the Italian customer delegation on a comprehensive tour covering our advanced production workshops, precision testing laboratories. Throughout the onsite inspection, the customers gained intuitive and in-depth insights into GESTER’s standardized production processes, sophisticated footwear testing equipment, strict quality management system and independent R&D capabilities. Our technical specialists provided detailed explanations of product performance, technological innovation, production flow and industry certification standards, and responded patiently to every professional question raised by the guests. The Italian customers highly recognized GESTER’s excellent product quality, rigorous production attitude and professional technical service level, and spoke highly of our comprehensive strength in the industry. They also expressed strong confidence in further deepening long-term strategic cooperation with us. With nearly 30 years of specialized R&D expertise, GESTER Instruments is a premier factory-direct manufacturer and supplier of Footwear Testing Equipment. Our footwear tester is engineered to evaluate critical physical properties, simulate real-world wear patterns, analyze multi-directional flexing fatigue, measure slip resistance coefficients, and test waterproof boundaries under dynamic conditions. Compliance with international standards like ISO 20344, SATRA TM92, ASTM, EN. We provide footwear manufacturers with reliable performance verification for safety shoes, athletic footwear, military boots, and casual shoes. Furthermore, our systems empower raw material suppliers to conduct rigorous durability testing on upper leather, rubber outsoles, shoelaces, eyelets, and specialized foam midsoles. Looking ahead, GESTER will always uphold the customer-oriented concept, continuously optimize product quality and service system, keep exploring innovative technological solutions, and strive to provide more high-quality, reliable footwear testing instruments and services for global customers. We sincerely look forward to launching more in-depth and diversified cooperation with our Italian partners, jointly expanding the European market, and creating greater commercial value and industry prospects through mutual benefit and win-win development.

Nowadays, reliable zipper performance is increasingly demanded across global apparel, luggage and outdoor product markets. Brands and buyers require certified zipper performance instead of only relying on manufacturer self‑claimed quality. Relative standards for zipper testing cover SATRA TM50 Method 1 & 2, ASTM D2061, 16CFR 1500.51‑53, EN 16732, CNS‑1083, BS 3084, QB/T2171 and DIN 3419‑1. These standards focus strictly on accurate measurement of zipper fatigue durability and puller torsional strength. That explains why selecting a suitable zipper tester is critical. Zipper Tester by Test Type To really understand the range of zipper testers, it’s important to break them into different classes. The primary classification is based on the test type the machine performs, and here, we have the following: Zipper Fatigue Tester GT‑C39A This Zipper Fatigue Tester is built to carry out a variety of zipper reciprocating tests through continuous back‑and‑forth action. The ultimate aim is to evaluate whether zippers develop joint separation, loose components, connector failure, fluffing, surface wear, and other defects after repeated cycling. This zipper fatigue tester complies with multiple widely‑recognised standards: CNS‑1083, BS 3084, QB/T2171, DIN 3419‑1, DIN EN 16732, ASTM D2061, SATRA TM50 Method 2. Manufacturers and labs favour this model for its reasonable design and simple operation. The zipper fatigue tester is equipped with an automatic counting device, which completes preset tests and triggers automatic machine stop once cycles are finished. Zipper Reciprocating Fatigue Tester GT‑C39C Next up is the Zipper Reciprocating Fatigue Tester GT‑C39C. It is used to perform a variety of zipper reciprocating tests by running continuous back‑and‑forth motion. The ultimate aim is to test the zipper for joint gap formation, loose connections, connector failure, fluff generation, and wear damage. It follows SATRA TM50 Method 1 as its key testing standard. Much like other reciprocating zipper testers, this unit features reasonable design for easy operation. It comes fitted with an automatic counting device to finish the defined test sequence and stop the machine automatically upon test completion. Zipper Rotation Testing Machine GT‑C39B Finally, we have the Zipper Rotation Testing Machine GT‑C39B. This piece of equipment is used to test the torsional strength of many different types of zipper pullers. Its available testing methods include twist‑off, constant‑angle, and constant‑load testing. Relevant standards for this tester are ASTM D2061, 16CFR 1500.51‑53, EN 16732. There are several notable features built into this rotation tester. 1. It adopts touch‑screen control with a straightforward interface for easy operation. 2. Torsional fixtures are constructed from stainless steel, delivering a simple and generous appearance. 3. The torsion section uses a low‑noise reducer, allowing smooth operation with minimal noise output. 4. It supports the three core t...

If you want to know how fast a disposable wipe can absorb spilled liquid, or how much fluid a medical dressing can hold without leakage, or how quickly liquid spreads across a nonwoven fabric in practical use, then you must go with the nonwovens absorption test. A hygiene nonwoven with a fast absorbency time and high absorptive capacity can easily handle daily use scenarios. Nonwovens buyers and manufacturers heavily rely on this test to ensure the fabric’s ability to handle liquid exposure in real-world applications. What Is the Role of the Nonwovens Absorption Tester for Consistent Results? The Non-Woven Water Absorption Tester gives a simulation of real-world liquid contact scenarios, and it operates on standard parameters that are defined by international organizations such as ISO and EDANA. GESTER’s Automatic Nonwovens Absorption Tester GT-CN26 and Nonwovens Absorption Tester GT-CN02 both adopt high-precision sensing systems and automated control programs, which help the operator get accurate and repeatable test results. Is it essential to do Standardized Testing for Nonwovens Absorption? To perform standardized testing, we have two widely recognized standards, ISO 9073-6 and NWSP 010.1.R0 (20), which provide consistency when performed over different labs. Both standards are internationally recognized and provide comprehensive details regarding test procedures, including specimen preparation, test conditions, operation steps, and result calculation methods. Actually, these standards help the manufacturers as well, because if they have to make the product that can meet a specific absorbency time or capacity requirement, then it means after quality production, their product will meet this index in every country’s lab. The nonwovens buyers buy the product with confidence after seeing the standardized absorption test results. So, in this way, the standardized testing eliminates the guesswork and gives authentic data. ISO 9073-6 The International Organization for Standardization (ISO) provides standard testing methods to measure the liquid absorption properties of nonwoven fabrics under ISO 9073-6. The ISO 9073-6 standard specifically defines standardized test methods to determine the absorption performance of nonwovens. That’s why it is one of the best choices for evaluating the liquid management ability of nonwoven materials. Equipment’s Compliance GESTER’s Automatic Nonwovens Absorption Tester GT-CN26 and Nonwovens Absorption Tester GT-CN02 run the test procedures in strict accordance with standard requirements, which they manage through precise sensors and automated control systems. Only a standard and compliant Liquid Absorbency Time Tester can meet the requirements of the ISO 9073-6 standard and give accurate absorption performance results. Test Parameters and Evaluation of Results When the nonwoven specimen is tested under ISO 9073-6 standard, it undergoes standardized liquid contact, which produces quantifiable indicators including absorb...