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  • About Several Methods Are Used To Measure Tear Strength
    About Several Methods Are Used To Measure Tear Strength October 16, 2021
    Tear strength A fabric tears when it is snagged by a sharp object and the immediate small puncture is converted into a long rip by what may be a very small extra effort. It is the most common type of strength failure of fabrics in end use. For garment items, such as outdoor clothing, overalls and uniforms, the tearing strength test is a very important quantity. Importance of tear strength test on fabrics: The tear strength is the resistance of fabric against tearing. The tear strength is vital for the textiles, bulletproof jackets, worker jeans, tents, apparel, sacks, and industrial applications. If the tear strength is high, means punctures in the fabrics do not propagate easily. The tear strength is vital in the industrial textiles as heavy duty work is performed. Several methods are used to measure tear strength, e.g. Tongue Test Trapezoid Test Elmendorf Test A. Tongue Tearing Strength of Fabrics In this test method, a cut is made in a rectangular specimen, which starts a tear. By cutting the material, two “tongues” are formed. A reference line is drawn to indicate the point to tear. One tongue is placed in the upper jaw and one tongue is placed in the lower jaw. As the test is run, the jaws move apart and the fabric tears along the pre-cut segment. B. Trapezoid Test The trapezoid tear method is a test that produces tension along a reasonably defined course such that the tear propagates across the width of the specimen. The trapezoid tearing strength for woven fabrics is determined primarily by the properties of the yarns that are gripped in the clamps. In nonwoven fabrics, because the individual fibers are more or less randomly oriented and capable of some reorientation in the direction of the applied load, the maximum trapezoid tearing strength is reached when the resistance to further reorientation is greater than the force required to rupture one or more fibers simultaneously. Elmendorf Tear Strength The Elmendorf tear tester determines the tearing strength by measuring the work done in tearing through a fixed length of the test specimen. It consists of a sector pendulum pivoted on anti-friction ball bearings on a vertical bracket fixed on a rigid metallic base. The test principle is fairly simple; the pendulum is lifted up to certain height. When released, the pendulum will have a certain potential energy, at the bottom of the swing the pendulum tears the specimen and the pendulum loses the energy used to tear the sample.
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  • What to Know About Age Ovens
    What to Know About Age Ovens October 09, 2021
    What to Know About Age Ovens There is a specific kind of industrial oven known as an aging oven.  This type of oven is used in the development and testing of certain products in order to simulate what would happen to the item over time.  Age ovens heat up plastic and rubber products, artificially aging them to simulate what would happen over years of use. Many industries also use age ovens to test and finish aluminum parts. Age ovens are essential to many industries. How Age Ovens Work All industrial ovens need good air flow from the supply duct to the return duct. Otherwise, your oven won’t heat evenly. If you’re testing products to see how they’ll age, this will affect future product development. The plastic or rubber product is baked in the special aging oven. The heat reacts with the chemicals that make up the material of the item and creates the same conditions as the natural wear and tear of age, but in a much shorter period.  This artificial aging helps the designer of the product learn how the product will react over time to age and use, which will help the designer make modifications and needed improvements.   GESTER can with you find the perfect age oven for your needs. Aging ovens are available in various sizes and models, depending on the products and industry they are used for. The temperature, size, and design of the oven depends on its intended use. This Aging Oven is used for testing the changes in characteristics of plastics, rubber, leather, fabrics before and after heating.  The specimen is checked to see its discoloration, split, shrinkage, extension, residualratio, etc. so as to determine the aging characterstics.
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  • What Is The Textile Burst Strength Test
    What Is The Textile Burst Strength Test September 28, 2021
    Textile burst strength test The bursting strength of the fabric refers to the phenomenon that when the fabric is partially subjected to an external force perpendicular to its plane, it expands and ruptures, which is called the bursting strength of the fabric. Commonly used bursting strength test methods are: hydraulic method, Pneumatic method, and steel ball method. Hydraulic method The test principle of the hydraulic method is to clamp a certain area of the sample on an extendable diaphragm, and apply liquid pressure under the diaphragm. Then increase the volume of the liquid at a constant speed to expand the diaphragm and the sample until the sample ruptures, and the bursting strength and bursting expansion are measured. Commonly used hydraulic bursting strength tester is GESTER Bursting Strength Tester GT-C12A, Standards: ISO 13938.1, FZ/T 60019, FZ/T 01030, ASTM D3786, BS 4768, WOOLMARK TM 29, WSP 30.1, JIS L 1018.6. 17. Pneumatic method The test principle of the Pneumatic method is: clamp the sample on an extensible diaphragm, and apply gas pressure under the diaphragm. Then, increase the gas volume at a constant speed to expand the diaphragm and the sample until the sample ruptures, and the bursting strength and bursting expansion are measured. Commonly used pneumatic fabric bursting strength tester is GESTER Pneumatic Bursting Strength Tester GT-C12B, standards: FZ/T60019, ISO2960, ASTM D3786, M&S P27, JIS L-1096, ISO 13938-2. Steel ball method The testing principle of the steel ball method is: The sample of a certain area is clamped in the ring sample fixed on the base, the round spherical push rod at a constant moving speed vertically against the sample, so that the sample deformation until the rupture, measured breaking strength. GESTER Ball Burst Strength Tester GT-C02-2, standard: ASTM D 3787, EN 12332-1, FZ/T 01030, FZ/T 60019, GB/T 19976.
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  • Why Should You Care Shore Hardness?
    Why Should You Care Shore Hardness? September 18, 2021
    What is shore hardness and how is it measured? The Shore durometer is a device for measuring the hardness of a material, typically of polymers, elastomers, and rubbers.Named after its inventor, Albert Ferdinand Shore, Shore hardness offers different scales for measuring the solidity of different materials. A standardised test used industry-wide, the Shore D hardness technique measures the depth of penetration of an indenter, generally using ASTM D2240 and ISO 868 test methods. With readings taken between 0 and 100, Shore hardness measures are dimensionless.Each scale will result in a value from 0 and 100, with the higher number relating to increased hardness. The Shore A and Shore D: The A scale is for softer ones, while the D scale is for harder ones. Shore A is specified for softer elastomer measurements using a needle with a blunted point. Shore D is specified for harder elastomer measurements using a needle that ends with a 30° point angle and is not blunted. How Does a Shore Hardness Test Work? Shore D Hardness is a standardized test consisting in measuring the depth of penetration of a specific indenter. Durometer, like many other hardness tests, measures the depth of an indentation in the material created by a given force on a standardized presser foot. This depth is dependent on the hardness of the material, its viscoelastic properties, the shape of the presser foot, and the duration of the test. ASTM D2240 durometers allows for a measurement of the initial hardness, or the indentation hardness after a given period of time. The basic test requires applying the force in a consistent manner, without shock, and measuring the hardness (depth of the indentation). If a timed hardness is desired, force is applied for the required time and then read. The material under test should be a minimum of 6 mm (0.25 inches) thick. GESTER Shore A Durometer GT-KD09-LX-A is designed for vulcanized rubber and plastic hardness testing. The A scale for rubbers in the normal-hardness range. This instruments simple structure and easy to use, light-type body, intuitive readings.
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  • Gester Team building activities-how each person thinks, works, solves problems, and has fun
    Gester Team building activities-how each person thinks, works, solves problems, and has fun July 17, 2021
    Team building activities can promote better teamwork in the workplace, a great way of improving communication, morale, motivation, productivity, helping employees or new teams to get to know each other better, and learning about one’s strengths and weaknesses.  Gester started team building activties with the purpose that allow them to collaborate efficiently to complete tasks , Through working together, colleagues will be aware of their own capabilities and the capabilities of the group in general, and can organise the workload accordingly. To this end, we also have invited senior professionals in the industry to participate in our company's activities  First of all, with the launch of the Signed activities, the team building officially began.  The first round is divided into four teams, and each team choosed a person to share their team's work plan, goals, and work experience.  After sharing, other teams puted forward questions and suggestions, and finally the judges commented on each team and point out the shortcomings of each team. At this time, it is close to lunch time. Given each team two hours to solve the lunch and improve their problems. Before the start of the second round, we hold a mini game for the hot field. Next each team choosed a member to share their final results, and the judges would comment on it. After two rounds in the morning and afternoon, the judges scored and finally voted for the best team. They also won the generous bonus.  What surprised the judges was that in just two hours, each team fully demonstrated their execution ability and absorbed suggestions from other teams and judges, which were well reflected in the final sharing.  When a team works well together, colleagues feel more comfortable offering suggestions and ideas. A respectful and trusting team environment will not only enable colleagues to think more creatively, but will lead to more productive and collaborative brainstorming sessions. Team building activities and games are supposed to be not only educational but also enjoyable. They help the team learn about each other — how each person thinks, works, solves problems, and has fun. Gester Every employee is also very grateful to the company for this opportunity, which allows them to gain a lot of valuable experience, and also makes each employee more team spirit.  A strong and cohesive team develops systems that allow them to collaborate efficiently to complete tasks.Offering encouragement also goes a long way to getting the best out of team members. Collaborating and being open to new ideas are also essential ingredients for a harmonious team environment.Businesses need new, fresh ideas to succeed in the competitive world.Gester socials and team building can help employees feel fully integrated and engaged, can increase their sense of loyalty to the organisation, best results come from teams who know each other, know how to communicate and how to collaborate, and th...
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  • About Gester C13 Martindale Fabric Abrasion Tester Series
    About Gester C13 Martindale Fabric Abrasion Tester Series July 08, 2021
    What is the Martindale Fabric Abrasion Tester  The abrasion resistance of textiles refers to the wear resistance between fabrics or between fabrics and other substances during repeated friction.  The Martindale Abrasion Tester is widely used for testing the abrasion resistance of clothing and household textiles, decorative fabrics and furniture. Introduce C13 Series from Application, Standards A. Martindale GT-C13 For Testing The Abrasion And Pilling 1. Appication The Martindale GT-C13 For Testing The Abrasion And Pilling is the standard method of determining the wear resistance of textiles or leather and the resistance to pilling. Samples are rubbed against known abradents at low pressures and in continuously changing directions and the amount of abrasion or pilling is compared against standard parameters. Adaptable to test a wide range of applications including textiles, socks, leather, coated upholstery, carpets, wood and shirt collars.  2. Standards Abrasion: GB/T 21196.2, GB/T 13775, ISO 12947, ASTM D4966, IWS TM 112, M﹠S P19, Next 18, SN 198529, TWC 112, JIS L1096 ( ISO17076-2 ball plate method ,optional) Pilling: GB/T 4802.2, ISO12945-2, ASTM D4970, IWS TM 196, M﹠S P17, Next TM26, SN 198525 B. Martindale Abrasion And Pilling Tester GT-C13B 1. Application The martindale abrasion and pilling tester is used to determine the abrasion and pilling resistance of all kinds of textile structures. Samples are rubbed against known abrade at low pressures and in continuously changing directions and the amount of abrasion or pilling is compared against standard parameters. 2. Standards Abrasion: GB/T 21196.2, GB/T 13775, ISO 12947, ASTM D4966, IWS TM 112, M﹠S P19, Next 18, SN 198529, TWC 112, JIS L1096 ( ISO17076-2 ball plate method ,optional) Pilling: GB/T 4802.2, ISO12945-2, ASTM D4970, IWS TM 196, M﹠S P17, Next TM26, SN 198525 C. Martindale Fabric Abrasion Tester 1. Application Martindale Fabric Abrasion Tester is used to determine the abrasion and pilling resistance of all kinds of textile structures. Samples are rubbed against known abradents at low pressures and in continuously changing directions and the amount of abrasion or pilling is compared against standard parameters.  2. Standards Abrasion: GB/T 21196.2, GB/T 13775, ISO 12947, ASTM D4966, IWS TM 112, M﹠S P19, Next 18, SN 198529, TWC 112, JIS L1096 Pilling: GB/T 4802.2, ISO12945-2, ASTM D4970, IWS TM 196, M﹠S P17, Next TM26, SN 198525 Gester Fabric testing instruments with more than 20 years of research development and technology accumulation, has become the key technology to improve quality and productivity in textile industry.
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  • Gester tribute to the 100th Anniversary of the the Communist Party of China!
    Gester tribute to the 100th Anniversary of the the Communist Party of China! July 01, 2021
    Gester tribute to the 100th Anniversary of the the Communist Party of China! With the wisdom of the pen, with sweat as ink, pure love records at the time of the picture, writing Chinese off in the history of the sky. The spring of hope and glory, summer and autumn is golden red passion, and mature, winter snow white and quiet, the motherland seasons are bright. She has led China through decades of ups and downs, and led us through bumps and bumps.On July 1,1921,thebirth of the Communist Party of China was like a dawn breaking the night sky and twinkling in the East.From then on, the history of the Chinese revolution opened a new page.The party has been leading us to stride forward, chopping the waves and opening up the course. We can't forget that the Communist Party of China is fighting in the front line of reform and opening up, resisting Japan and saving the country, and the people's soldiers are fighting in tears to protect the country. We will never forget that the construction, reform and opening up, innovative thinking, generation after generation of new and old party members, conscientious and hardworking in the past 100 years are the pillars of our economy. we will never forget that many outstanding Party members have no regrets and are willing to work for the people and communism all their lives. Gester bless the motherland tomorrow, day Lanshan more green water cleaner, more prosperous economy people happier, more powerful national strength.
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  • What is the Hydrostatic Head Tester In Fabric
    What is the Hydrostatic Head Tester In Fabric June 28, 2021
    What is the Hydrostatic Head Tester In Fabric   A. What is Hydrostatic Head?    Hydrostatic Head is a way of measuring how waterproof a fabric is. The resulting measurement in millimetres relates to how high a column of water standing on the fabric would need to be before the water would penetrate the fabric. For the best fabrics results can be as high as 30,000mm, i.e. 30 metres high, before it would penetrate the fabric.    B. Hydrostatic Pressure   The Hydrostatic Pressure test evaluates a material’s resistance to water penetration. The test is done using a machine that replicates the downward pressure that a water column of such height would create. The machine increases the pressure of water that is pushed against the fabric until water is visible on the other side. The required level of pressure used to force water through the fabric is then converted into a measurement of how high the water column would have been. This provides the result of the Hydrostatic Head test in millimetres.    C. WHAT IS A HYDROSTATIC HEAD TESTER? A Hydrostatic Head Tester is a measuring device used to measure the water penetration resistance of fabrics and seams. It provides quick and accurate results. Digital Hydrostatic Head Tester is used to testing the waterproof properties of fabrics through waterproofing work such as canvas, coated fabrics, hood fabric, tarpaulin, rain-proof fabrics and geotextile.    D.The Feature Of High Pressure-Servo Hydrostatic Pressure Test Equipment 1. The pressure using dynamic feedback regulation effectively prevent pressure overshoot.  2. Japan Panasonic servo motor and drive system, 16-bit A/D conversion. 3. Hydrostatic head tester -whole machine with aluminum alloy structure. 4. Sensor protection: automatic overload protection ( automatic switching of multi-sensor range). Hydrostatic Head Tester Touch-Screen display with English menu. Internally installed water tank design and original water pressure balance system makes the rate of rise stable and exact.    E. The hydrostatic head test standard AATCC 127 Option 2, ISO 811, ISO 1420, GB/T4744, FZT01004 , DIN53886 , JIS L1092, EN20811, EN 13726-3
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