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Everything You Need to Know About the Hydrostatic Head Tester.IntroductionWith the development of science and technology and the growing consumer demand for clothing functionality, the waterproof performance of textiles has become one of the most important indicators for measuring the quality of outdoor clothing, functional fabrics and protective equipment. Hydrostatic pressure tester is an important tool for testing the waterproof performance of materials or productsScope of application: The Hydrostatic Head Testing Machine is widely used in many fields, such as textiles, leather, building materials, automotive interiors, electronic packaging, etc., automotive interiors, electronic product packaging, etc., to ensure that the waterproof performance of the product meets the standard. Especially in the textile field, this equipment is mainly used to test the water permeability of compact fabrics (e.g. canvas, tarpaulin, felt, tent fabrics, rainproof clothing fabrics) under continuously rising water pressure. Testing Principle The working principle of the hydrostatic pressure tester is based on pressure sensors and high-precision computer processing technology. The equipment works by applying increasing (dynamic test) or constant (static test) water pressure to the specimen until water penetration occurs. During the test, the pressure transducer monitors and records in real time the value of the hydrostatic pressure to which the specimen is subjected. At the end of the test, the average maximum water pressure of the specimen can be measured and calculated (usually in mBar or cmH2O) to assess the water resistance of the material. Core Components and Functions 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. Provide the conditions for hydrostatic pressure testing, including the test platform machined from stainless steel material, test tank, pressure transducer and other components.Responsible for controlling pressure changes during the test and recording test results. Some equipment may also be equipped with additional features such as touch screen displays, digital displays, etc. to improve the convenience and accuracy of testing. What are the Test Standards for Hydrostatic Head Tester? The Hydrostatic Head Testing Machine is a standardised procedure used to assess the water resistance of textiles and materials. Multiple test standards govern the execution of the Hydrostatic Head Test, ensuring consistency, accuracy and reliability across various industries and applications. Some of the most commonly cited test standards (also known as waterproofing test standards) include:AATCC 127 Option 2, ISO 811, ISO 1420, GB/T 4744, GB/T 9082, FZT 01004 , DIN 53886 , EN 20811, EN 13726-3, EN 1734, BS 2823, WSP 80.6, JIS L1092-7.1.1 Method A How to Conduct Hydrostatic Head Tester? 1. Power on.2. Open the lid of the water filler on the top of the hydrostatic head tester in textile. Then, use the funnel to add about 3000ml of purified water. Close the lid after adding water.3. Connect the air source and adjust the cylinder pressure according to the testing range.Testing range is 200KPA, pressure shall be about 0.3Mpa.Testing range is 500KPA, pressure shall be about 0.4Mpa.Testing range is 1000KPA, pressure shall be about 0.5-0.6Mpa.The knob can adjust the pressure of the upper and lower fixtures.4. The water inside the water tank could be discharged from the water valve.The overflow from the the fixture could be discharged from the water valve.5. Press “Enter ” enter to the test page. “BACK LIMIT ” is limitation prompt. (The test can only be done when the it returns to the limit position.)6. Click “SETTING” to enter the test interface.7. Select required Test Method. Five test methods for choice: (1)Pressure Rise (2)Const. P. & Timing (3)Const. P. & Time (4)Water Penetration (5) Fatigue.8. Click “TEST_INF ” back to the test interface.9. Click “Water” to add water to the lower test fixture. Click “Water” again to stop adding water when water overflows.10. Place the sample in the test head so that the face of the sample will be in contact with the water.(Try to ensure that the specimen is in contact with the water surface to prevent the presence of air at the bottom of the specimen, which will affect the test results.)11. Click “Down” to press down the upper fixture.(If Current Pressure is not 0Kpa, click “Drain” for drainage few water. Please click “TEST” to start test when the Current Pressure is 0Kpa. )12. Before test, click “P.Zero” to clear. Then, click “TEST” test to start test.When the pressure reaches the set preload pressure value, the machine starts the timer. 11. Click “UP” to up the fixture after the test.The machine will automatically return to the limitation position. (When it prompts BACK LIMIT, please can do next test.) 12. Click “RESULT ”to view the result. Click “SNAPW.” to check the point result. Click to “PRINTALL” to print out the test results. Problems that May arise During the Test During hydrostatic pressure testing, improper operation may have an impact on the results of the experiment. The following situations can affect the results of the experiment:a) Before clamping the specimen, make sure that there is no air between the specimen and the water, and then clamp the specimen for the test of the experiment. If air remains between the specimen and the water, the water cannot contact the test area uniformly, and some areas may fail to form water droplets, affecting the results.b) During the test, try to ensure that there is no water seepage or leakage at the edge of the specimen holding device. If the specimen seeps or leaks at the edge of the clamping device, water will seep out from the edge of the clamping device during the test, and the test pressure of the specimen will rise erratically, which will not ensure the accuracy of the experimental results, and will have an impact on the experimental results. Conclusion Hydrostatic pressure head tester for the textile industry to provide a set of uniform, reliable waterproof performance test method. For enterprises, it helps to improve product quality control standards; for consumers, it can be more intuitive assessment of the waterproof level of the product, to facilitate the purchase of products suitable for their needs!

Everything You Need to Know About the Hydrostatic Head Tester.IntroductionWith the development of science and technology and the growing consumer demand for clothing functionality, the waterproof performance of textiles has become one of the most important indicators for measuring the quality of outdoor clothing, functional fabrics and protective equipment. Hydrostatic pressure tester is an important tool for testing the waterproof performance of materials or productsScope of application: The Hydrostatic Head Testing Machine is widely used in many fields, such as textiles, leather, building materials, automotive interiors, electronic packaging, etc., automotive interiors, electronic product packaging, etc., to ensure that the waterproof performance of the product meets the standard. Especially in the textile field, this equipment is mainly used to test the water permeability of compact fabrics (e.g. canvas, tarpaulin, felt, tent fabrics, rainproof clothing fabrics) under continuously rising water pressure. Testing Principle The working principle of the hydrostatic pressure tester is based on pressure sensors and high-precision computer processing technology. The equipment works by applying increasing (dynamic test) or constant (static test) water pressure to the specimen until water penetration occurs. During the test, the pressure transducer monitors and records in real time the value of the hydrostatic pressure to which the specimen is subjected. At the end of the test, the average maximum water pressure of the specimen can be measured and calculated (usually in mBar or cmH2O) to assess the water resistance of the material. Core Components and Functions 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. Provide the conditions for hydrostatic pressure testing, including the test platform machined from stainless steel material, test tank, pressure transducer and other components.Responsible for controlling pressure changes during the test and recording test results. Some equipment may also be equipped with additional features such as touch screen displays, digital displays, etc. to improve the convenience and accuracy of testing. What are the Test Standards for Hydrostatic Head Tester? The Hydrostatic Head Testing Machine is a standardised procedure used to assess the water resistance of textiles and materials. Multiple test standards govern the execution of the Hydrostatic Head Test, ensuring consistency, accuracy and reliability across various industries and applications. Some of the most commonly cited test standards (also known as waterproofing test standards) include:AATCC 127 Option 2, ISO 811, ISO 1420, GB/T 4744, GB/T 9082, FZT 01004 , DIN 53886 , EN 20811, EN 13726-3, EN 1734, BS 2823, WSP 80.6, JIS L1092-7.1.1 Method A How to Conduct Hydrostatic Head Tester? 1. Power on.2. Open the lid of the water filler on the top of the hydrostatic head tester in textile. Then, use the funnel to add about 3000ml of purified water. Close the lid after adding water.3. Connect the air source and adjust the cylinder pressure according to the testing range.Testing range is 200KPA, pressure shall be about 0.3Mpa.Testing range is 500KPA, pressure shall be about 0.4Mpa.Testing range is 1000KPA, pressure shall be about 0.5-0.6Mpa.The knob can adjust the pressure of the upper and lower fixtures.4. The water inside the water tank could be discharged from the water valve.The overflow from the the fixture could be discharged from the water valve.5. Press “Enter ” enter to the test page. “BACK LIMIT ” is limitation prompt. (The test can only be done when the it returns to the limit position.)6. Click “SETTING” to enter the test interface.7. Select required Test Method. Five test methods for choice: (1)Pressure Rise (2)Const. P. & Timing (3)Const. P. & Time (4)Water Penetration (5) Fatigue.8. Click “TEST_INF ” back to the test interface.9. Click “Water” to add water to the lower test fixture. Click “Water” again to stop adding water when water overflows.10. Place the sample in the test head so that the face of the sample will be in contact with the water.(Try to ensure that the specimen is in contact with the water surface to prevent the presence of air at the bottom of the specimen, which will affect the test results.)11. Click “Down” to press down the upper fixture.(If Current Pressure is not 0Kpa, click “Drain” for drainage few water. Please click “TEST” to start test when the Current Pressure is 0Kpa. )12. Before test, click “P.Zero” to clear. Then, click “TEST” test to start test.When the pressure reaches the set preload pressure value, the machine starts the timer. 11. Click “UP” to up the fixture after the test.The machine will automatically return to the limitation position. (When it prompts BACK LIMIT, please can do next test.) 12. Click “RESULT ”to view the result. Click “SNAPW.” to check the point result. Click to “PRINTALL” to print out the test results. Problems that May arise During the Test During hydrostatic pressure testing, improper operation may have an impact on the results of the experiment. The following situations can affect the results of the experiment:a) Before clamping the specimen, make sure that there is no air between the specimen and the water, and then clamp the specimen for the test of the experiment. If air remains between the specimen and the water, the water cannot contact the test area uniformly, and some areas may fail to form water droplets, affecting the results.b) During the test, try to ensure that there is no water seepage or leakage at the edge of the specimen holding device. If the specimen seeps or leaks at the edge of the clamping device, water will seep out from the edge of the clamping device during the test, and the test pressure of the specimen will rise erratically, which will not ensure the accuracy of the experimental results, and will have an impact on the experimental results. Conclusion Hydrostatic pressure head tester for the textile industry to provide a set of uniform, reliable waterproof performance test method. For enterprises, it helps to improve product quality control standards; for consumers, it can be more intuitive assessment of the waterproof level of the product, to facilitate the purchase of products suitable for their needs!

How to Know the Fabric Shrinkage Test for Your ProjectsIntroductionFabric shrinkage is a natural phenomenon. It can significantly affect the fit, appearance and life of a garment.Fabrics are composed of fibers, and when fibers absorb water, swelling occurs with increased diameter and potential longitudinal expansion. The difference in length between the fabric before and after it has been in the water and the percentage of its original length is usually called the shrinkage rate. The stronger the water absorption capacity, the more intense swelling, the higher the shrinkage rate, the poorer the dimensional stability of the fabric.Understanding fabric shrinkage and conducting shrinkage tests are critical steps in ensuring fabric quality and durability. In this article, we provide you with a complete guide to fabric shrinkage testingWhat is Fabric Shrinkage Testing? Fabric shrinkage occurs when the fabric is exposed to water and the fibres themselves dissolve, shortening the length of the fabric further. Fabrics with different weave shrinkage rates have different magnitudes of shrinkage. Fabric structure and weaving tension of the fabric itself is different, the weaving shrinkage rate is different. Lower weaving tension results in looser fabric structure with higher weaving shrinkage, leading to less post-wash shrinkage, the fabric shrinkage rate is small; weaving tension is large, the fabric is loose and thin, weaving shrinkage rate is small, the fabric shrinkage rate is large.Factors Affecting Shrinkage● Raw material: The shrinkage rate of fabric is different depending on the raw material. Generally speaking, fibres with high hygroscopicity will swell after being immersed in water, increase in diameter and shorten in length, so the shrinkage rate will be large. For example, the water absorption rate of viscose fibre is as high as 13%, while the moisture absorption of synthetic fabrics is poor, and their shrinkage rate is small.● Density: the density of the fabric is different, the shrinkage rate is also different. If the density of the warp and weft is similar, the warp and weft shrinkage rate is also close. Warp density of the fabric, the warp shrinkage is large, on the contrary, the weft density is greater than the warp density of the fabric, the weft shrinkage is also large.● Yarn thickness: fabric yarn thickness is different, shrinkage rate is also different. Fabrics with coarse yarns exhibit higher shrinkage rates, fine yarn fabric shrinkage rate is small.● Production process: fabric production process is different, shrinkage rate is also different. Generally speaking, fabrics in the weaving and dyeing and finishing process, Repeated fiber stretching during prolonged processing under higher tension results in greater fabric shrinkage, processing time is long, the fabric shrinkage rate of the larger applied tension is large, and vice versa is small.● Fibre composition: natural plant fibres (e.g. cotton, linen) and plant regenerated fibres (e.g. viscose) are prone to moisture absorption and expansion compared to synthetic fibres (e.g. polyester, acrylic), so the shrinkage rate is larger, whereas wool is prone to felting due to the scaled structure on the surface of the fibres, which affects its dimensional stability.● Fabric structure: In general, the dimensional stability of woven fabrics is better than that of knitted fabrics; the dimensional stability of high-density fabrics is better than that of low-density ones. In woven fabrics, the general shrinkage rate of plain fabrics is smaller than that of flannel fabrics; and in knitted fabrics, the shrinkage rate of flat needle organisation is smaller than that of ribbed fabrics.● Production and processing: As fabrics are inevitably stretched by machines during the dyeing, printing and finishing processes, there is tension present on the fabrics. However, it is easy to release the tension when the fabric meets water, so we will find the fabric shrinking after washing. In the actual process, we generally use pre-shrinkage to solve this problem.● Wash care process: Wash care includes washing, drying and ironing, and each of these three steps will affect the shrinkage of the fabric. For example, the dimensional stability of a hand-washed sample is better than that of a machine-washed sample, and the temperature at which it is washed also affects its dimensional stability. In general, the higher the temperature, the worse the stability.Fabric Shrinkage TestFabric Shrinkage Tests are used to measure and evaluate the dimensional changes that occur in fabrics after washing, drying or heat exposure. These tests help to understand the potential shrinkage of fabrics and to make informed decisions about fabric selection, sizing and care.Testing Standards Fabric shrinkage tests are usually conducted according to recognised industry standards. Some common standards for fabric shrinkage testing include:GB/T8629, GB/T8630, ISO6330/5077, FZ/T70009, BS4923, EN25077/26330, JIS L1909, IWSTM31,ISO19954, SATRA TM158Shrinkage Test MethodsIn fabric shrinkage testing, a common test method is the use of Wascator Shrinkage Tester. It is used to evaluate the dimensional change and shrinkage of fabrics.Fabric Shrinkage testerAccelerated washing apparatus for knitted and woven fabrics to assess shrinkage in accordance with international test methods. Also used for assessing fabric stability, color fastness, finish durability, spirality and pilling to washing.                                                      How to use Fabric Shrinkage Tester? Testing procedure: First collect the fabric samples or garments to be tested for shrinkage. Make sure they are clean and do not contain any other substances.Setting up the fabric shrinkage tester: Connect to the mains. Fill the machine with the appropriate amount of water according to the manufacturer's instructions. Add any necessary cleaning agents or chemicals as required for the test.Loading Example: Open the door or lid of the Wascator Shrinkage Tester and carefully load the fabric sample or garment into the drum. Make sure not to overload the machine as it will affect the accuracy of the results. Close the door or lid.Select a programme: Select the appropriate programme for your test requirements. Refer to the Wascator Shrinkage Tester's user manual for specific details on programme selection.Adjust Settings: Set parameters such as water temperature, wash time, and agitation speed. Set these parameters accordingly to the instructions provided by the manufacturer or as specified in the test standard.Start Test: After selecting the programme and adjusting the settings, start the test. The Automatic Wascator Shrinkage Tester will begin to fill with water and start the washing process.Monitor the process: During the cycle, you can observe the operation of the machine to ensure that everything is in order. Please note any specific instructions or requirements for the test you are carrying out.Finishing and Result: When the wash cycle is complete, the fabric shrinkage tester may drain automatically or require manual intervention. Open the door or lid and carefully remove fabric samples or clothes. Allow them to dry.ConclusionFabric shrinkage can significantly affect the fit and quality of garments. Performing a fabric shrinkage test is critical for manufacturers, designers and consumers to understand potential changes in size after washing or heat exposure.Using the Automatic Shrinkage Tester can help you better control fabric shrinkage and avoid sizing problems in garment design and production.

How to Know the Fabric Shrinkage Test for Your ProjectsIntroductionFabric shrinkage is a natural phenomenon. It can significantly affect the fit, appearance and life of a garment.Fabrics are composed of fibers, and when fibers absorb water, swelling occurs with increased diameter and potential longitudinal expansion. The difference in length between the fabric before and after it has been in the water and the percentage of its original length is usually called the shrinkage rate. The stronger the water absorption capacity, the more intense swelling, the higher the shrinkage rate, the poorer the dimensional stability of the fabric.Understanding fabric shrinkage and conducting shrinkage tests are critical steps in ensuring fabric quality and durability. In this article, we provide you with a complete guide to fabric shrinkage testingWhat is Fabric Shrinkage Testing? Fabric shrinkage occurs when the fabric is exposed to water and the fibres themselves dissolve, shortening the length of the fabric further. Fabrics with different weave shrinkage rates have different magnitudes of shrinkage. Fabric structure and weaving tension of the fabric itself is different, the weaving shrinkage rate is different. Lower weaving tension results in looser fabric structure with higher weaving shrinkage, leading to less post-wash shrinkage, the fabric shrinkage rate is small; weaving tension is large, the fabric is loose and thin, weaving shrinkage rate is small, the fabric shrinkage rate is large.Factors Affecting Shrinkage● Raw material: The shrinkage rate of fabric is different depending on the raw material. Generally speaking, fibres with high hygroscopicity will swell after being immersed in water, increase in diameter and shorten in length, so the shrinkage rate will be large. For example, the water absorption rate of viscose fibre is as high as 13%, while the moisture absorption of synthetic fabrics is poor, and their shrinkage rate is small.● Density: the density of the fabric is different, the shrinkage rate is also different. If the density of the warp and weft is similar, the warp and weft shrinkage rate is also close. Warp density of the fabric, the warp shrinkage is large, on the contrary, the weft density is greater than the warp density of the fabric, the weft shrinkage is also large.● Yarn thickness: fabric yarn thickness is different, shrinkage rate is also different. Fabrics with coarse yarns exhibit higher shrinkage rates, fine yarn fabric shrinkage rate is small.● Production process: fabric production process is different, shrinkage rate is also different. Generally speaking, fabrics in the weaving and dyeing and finishing process, Repeated fiber stretching during prolonged processing under higher tension results in greater fabric shrinkage, processing time is long, the fabric shrinkage rate of the larger applied tension is large, and vice versa is small.● Fibre composition: natural plant fibres (e.g. cotton, linen) and plant regenerated fibres (e.g. viscose) are prone to moisture absorption and expansion compared to synthetic fibres (e.g. polyester, acrylic), so the shrinkage rate is larger, whereas wool is prone to felting due to the scaled structure on the surface of the fibres, which affects its dimensional stability.● Fabric structure: In general, the dimensional stability of woven fabrics is better than that of knitted fabrics; the dimensional stability of high-density fabrics is better than that of low-density ones. In woven fabrics, the general shrinkage rate of plain fabrics is smaller than that of flannel fabrics; and in knitted fabrics, the shrinkage rate of flat needle organisation is smaller than that of ribbed fabrics.● Production and processing: As fabrics are inevitably stretched by machines during the dyeing, printing and finishing processes, there is tension present on the fabrics. However, it is easy to release the tension when the fabric meets water, so we will find the fabric shrinking after washing. In the actual process, we generally use pre-shrinkage to solve this problem.● Wash care process: Wash care includes washing, drying and ironing, and each of these three steps will affect the shrinkage of the fabric. For example, the dimensional stability of a hand-washed sample is better than that of a machine-washed sample, and the temperature at which it is washed also affects its dimensional stability. In general, the higher the temperature, the worse the stability.Fabric Shrinkage TestFabric Shrinkage Tests are used to measure and evaluate the dimensional changes that occur in fabrics after washing, drying or heat exposure. These tests help to understand the potential shrinkage of fabrics and to make informed decisions about fabric selection, sizing and care.Testing Standards Fabric shrinkage tests are usually conducted according to recognised industry standards. Some common standards for fabric shrinkage testing include:GB/T8629, GB/T8630, ISO6330/5077, FZ/T70009, BS4923, EN25077/26330, JIS L1909, IWSTM31,ISO19954, SATRA TM158Shrinkage Test MethodsIn fabric shrinkage testing, a common test method is the use of Wascator Shrinkage Tester. It is used to evaluate the dimensional change and shrinkage of fabrics.Fabric Shrinkage testerAccelerated washing apparatus for knitted and woven fabrics to assess shrinkage in accordance with international test methods. Also used for assessing fabric stability, color fastness, finish durability, spirality and pilling to washing.                                                      How to use Fabric Shrinkage Tester? Testing procedure: First collect the fabric samples or garments to be tested for shrinkage. Make sure they are clean and do not contain any other substances.Setting up the fabric shrinkage tester: Connect to the mains. Fill the machine with the appropriate amount of water according to the manufacturer's instructions. Add any necessary cleaning agents or chemicals as required for the test.Loading Example: Open the door or lid of the Wascator Shrinkage Tester and carefully load the fabric sample or garment into the drum. Make sure not to overload the machine as it will affect the accuracy of the results. Close the door or lid.Select a programme: Select the appropriate programme for your test requirements. Refer to the Wascator Shrinkage Tester's user manual for specific details on programme selection.Adjust Settings: Set parameters such as water temperature, wash time, and agitation speed. Set these parameters accordingly to the instructions provided by the manufacturer or as specified in the test standard.Start Test: After selecting the programme and adjusting the settings, start the test. The Automatic Wascator Shrinkage Tester will begin to fill with water and start the washing process.Monitor the process: During the cycle, you can observe the operation of the machine to ensure that everything is in order. Please note any specific instructions or requirements for the test you are carrying out.Finishing and Result: When the wash cycle is complete, the fabric shrinkage tester may drain automatically or require manual intervention. Open the door or lid and carefully remove fabric samples or clothes. Allow them to dry.ConclusionFabric shrinkage can significantly affect the fit and quality of garments. Performing a fabric shrinkage test is critical for manufacturers, designers and consumers to understand potential changes in size after washing or heat exposure.Using the Automatic Shrinkage Tester can help you better control fabric shrinkage and avoid sizing problems in garment design and production.