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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.

IntroductionFabrics during use are subjected to light, washing, ironing, perspiration, friction, and chemical exposure. some printed and dyed textiles are also subjected to special finishing processes, such as resin finishing, flame retardant finishing, sand washing, brushing, etc., which requires printed and dyed textiles to maintain a certain degree of relative fastness to the color and luster.Color fastness refers to a product's resistance to washing, friction, and other environmental factors.Color fastness is good and poor, Substandard color fastness may pose health risks as, poor color fastness of the product in the wearing process, encounter rain, sweat will cause the pigment on the fabric to fall off and discoloration, the dye molecules and heavy metal ions, etc. may be absorbed by the human body through the skin and endanger the health of the human skin, on the other hand, it will also affect the wearer's other garments to be stained with colors, or with other clothing when washing dirty other Clothing. Because of the great difference in the conditions and requirements of the fabrics during processing and use, the following color fastness tests are available. Color Fastness to Rubbing  Color fastness to rubbing refers to the degree to which the color of a printed fabric remains firm under rubbing. The color fastness of colored materials to rubbing depends on two main factors.Crockmeter to determine the colour fastness of textiles to dry or wet rubbing. A pinned acrylic sample holder ensures rapid sample mounting and repeatability of results.                                  Perspiration  Color fastness to perspiration measures the ability of a printed textile to resist perspiration. Researchers use it primarily to test colored summer garments that come into regular contact with human skin.The specimen is sewn together with a standard appliqué fabric, treated in a sweat solution, clamped to a color fastness to perspiration tester, placed in an oven at a constant temperature, then dried, and rated with a grey card to obtain the test results. Different test methods have different ratios of perspiration solution, different specimen sizes, different test temperatures and times.Perspiration Testerapply for testing perspiration resistance color fastness of all kinds of textile materials & dyeing, colorful textile and test for their perspiration resistance, waterproof, seawater resistance, saliva resistance, chlorine bleach resistance, etamsylate resistance and other performance.                                  Color Fastness to Washing Test Color Fastness to Washing Measures the ability of textiles to resist fading when washed. It tests printed and dyed fabrics. It is a key quality measure for most of these textiles.Washing Color Fastness Testerapply to test dyeing textile color fastness changing degree after washing, it not only do washing color fastness and also dry washing color fastness test.                                   Color Fastness to Light  Color fastness to light is the ability of a textile to resist fading when exposed to daylight or artificial light sources.1.  Colorfastness to Ozone GT-D01B It is intended for assessing the Ozone resistance of color of textiles of all kinds and in all forms when exposed to atmosphere with certain temperature and humidity.2. Suntest & Xenon Arc TesterThe Suntest & Xenon Arc Testers is a powerful Xenon Instrument for conducting accelerated tests of light fastness and photo stability tests.                                   Color Fastness to Sublimation  This is the degree of heat sublimation dyed fabrics experience in storage.This Scorch & Sublimation Tester GT-D03 apply to textile assist color change or transfer capacity under heating condition, simulate textile being ironing and under high temperature & humidity dyeing color fastness to sublimation degree in daily life.                                  Color fastness characterizes a textile's ability to maintain its original hue despite environmental stresses. Users can carry out color fastness tests according to their needs.

IntroductionFabrics during use are subjected to light, washing, ironing, perspiration, friction, and chemical exposure. some printed and dyed textiles are also subjected to special finishing processes, such as resin finishing, flame retardant finishing, sand washing, brushing, etc., which requires printed and dyed textiles to maintain a certain degree of relative fastness to the color and luster.Color fastness refers to a product's resistance to washing, friction, and other environmental factors.Color fastness is good and poor, Substandard color fastness may pose health risks as, poor color fastness of the product in the wearing process, encounter rain, sweat will cause the pigment on the fabric to fall off and discoloration, the dye molecules and heavy metal ions, etc. may be absorbed by the human body through the skin and endanger the health of the human skin, on the other hand, it will also affect the wearer's other garments to be stained with colors, or with other clothing when washing dirty other Clothing. Because of the great difference in the conditions and requirements of the fabrics during processing and use, the following color fastness tests are available. Color Fastness to Rubbing  Color fastness to rubbing refers to the degree to which the color of a printed fabric remains firm under rubbing. The color fastness of colored materials to rubbing depends on two main factors.Crockmeter to determine the colour fastness of textiles to dry or wet rubbing. A pinned acrylic sample holder ensures rapid sample mounting and repeatability of results.                                  Perspiration  Color fastness to perspiration measures the ability of a printed textile to resist perspiration. Researchers use it primarily to test colored summer garments that come into regular contact with human skin.The specimen is sewn together with a standard appliqué fabric, treated in a sweat solution, clamped to a color fastness to perspiration tester, placed in an oven at a constant temperature, then dried, and rated with a grey card to obtain the test results. Different test methods have different ratios of perspiration solution, different specimen sizes, different test temperatures and times.Perspiration Testerapply for testing perspiration resistance color fastness of all kinds of textile materials & dyeing, colorful textile and test for their perspiration resistance, waterproof, seawater resistance, saliva resistance, chlorine bleach resistance, etamsylate resistance and other performance.                                  Color Fastness to Washing Test Color Fastness to Washing Measures the ability of textiles to resist fading when washed. It tests printed and dyed fabrics. It is a key quality measure for most of these textiles.Washing Color Fastness Testerapply to test dyeing textile color fastness changing degree after washing, it not only do washing color fastness and also dry washing color fastness test.                                   Color Fastness to Light  Color fastness to light is the ability of a textile to resist fading when exposed to daylight or artificial light sources.1.  Colorfastness to Ozone GT-D01B It is intended for assessing the Ozone resistance of color of textiles of all kinds and in all forms when exposed to atmosphere with certain temperature and humidity.2. Suntest & Xenon Arc TesterThe Suntest & Xenon Arc Testers is a powerful Xenon Instrument for conducting accelerated tests of light fastness and photo stability tests.                                   Color Fastness to Sublimation  This is the degree of heat sublimation dyed fabrics experience in storage.This Scorch & Sublimation Tester GT-D03 apply to textile assist color change or transfer capacity under heating condition, simulate textile being ironing and under high temperature & humidity dyeing color fastness to sublimation degree in daily life.                                  Color fastness characterizes a textile's ability to maintain its original hue despite environmental stresses. Users can carry out color fastness tests according to their needs.