Complete Analysis of ISO 12945-2:2020 Textile Pilling Resistance Test Standard

In the field of textile quality control and performance evaluation, pilling resistance is one of the core indicators for measuring fabric appearance durability, directly affecting product wearing experience, service life, and market competitiveness. ISO 12945-2:2020 “Textiles – Determination of the tendency of fabrics to pill, fuzz or mat – Part 2: Modified Martindale method” serves as a globally recognized test standard, providing a scientific and unified testing basis for textile enterprises, laboratories, and quality inspection institutions worldwide. This article comprehensively interprets the technical key points and practical value of this standard from aspects of core content, test principle, operation process, application scenarios, and relevant comparisons.

I. Basic Information of the Standard

ISO 12945-2 is issued by the International Organization for Standardization (ISO), with its latest version officially implemented in October 2020, replacing EN ISO 12945-2:2000. It has been optimized and upgraded in terms of test accuracy, operational standardization, and scope of application. As part of the ISO 12945 series standards, which cover multiple test methods (such as the ICI pilling box method and random tumble method), Part 2 focuses on the modified Martindale method, one of the most widely used pilling resistance test methods in the textile industry.
The core positioning of this standard is to quantitatively evaluate the ability of woven, knitted, and non-woven fabrics (excluding pile fabrics) to resist pilling, fuzzing, and matting by simulating the wear process in actual use. It is applicable to various textile products such as garment fabrics, interior decorative fabrics, and automotive textiles, providing technical support for product quality grading, process optimization, and trade acceptance.

II. Test Principle and Core Advantages

1. Core Test Principle
Based on the physical characteristics of fabric friction and wear, the modified Martindale method simulates the actual working conditions of fabrics during wearing and use (such as clothing friction and furniture fabric wear) by subjecting fabric samples to circular reciprocating friction with standard abrasives under controlled pressure. During friction, surface fibers of the fabric slip, break, and entangle under force, resulting in pilling, fuzzing, or matting. By setting a fixed number of friction cycles, the surface condition of the fabric is finally rated to reflect its pilling resistance.
2. Core Advantages of the Method
Compared with other pilling resistance test methods (such as the random tumble method and ICI Mets barrier method), the modified Martindale method specified in ISO 12945-2 has significant advantages: Firstly, it features strong controllability of test conditions. Friction pressure and cycle times can be adjusted to adapt to the actual use scenarios of different fabrics, ensuring high repeatability of test results. Secondly, it can simultaneously evaluate three surface defects (pilling, fuzzing, and matting) with a wider coverage, especially suitable for common fabrics such as wool, polyester blends, and cotton. Thirdly, the simulated working conditions are close to actual use scenarios, and the test results have a strong correlation with the actual performance of products. Recognized by most countries and trade platforms worldwide (such as the EU and North American markets), it is one of the core testing bases for textile import and export trade.

III. Detailed Test Process and Technical Requirements

ISO 12945-2 sets strict regulations on test environmental conditions, sample preparation, equipment operation, and result evaluation to ensure the standardization and accuracy of tests.
1. Test Environment and Equipment Requirements
Environmental conditions shall comply with the standard atmosphere for textile testing specified in ISO 139: temperature (20±2) °C and relative humidity (65±4)%. Test samples and abrasives shall be preconditioned in this environment for at least 16 hours to eliminate the impact of environmental factors on the fiber state of fabrics.
The core test equipment is the Martindale abrasion tester, which shall meet the calibration requirements of ISO 12947-1. It can be equipped with 2-station, 4-station, or 6-station test units to adapt to different test throughput needs (small laboratories can choose 2-station equipment, while large factories and commercial laboratories can use multi-station equipment to improve efficiency). Key components of the equipment include sample holders, abrasive tables, loading weights, and auxiliary installation tools. Standard wool fabrics or specified fiber abrasives shall be used, and the condition of abrasives shall be checked after each test. Contaminated or worn abrasives shall be replaced in a timely manner to avoid affecting test results.
2. Sample Preparation Specifications
Samples shall be randomly cut from the fabric to be tested without obvious defects, with a diameter of (140±5) mm. At least 3 parallel samples shall be prepared for each specimen to reduce test errors. For stretchable materials such as knitted fabrics, excessive stretching shall be avoided during preparation to ensure uniform sample tension during testing. When installing samples, a felt disc with a diameter of (90±1) mm shall be placed in the center of the concave surface of the sample holder, and the sample shall be covered on the felt with the front side up. After adjusting the sample tension to be uniform with auxiliary tools, fix it with a clamping ring to prevent sample slipping during testing.
3. Test Operation Steps
1.Install the prepared sample holder on the Martindale tester, place standard felt and abrasives on the abrasive table, and fix them with installation weights to ensure close contact between abrasives and the sample surface.
2.Set the number of friction cycles according to the fabric type and application scenario. Common settings are 2,000, 5,000, or 10,000 cycles (e.g., 2,000-5,000 cycles for garment fabrics, and over 10,000 cycles for high-frequency use fabrics such as furniture fabrics and automotive textiles).
3.Start the equipment, and the sample will undergo circular friction with abrasives under the set pressure. Regularly check the operation status of the equipment during the test to ensure stable friction trajectory and pressure.
4.After reaching the set number of cycles, take out the sample and gently remove loose surface fibers and debris to avoid damaging the pills or fluff formed on the fabric surface.
4. Result Evaluation Method
The surface condition of samples shall be visually rated in accordance with ISO 12945-4, using a 1-5 grade system: Grade 5 (best) means no obvious fuzzing or pilling on the fabric surface; Grade 4 means slight fuzzing or a small number of fine pills; Grade 3 means obvious fuzzing and a moderate number of pills; Grade 2 means severe fuzzing with a large number of dense pills; Grade 1 (worst) means a large number of dense pills on the surface, even fiber breakage and matting.
Evaluation shall be conducted under standard light sources by at least 2 professional personnel independently. If the rating difference exceeds 1 grade, re-evaluation shall be performed or the number of parallel samples shall be increased. When necessary, instrumental evaluation methods can be used to assist visual rating to improve result accuracy.

IV. Application Scenarios and Practical Value

1. Core Application Fields
ISO 12945-2 is widely applied in the entire industrial chain of the textile industry, with specific scenarios including:
•Quality Control in Production Enterprises: Textile factories use this standard test to optimize spinning, weaving, and finishing processes (such as singeing and anti-pilling finishing) during raw material warehousing, production processes, and finished product delivery to ensure products meet quality standards.
•Third-Party Laboratory Testing: Commercial quality inspection institutions provide compliance testing services for enterprises and issue internationally recognized test reports to support product import and export trade and market access.
•Trade Acceptance and Contract Agreement: In textile import and export trade, buyers and sellers often use ISO 12945-2 test results as the acceptance basis, clarifying anti-pilling grade requirements to avoid trade disputes.
•Product R&D and Innovation: Research institutions and enterprise R&D departments use this standard test to evaluate the pilling resistance of new fiber materials and composite processes, promoting the development of high-performance textiles.
2. Collaborative Application with Relevant Standards
ISO 12945-2 is not used in isolation but needs to be coordinated with series standards and relevant industry standards: Firstly, it is matched with ISO 12945-4 (visual evaluation method) to ensure the unity of result evaluation; secondly, it refers to ISO 139 (environmental conditions) and ISO 12947-1 (equipment calibration) to ensure test standardization; thirdly, it has similar technical requirements to ASTM D4970 (American Martindale test standard), enabling mutual reference to meet trade needs in different regions.

V. Common Test Misunderstandings and Precautions

In actual testing, the following factors are likely to affect the accuracy of test results and need to be avoided:
•Delayed Abrasive Replacement: Contaminated or worn abrasives will change the friction coefficient, leading to high or low test results. The requirement of “check after each test and replace if necessary” shall be strictly followed.
•Uneven Sample Tension: Excessive tension during installation of stretchable materials such as knitted fabrics will accelerate fiber breakage, resulting in low pilling resistance grades. Auxiliary tools shall be used to ensure uniform sample tension.
•Insufficient Environmental Preconditioning: Insufficient preconditioning of samples in the standard atmosphere will cause unstable fiber moisture content, affecting the stress state of fibers during friction. A preconditioning time of at least 16 hours shall be guaranteed.
•Subjective Rating Bias: Visual rating is greatly affected by personnel experience. Regular training and calibration for evaluators shall be conducted, and instrumental assistance shall be used when necessary.

VI. Conclusion

As a core international standard for textile pilling resistance testing, ISO 12945-2:2020 has become an important technical support for textile industry quality control and trade due to its scientific test principle, rigorous operation specifications, and wide recognition. Whether for production enterprises optimizing processes, laboratories conducting compliance testing, or trade parties clarifying quality agreements, in-depth understanding and strict implementation of this standard can effectively improve product quality stability and reduce trade risks. With the development of textile technology, this standard will continue to be iterated and optimized to better adapt to the testing needs of new textiles and promote the improvement of the global textile industry’s quality level.

Our product GA-4015-A Martindale Pilling Tester meets this standard.

GA-4015-A Martindale Pilling Tester

Test standard :
GB/T 21196, GB/T 4802.2, GB/T 13775, FZ/T 20020, ISO 12945-2, ISO 12947
ASTM D 4966, ASTM D 4970, ASTM D 3886, JIS L 1096, IWS Tm196/ TM112

Scope of application :
Used for measuring wear resistance, pilling performance and surface changes of woven fabrics, knitted fabrics, woven fabrics, coated fabrics and non-woven fabrics.

Device characteristics :
1.The standard li sha ru curve
2.Heavy hammer and key components are made of 304 stainless steel, with beautiful appearance and durability
3.The pressure plate is made of specially made aluminum alloy to ensure that it is not deformed for a long time
4.Roller bearing type connecting drive, ensure that the test of each table is not error
5.Preset multiple running programs, multiple counting methods (counting and subtracting)
6.The independent accumulation counts of work stations can be locked at any time to facilitate test management
7.Color touch screen control, Chinese and English menu operation interface.

Technical Parameters:
1.Number of stations: 6
2.Counting range: 0 ~ 999999 times
3.Maximum dynamic range: horizontal: 60.5 + 0.5mm vertical: 24 + 0.5mm
4.Pressure quality: a, holder: 198 + 2 2g
B.terial specimen weight: 395 + 2 2g
C.Sample weight of furniture decoration: 594 + 2 2g
D, B type clamping device: 155, plus or minus 1 g
E, stainless steel butterfly plate: 260 + 1g
5.Effective friction diameter of grinding block:
Type A 198 g (1.96 N) friction head Φ 28.65 + / – 0.05 mm
Friction type B 155 g (1.52 N) Φ 90 + / – 0.10 mm
6.The relative speed of the clamping device and the grinding table: 50/2r/min
7.Quality of sample weight: 2385 + 10g
8.Dimensions: 885 x 600 x 410mm
9.Power supply: Ac220V 50Hz 500W
10.Weight: 150kg

product link:

https://www.gonoava.com/product/ga-4015-a-martindale-pilling-tester/

Contact:

Email: arlenliu@gonoava.com
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