Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
Test Procedure for Martindale Pilling Tester
Standard: ASTMD 4970; ISO12945.2; GB/T4802.2/13775/21196.1/21196.2; ASTMD4966; ISO 12947; FZ/T 20020; BS3424-24/5690; ISO 12947.1/12947.2; M&S; P17/P19/P19C; NEXT 18/18a/18b; ISO5470-2; IWTO-40; JIS L10968.17.5 MethodE; Woolmark TM112/196; BS EN 388/530/13770; ISO20344 The round fabric sample is fixed on the grinding table, and the friction test is carried out with the friction head fixed with the standard friction cloth. There are three evaluation methods: the determination of sample damage, the determination of mass loss, and the evaluation of appearance changes. 2) Pilling test The pilling test method used in Martindale was developed with EMPA. The test is suitable for knitted and woven fabrics (woven from spun yarn). Use a testing instrument to simulate the pilling that occurs in normal wear. Under slight pressure, rub the sample mounted on the sample holder and the fabric on the grinding table with each other in a certain geometric pattern, and then rub the ground sample. Compared with the standard sample photo. According to the type of the tested sample, it can be simply divided into: knitted pilling review sample photo, woven fabric pilling review sample photo. And according to the eye redness of pilling, it is divided into five grades 5-no pilling 4-slight pilling 3-moderate pilling 2-severe pilling 1-very serious pilling Test method: The rubbing cloth is rubbed, and after reaching a predetermined number of rotations, the wear resistance of the sample is evaluated. Operation method 1. Preparation of the sample In a standard environment, place it for a period of time according to different standards in a flat, unstretched state. Such as 24h (GB/T 4802.2-1997), 16h (EN ISO 12947-4:1998) 2. Selection of samples representative. In the case of fancy fabrics, the sample shall include all the different textures and shades exhibited by the fabric; 3. Remove the load and load shaft from the testing machine; 4. Remove the top plate and test fixture; 5. Apparatus for the sample : Loosen the fixing ring on the test fixture, take off the sample press, and place the sample into the test fixture base. When the tested fabric is not more than 500 g/m2, a piece of polyester foam is placed between the sample and the metal plug of the sample holder; when it is greater than 500 g/m2, or a composite fabric, no foam is required. The specimens on each specimen clamp shall be subjected to the same tension. 6. The device of wool felt and friction cloth: Put the felt and abrasive on the grinding table, put the weight on the abrasive, then put the pressure ring, and tighten the nut, so that the pressure ring can fix the abrasive on the grinding table. 7. Put the grinding head on the abrasive and pressurize; 8. Place the test fixture with the sample face down and place it on the base fixture, and adjust the circular groove of the test fixture to align the load shaft, so that the load shaft is inserted In the circular groove of the test fixture; 9. According to the standard set times, start the switch, start the test, and automatically stop after reaching the set number of times: 10. Remove the sample and compare the standard sample in the rating box. Pay attention to the operation of the machine Matters: 1. The rubbing cloth cannot be used repeatedly, and a piece of rubbing cloth needs to be replaced each time a test is completed; 2. The wool felt can be used repeatedly, if the surface is worn or stained and needs to be replaced, it can be used on both sides; 3. The insole should be First remove the cloth, and then carry out the Martindale wear test; 4. After the test is completed, the surface of the sample has abnormal phenomena such as wear, broken yarn, pilling or serious pilling, serious wear, etc., it is judged as unqualified. 5. When making samples, special attention should be paid to the cutting edge not to produce hair changes, so as to avoid unnecessary quality loss and appearance changes. 6. Pay attention to operating specifications and personnel safety during the operation of the instrument. Maintenance: 1. The external cleaning and cleaning of the instrument must be carried out regularly to ensure the cleanliness of the test instrument. 2. Regularly check the test instrument to see if there is any abnormality; 4. After using the test instrument, each user must put the instrument in place and clean the instrument accordingly to ensure the safety of the instrument. Cleaning; 5. When the instrument is not in use, the power supply of the instrument should be turned off and the instrument should be kept clean.
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