Use and Care of Fabric Flat Grinder (Martindale Method)

Scope of application:

The fabric flat grinder (Martindale method) is suitable for woven fabrics, knitted fabrics, non-woven fabrics, decorative materials, coated fabrics, etc. Abrasion resistance test and apparent pilling performance test.

How it works:

The test substance is mounted in the upper specimen holder and rubbed against an abrasive on the grinding table. The friction trajectory is a Lissajous figure (an important feature of the Martindale method). After the specified friction phase according to the test requirements, remove the fabric and calculate the abrasion resistance index or evaluate the fuzzing and pilling level of the sample through visual description.

Operation method:

1. Sample preparation

In the standard environment, under the condition of laying flat and no tension Place it for a certain time according to different standards. Such as 24 hours (GB /T 480 2 .2-19 97), 16 hours (EN ISO 12947-4:1998)

2. Selection of samples

From the whole door Cut out a sample from different parts of the web and the sample must be representative. If it is a nice fabric, the sample should contain all the different textures and colors of the fabric surface;

3. Remove the load and load shaft from the testing machine;

4 Remove the top plate and the test fixture;

5. Sample Device

Loosen the retaining ring on the test fixture, remove the sample compact and place the sample in the test Within the 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 block of the sample clamp; when it is more than 500 g/m2, or a composite fabric, no foam is required. The samples on each sample holder must be subjected to the same voltage.

6. Decoration of wool felt and barn doek

Place the felt and abrasive on the grinding table, put the weight on the abrasive, put on the thrust washer and turn the nut so that the thrust washer fixes the abrasive on the grinding table.

7. Place the grinding head on the abrasive to pressurize;

8. Place the test fixture with the sample facing down on the base fixture and adjust the circle of the test fixture . groove is aligned with the load axis, so that the load shaft is inserted into the circular groove of the test fixture;

9. Set the number of times according to the standard, start the switch and start the test. After reaching the set number of Auto Power Off times;

10. Take the sample and compare it with the standard photo in the rating box.

Precautions for the operation of the cloth surface grinder:

1. The friction cloth cannot be used repeatedly, and a friction cloth must be used every time a testt is completed;

2. Wool felt can be used repeatedly, if When the surface is worn or stained, it should be replaced and can be used on both sides;

3. The insole should be dressed first, and then the Martindale wear test is carried out;

4. After the test is completed, if the surface table of the sample shows abnormal phenomena such as wear, broken yarn, lint, severe pilling and severe wear and tear, it will be assessed as non-qualified.

5. When preparing samples, pay special attention to avoid hair changes on the cutting edges to avoid unnecessary loss of quality and appearance changes.

6. Pay attention to operating specifications and personnel safety during instrument operation.

Maintenance of fabric surface grinder:

1.Must be regular Perform external cleaning and cleaning of the instrument to ensure that the test instrument is clean

2. Check the test instrument regularly to see if there are any abnormalities;

3 .Each user during use, it should be used in accordance with the proper method of use, and should not be used in violation of the regulations, so as not to damage the instrument and shorten the life of the instrument;

4 .After using the test instrument, each user should put the instrument in order and clean the instrument accordingly to ensure that the instrument is clean;

5. When the instrument is not in use, the power of the instrument must be turned off and the instrument must be kept clean.

Attached: Default group - Fabric Flat Grinder (Martindale method)

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