G235 Martindale wear resistance and pilling tester
Martindale wear resistance and pilling tester is used for testing the wear
resistance and pilling degree of knitted fabrics, woolen textiles, synthetic
leather, etc. under different pressures.
Operating precautions:
1. The friction cloth cannot be reused, and a new friction cloth needs to
be replaced after each test is completed;
2. Wool felt can be reused. If there is wear or contamination on the
surface, it needs to be replaced and can be used on both sides;
3. The insoles should be debuffed first before undergoing the Martindale
abrasion test;
4. If there are abnormal phenomena such as abrasion, broken yarn, pilling
or severe pilling, and severe wear on the surface of the sample after testing,
it is judged as unqualified;
5. When making samples, special attention should be paid to cutting edges
to avoid any hair changes, in order to avoid unnecessary quality loss and
appearance changes.
Operation steps:
1. Preparation of samples
In a standard environment, place for a period of time in a flat and non
stretched state according to different standard requirements. For example, 24
hours (GB/T 4802.2-1997), 16 hours (EN ISO 12947-4:1998)
2. Selection of samples
Cut a sample from different parts of the entire width material, and the
sample should be representative. If it is a fancy fabric, the sample should
include all the different textures and colors presented on the fabric
surface;
3. Remove the load and load shaft from the testing machine;
4. Remove the top plate and testing fixture;
5. Sample device:
Loosen the fixing ring on the test fixture, take down the sample
compression plate, and put the sample into the base of the test fixture. When
the tested fabric is not more than 500g/m2, place a piece of polyester foam
plastic between the sample and the metal stopper of the sample holder. When it
is more than 500g/m2, or when it is a composite fabric, it is not necessary to
pad foam plastic, and the samples on each sample holder should be subject to the
same tension.
6. Device for wool felt and friction cloth:
Place the felt and abrasive on the grinding table, place the weight on the
abrasive, then place the pressure ring, tighten the nut, so that the pressure
ring fixes the abrasive on the grinding table.
7. Place the grinding head on the abrasive and apply pressure;
8. Place the test fixture with the sample facing downwards on the base
fixture, adjust the circular groove of the test fixture to align with the load
axis rod, so that the load axis rod is inserted into the circular groove of the
test fixture;
9. According to the standard set number of times, start the switch, start
the test, and automatically stop the machine after reaching the set number of
times;
10. Remove the sample and compare it with the standard sample in the rating
box.
2024-03-28 17:26