Analysis of the operation method of various test instruments in the dust pilling test experiment

The item indicators that textile companies must detect during the fabric pilling test. The pilling test of textiles is divided into different standards with different requirements, and different test instruments are also used. This article will focus on the methods of operation of several commonly used test instruments, such as the circular track method, the Martindale method, and the pilling box method.

First, the circle trajectory method.
1. Preparation before the test:
2. Before the test, the instrument should be kept level and the nylon brush kept clean.
3. Install the foam gasket, sample and abrasive on the test head and grinding table respectively, and the sample should face out.
4. According to table 2, adjust the pressure weight of the sample holder and the number of friction revolutions. For other substances, you can refer to the comparisonselectable substances listed in Table 2 or test parameters and abrasives separately for testing.

5. Take the sample down and place it in the evaluation box according to the size, density and shape of the pellets on the sample Compare with the corresponding e standard photos and rate the pilling degree of each sample with the nearest number of 0.5.

Second, the Martindale method.
1. The sample is installed on the instrument holder, the test surface of the sample faces outward, and when the tested substance is not more than 500g/㎡, a piece of polyester foam is placed between the sample and the metal plug of the sample holder, and the samples on each sample holder should be be subjected to the same voltage.
2. Place the felt and abrasive on the grinding table, place the weight onthe abrasive, then put the thrust washer and tighten the nut, so that the thrust washer fixes the abrasive on the grinding table, and the abrasives on the six grinding tables should be under the same tension.
3. Place the grinding head on the abrasive material and apply pressure. The mandrel passes through the panel bearing and places it on the grinding head. At this time, the pressure on the abrasive material is 196cN.
4. The preset counter is 1000, start the instrument, rotate it up to 1000 times, the instrument will stop automatically.
5. Remove the sample, compare the standard photo in the evaluation box, and evaluate the pilling degree of each sample, expressed in the nearest 1/2 degree.

Third, the pilling box method.
1. Place the four sets of sample loading tubes in the box, close the lid of the box tightly and turn the counter to the required number of revolutions.
2. The preset speed is 7200 r for wool fabricfen and 14400 r for worsted weight fabrics.
3. Start the pilling box. When the counter reaches the required number of revolutions, remove the sample from the sample loading tube and remove the sutures; flatten the sample, compare the standard sample photo in the evaluation box, and evaluate the degree of pilling of each sample, expressed to the nearest 1/2 degree.

Prev: What problems should be paid attention to in the fabric random pilling test?