HERE Rolling Box Pilling Tester Cashmere Fabric Pilling Test

During the process of wearing, the fabric is constantly subjected to various external forces, and the continuous frictional action of the external force causes the plush to tangle into balls and protrude on the surface of the fabric. This phenomenon is called fabric pilling. Therefore, when designing fabrics, selecting apparel fabrics or controlling the quality of fabrics, special attention should be paid to the pilling resistance of fabrics. ICI rolling box pilling tester is the test equipment to test the pilling performance of cashmere fabrics. Qisnun Precision Electromechanical Technology Co., Ltd. is the manufacturer.

Pilling Process:

(a) represents the fabric as it is;

(b) represents the second stage, the fibers on the surface of the fabric are constantly subjected to friction. The tearing of the fabric produces fuzz;

(c) indicates the second stage, fibers non lost are tangled with each other and intensifies fiber extraction;

(d) in indicates the third In the first stage, the fibers are tangled more and more tightly, forming small pellets;

(e) represents the fourth stage, the fibers connecting pellets are broken or torn off;

(f) represents In the fifth state, spherulites fall.

Factors Influencing Pilling of Cashmere Knitwear:

Among the many factors influencing the pilling of fabrics, such as such as fiber properties, textile processing parameters (yarn twist and fabric structure), post-dyeing and finishing treatment, wearing conditions, etc. Among them, fiber properties are the main cause of fabric pilling.

1. Raw Material Properties

Cashmere fiber is fine and short with less curl, near the cross section.circular sversality, good elongation and elasticity, low bending stiffness and resistance to fatigue Well, these properties all tend to make the fabric prone to pilling; of which the short fiber hairs, the length and the dispersion of the length are the main influencing factors. Therefore, in the processing of cashmere products, cashmere raw materials should be selected reasonably according to product performance and use, and combined with other technological means to achieve effective control of fabric pilling. in cashmere.

2. Spinning twist

For knitted products, based on the principle of considering raw material factors, the main factor affecting spinning pilling is twist yarn, yarn twist The ratio of size and twist coefficient directly affects the pilling of the fabric. Intwist of the yarn, the twist of the single yarn determines the degree of cohesion between the fibers, and the twist of the twisted yarn determines the balance of the internal stress of the yarn, so the twist of the single yarn is the key factor determining the pilling.

3. Knitting Parameters

For cashmere knit fabrics, the knitting density is inversely proportional to the length of the loop, the knitting density of single jersey fabric is low and the loop length is large. When the overface is rubbed by an external force, the fibers of the yarn are prevented from coming out of the surface of the yarn by a small force, and the ends of the fibers are easy to protrude from the yarn, which increases the likelihood of fabric pilling .

4. Dyeing process

In the production process, the dyeing process will affect the raw material indicators. There are three quality elements of color, but it is also afactor that affects fiber indicators. When arranging feeding, technicians should take into account the degree of damage to raw materials during the dyeing process, so as to make full use of the various indicators of raw materials. The index value of the raw material before and after dyeing has obvious changes, the length decreases, the dispersion of the length increases and decreases, and the rate of short fluff increases. It is found that the dye has an impact on the raw material, thus affecting the pilling performance of the product.

5. Finishing process

The yarn finishing process of cashmere knitwear generally refers to the finishing process after the yarn is woven into a garment and before the finished product, mainly including shrinking, special finishing (like anti-pilling, anti-shrinking, etc.) and ironing and setting. Milling is aimportant part of the finishing process of cashmere knitted fabrics. The main process factors affecting the grinding effect are: grinding medium, bath ratio, temperature, pH value, time, mechanical force, etc. Whether the grinding process is reasonable or not directly depends on the grinding process. This affects the appearance quality, finished product specifications and product pilling performance.

Method of testing the pilling performance of cashmere products:

Experience shows that when cashmere products are tested by Martindale and random drumming methods, it is difficult to reach grade 3 or higher. For cashmere knitwear, the applicable anti-pilling test method is ICI pilling box method, and G Methods B/T 4802.3 (hereinafter referred to as GB), ISO 12945-1 (hereinafter referred to as ISO ) and JSL1076 A (hereinafter referred to as JIS) are mnow tested. For comparison, the details are as follows:

1. Pilling test box

The GB complies with the provisions of the ISO standard for the rotary box. The size is 235mm cube and the thickness of the cork liner is 3.2mm. The replacement cycle is not specified; JIS standard states that the size is 23 cubic mm, the cork liner thickness is (3±0.2)mm, the density is (0.25±0.03)g/mm2, the tensile strength is 980 kPa (10 kgf/mm2) and use limit is 1500 hours. Density, tensile strength and service limit are not specified in GB and ISO standards. The speeds specified in the three standards are all (60 ± 2) rpm.

2. Polyurethane sample loading tube

GB conforms to the ISO standard for the sample loading tube, the tube length (140 ± 1) mm, the thickness (3.2 ± 0.5) mm, the diameter exis (31.5±1)mm, mass is (52.25±1)g; the JIS standard states that the tube length is 150mm, the thickness is 3mm, the outer diameter is 31mm, the mass is 51g, and the limit is 47g. Replace it immediately when damaged and make sure it has a certain hardness. It is specified as (42 ± 5).

3. Adhesive tape

According to GB and ISO standards, it is PVC tape with a width of 19 mm, and in JIS it is vinyl tape approximately 18mm wide.

GB and ISO standards state that the sample size is 125mm × 125mm. After sewing at a distance of 12mm from the edge, the two ends are each cut off by 6mm for the sewing deformation, turned over and placed on the sample loading tube, and there are two samples in each of the directions of warp and weft. The JIS standard states that the sample size is 10mm × 12mm. The sampleis wrapped around the sample tube and then sewn with cotton thread. There are two samples in the warp and weft directions.

4. Duration of test

In Go, it is recommended to spin 7200r for wool spinning and 14400r for worsted spinning; there is no uniform number of rotations in the ISO; 10h is usually defined for woven fabrics and 5h for knitted fabrics in JIS. For cashmere knitwear, 7200r for woolen spinning and 10800r for worsted spinning are generally used at home and abroad.

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