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The staple fiber production can not be separated from the PA masterbatch
Release date: [2018/4/25] Read total of [985] times

Today, to discuss the application of PA masterbatches on various kinds of staple fibers, we must first know that not only PA masterbatches affect the quality of staple fiber production, but also many other factors.

Spinning temperature, spinning pressure, cooling, spinning speed, and the manner of drying and injecting the PA masterbatch are different. For the application direction of the masterbatch, the processes of the conventional spinning and the long fiber POY and FDY are compared. .

    1. The size of the color particles must be strictly controlled, and the particle size should be equal to that of the slices.

Because most manufacturers of polyester staple fiber use vacuum drum drying to mix masterbatch, in addition to requiring that the masterbatch has a uniform appearance, no strips and double grains, it must be as close as possible to the granularity of the polyester chips used. Seek uniformity. At the same time, dust should be reduced as much as possible to prevent sticking to the drum wall, causing troubles in cleaning and color changing. In addition, drum drying is prone to static electricity, the color of masterbatch is different, and the static electricity generated is also slightly different. Some masterbatch varieties are adsorbed on the drum wall and are easy to produce color difference. Yuetai pearl powder, masterbatch pearl powder, ABS pearl powder.

2. Masterbatch has better resistance to migration

In the process of short fiber processing, post-processing and application, they often encounter heat setting, heat treatment after interweaving, set dyeing process, must require the masterbatch heat transfer migration to be excellent, otherwise it will cause staining phenomenon And affect the quality of fabrics.

3. Oil resistance

Because the staple fiber needs to be subjected to bundle and guide wire stretching during post-processing, in order to improve the cohesion of the tow, it is not necessary to perform oiling on the second tanker, and the oiling rate is higher than that of the longer fiber; In order to increase the cohesion between the fibers and the ability to form yarns, it is necessary to re-oil and prevent static electricity to improve spinnability. The relatively high oil content of staple fiber is relatively high, so it is required that the selected oil and oil resistance of the dye is better, otherwise it will cause the pollution of the spinning oil bath, and the bleed phenomenon occurs in the finishing process of the fabric.

4. Alkali resistance

Staple fiber color yarns are often used in multi-colored yarns. When alkali reduction treatment is performed on fabrics, the masterbatch is often required to be alkali-resistant. Otherwise, color tone and style change may occur after alkali treatment. Alkaline pearl powder, Yue Tai pearl powder.

5. Heat temperature

The spinning temperature of the staple fiber is relatively high, so the thermal stability of the toner is also required to be higher, and the selection of the toner needs to be more strict. High-temperature 800 °C pearl powder, instead of Thai pearl powder, Merck pearl powder.

6. Filtration, spinnability requirements

The staple fiber color yarns are usually made by conventional techniques, and the spinning speed is not high, mostly in the range of 1000 to 1500 m/min, but the draw multiple is 3.5 to 4 times, and the single-filament fineness is (1.5 to 2) x 10-3. The g/m profiled yarns have a larger amount of masterbatch in the range of 5% to 7%, so the masterbatch spinnability requirement is no less than that of the long fiber masterbatch.

PA masterbatch plays a crucial role in the production of staple fiber.