Knitting requires higher evenness (the uniformity of yarn thickness), good flexibility, certain strength, extensibility, and twist (the yarn twist is relatively low). In the process of forming knitted fabrics on the knitting machine, the yarn is subject to complex Mechanical action, such as stretching, bending, twisting, friction, etc. In order to ensure the normal production and product quality, knitting yarn should meet the following requirements:

1. The yarn should have certain strength and extensibility

Yarn strength is an important quality index of knitting yarn. Since the yarn is subjected to certain tension and repeated loads during the preparation and weaving process, the knitting yarn must have a certain strength. In addition, the yarn is subject to bending and torsion deformation during the knitting process. Therefore, the knitting yarn is also required to have a certain degree of extensibility to facilitate bending into a loop during the knitting process and reduce yarn breakage.

2. The yarn should have good softness

3.The yarn should have a certain twist

Generally speaking, the twist of knitting yarn is lower than that of weaving yarn. If the twist is too large, the softness of the yarn will be poor, it is not easy to be bent or twisted during weaving, and it is easy to produce kinks, causing weaving defects and damage the knitting needles; in addition, the yarn with too large twist will affect the elasticity of the knitted fabric. , And make the coil skew. But the twist of the knitting yarn should not be too low, otherwise it will affect its strength, increase the breakage during weaving, and the yarn is bulky, making the fabric easy to fluff and pilling, and reduce the wearability of the knitted fabric. Therefore, the correct choice of twist is an important way to select yarns reasonably. Different uses of knitted fabrics have different twist requirements.

4. The linear density of the yarn should be uniform and the yarn defect should be less

The uniformity of yarn linear density,means the uniformity of yarn evenness, is an important quality indicator of knitting yarn. Evenly even yarn is beneficial to knitting and ensuring the quality of the fabric, so that the loop structure is uniform and the cloth surface is clear. If there are thick knots on the yarn, the knitting will not pass smoothly, resulting in yarn breakage or damage to the machine parts, and it is easy to form "stripes" and "clouds" on the cloth surface, reducing the quality of the knitted fabric; For details, the strength is insufficient here, and the ends are easily broken, which affects the quality of the fabric and reduces the productivity of the machine. Because there are multiple loop forming systems on the knitting machine to feed yarn into loops at the same time, it is not only required that the yarn thickness of each path is uniform, but also the thickness difference of the yarns between the paths must be strictly controlled, otherwise horizontal stripes will be formed on the cloth surface. Defects such as shadows reduce the quality of the fabric.

5.Yarn should have good moisture absorption

The ability of yarn to absorb moisture in the air is called hygroscopicity . The moisture absorption capacity of various fibers varies greatly, and the amount of moisture absorption varies with the temperature and humidity of the air. The yarn used for knitting production should have a certain degree of moisture absorption. Under the same relative humidity, the yarn with good hygroscopicity, in addition to its better conductivity, is also conducive to the stability of the yarn twist and the improvement of the extensibility, so that the yarn has good weaving performance.

The knitting yarn should be as free of impurities and oil stains as possible, and should be very smooth. The non-smooth yarns can damage the machine parts severely, easily damage the machine parts, and there are many flying flowers in the workshop, which not only affects the health of workers, but also affects the productivity of knitting machines and the quality of fabrics.

We strictly control the quality  from raw material purchase ，the nylon yard we used on warp knitting lace and embroidery lace are purchased from Fuzhou Grand Slam Textile Co., Ltd.