What Conditions Should Dacron Yarn Production Meet?

1, polyester yarn sales yarn should have a certain strength and extensibility
The strength of yarn is an important quality index of knitting yarn. Because yarns are subjected to tension and repeated loads during preparation and weaving, knitting yarn must be of a certain strength. In addition, in the process of knitting yarn into a circle, but also subjected to bending and torsion deformation, so it is also required that the knitting yarn has a certain extension, in order to facilitate the knitting process of bending into a circle, and reduce yarn breakage.
2, yarn should have good softness
The softness of knitting yarn is higher than that of knitting yarn. Because the soft yarn is easy to bend and twist, and make the knitted fabric coil structure uniform, clear and beautiful appearance, but also reduce the yarn break in the weaving process and the damage to the coil parts.
3, yarn should have a certain twist
In general, knitting yarn has a lower twist than knitting yarn. If the twist is too large, the softness of the yarn is poor, and it is not easy to be bent and twisted during weaving. It is also easy to produce kinks, causing defects and damaging the knitting needles. In addition, yarns with too much twist can affect the elasticity of the knitted fabric and skew the coil. However, the twist of knitting yarn can not be too low, otherwise it will affect its strength, increase the break in weaving, and the yarn is loose, so that the fabric is easy to pilling, reduce the wear performance of knitted fabric. Therefore, the correct choice of twist is an important way to choose yarn properly. Twist requirements vary according to the use of knitted fabrics.
Sweat cloth requirements smooth, tight, smooth surface, clear pattern, yarn twist to be larger, can be close to the same linear density with warp standards. The yarn twist of outer garment should be larger to enhance crispness and improve pilling. Cotton wool cloth, elastic cloth requirements feel soft, elastic, yarn twist should be slightly lower, generally using the same linear density weaving weft twist deviation. In order to make it easy to draw and even the thickness of the pile, the twist is required to be smaller.
The size of twist also varies with yarn density.