Recycled Polyester Yarn's quality problems and solutions

In daily life, many places will use yarn, because of its strong comfort, is widely used in a variety of clothing fabrics. To protect the global environment, recycled polyester yarns are especially widely used. So, this article will take you together to analyze it.

Here is the content:

• The scope of recycled polyester yarns’ application

• Recycled polyester yarn’s quality problems and solutions

The scope of recycled polyester yarns’ application

Recycled polyester yarns, with many specifications, belongs to the full utilization of renewable resources, it has a broad market because of its low cost, good performance. There are many different varieties of recycled polyester fiber; such as ordinary fiber, hollow fiber, triangle silk, flame retardant fiber, and so on, is now generally used for furniture, toys of the filling material industry, bedding, clothing industry, cotton industry, sewing knitting industry.

Recycled Polyester Yarn’s quality problems and solutions

1. Due to the lack of hydrophilic structure between the molecules of recycled polyester yarns, the moisture recovery rate is small, the moisture absorption performance is poor, the oil content difference is large, and the electrical conductivity is poor. The spinning process is prone to electrostatic phenomenon, resulting in the carding cotton tin forest tangled, fiber hot melt on the surface of the needle cloth, unable to normal carding, defects increased in large numbers. Therefore, we should pay attention to humidification control in the spinning process and eliminate electrostatic phenomenon. The specific solutions are as follows. First, control the content of fiber oil agent. In summer and autumn, the oil content should be controlled at 0.10%~0.15%, and in winter and spring, the oil content should be controlled at 0.16%~0.20%. Small oil content is easy to generate static electricity, and large oil content is easy to block the pipeline. Second, fully humidify. Every 100 kg fiber is sprayed with water solution (antistatic agent contains 0.3% in water solution) at a ratio of 8% to fully balance the moisture recovery rate and reduce electrostatic phenomena. Third, improve the workshop relative humidity. The cleaning and linking process is controlled at 67%~70%, the roving process is controlled at 60%~65%, the spinning process is controlled at 60%, and the winding process is controlled at 65%~70%.

2. The performance of recycled polyester yarns varies greatly from batch to batch and from package to package, and fabric dyeing defects such as transverse and partial non-coloring are easy to occur. In the production practice, the fabric made of the same batch of different packages of fibers is dyed, and the color difference of the cloth surface is very obvious. Specific solutions are as follows. The first is to increase the mixing of multiple warehouses in the clearing process, to overcome the influence of the difference between lot and parcel on yarn quality, and to ensure the uniform mixing of fibers. Practice has proved that when 8 ~10 bins cotton mixer is used to mix cotton, dyeing transverse defects decrease by 70%, especially when the fiber fineness difference is large, the improvement effect is more obvious. The second is to increase the number of parallel tracks. The use of three parallel strips can improve the fiber elongation and parallelism and the mixing effect, which can effectively reduce the staining transverse defects.

NEXTILE attaches importance to product quality, takes customer satisfaction as the goal, and builds a superior company. If you need recycled polyester yarns, please contact us.

Tel: 86-0512-67484350

E-mail: info@nextilefiber.com/Sales@nextilefiber.com