Abstract:Polyester filament yarn is an interlocked polymer fiber that is used for a variety of textile applications. It is a stro...
Polyester filament yarn is an interlocked polymer fiber that is used for a variety of textile applications. It is a strong and synthetic fiber that can be spun in either monofilament or multifilament form. It is a preferred fiber choice for fabrics because it offers a wide range of physical properties, including smoothness, thickness, and strength.
The demand for polyester filament yarn is increasing owing to their physical properties, price, and versatility. It is widely used for various apparel and home textile applications.
Filament yarns come in a variety of lengths, from short to long and can be twisted or untwisted. The longer lengths are grouped together in a woven fabric and are used as a base material for making the final product.
Depending on the length, these yarns may have different characteristics. Those made with longer fibres tend to be smoother, more lustrous and stronger than those with shorter fibres and those with short fibres are usually softer and easier to handle.
There are many different types of polyester yarns, all of which have different uses and properties. Some of them are designed to provide specific functions, such as water management and flexibility.
For instance, the crystallinity of the undrawn filaments in a yarn is determined by the temperature of the spinning process and can have an impact on the performance of the final yarn. The invention relates to a process in which the spinning temperature can be increased to a higher value than is normally used for such a yarn.
This increases the speed at which the yarn is spun without having to compromise on its other important features, such as strength and smoothness. However, it is crucial to ensure that the crystallinity of the undrawn polyester filaments does not exceed 16% at this winding speed.
In this case, the polyester filament yarn will not be stable and a high number of drawing operations will occur during production. This will lead to a decrease in the quality of the finished yarn, which will result in an increase in the manufacturing cost.
Another way of achieving the required level of strength is to use a pre-oriented polyester filament yarn. This can be either partially oriented or fully drawn, depending on the desired end product.
The most common types of polyester yarn are combed, worsted and carded. During the worsted process, the fibres are combed to give better alignment of the individual fibres. The worsted yarns are generally stronger and stiffer than combed or carded yarns.
It is important to understand the differences between the different types of yarns to be able to choose the best polyester filament yarn for a particular application. For example, if the product requires strong strength then it is best to select a high tenacity PFY.
Besides strength, it is also important to consider the amount of crimp and twizzle in the final product. These qualities are a result of the twisting and twizzing processes that are used to create the final polyester yarn. The twizzle and crimp in the yarn are an indication of how well the finished yarn is going to hold its shape during weaving.
