Disadvantages of Polyester Filament Yarn

Various polyester filament yarns are available in the market. These filament yarns are used in a variety of end uses such as in curtains, bedding, car seats, and home furnishing outfits. Polyester filament yarn can be produced using different processes and materials. In particular, it can be produced using a melt-spinning process. However, there are some disadvantages associated with this process. These include difficulty in smooth winding, formation of fluffs, and breakage of filament yarn. In addition, the physical properties of the filament yarn may also change over time. These disadvantages may lead to a decrease in production efficiency.

The polyester filament yarn produced by the present invention is produced with an elongation-enhancing agent. This elongation-enhancing agent is made up of tiny particles that can be located in the deep inner portion of the extruded filamentary stream. This agent is responsible for improving the winding performance of the filamentary stream. This particle can also act as a roller for the polyester resin. It is also capable of reducing the friction between the filaments and promoting elongation. The particles are also resistant to elongate-deformation. However, it is important to note that it is very hard to evenly distribute this particle in the polyester resin matrix. In fact, it may not serve as a stress-bearing material.

In addition, the filamentary stream is cooled at a relatively high speed. The result is a non-linear increase in viscosity. This non-linear increase may promote thinning of the filament yarn. In fact, this non-linear increase may promote thinning earlier than it would in an environment with a more linear increase in viscosity. Therefore, the final winding speed of the melt-spun filament yarn may be lower than in an environment with a linear increase in viscosity.

Another challenge in the production of polyester filament yarn is the fluctuation in the price of the raw materials used in the manufacturing process. In particular, the price of MEG, the main raw material used in the polyester production process, may change rapidly. This price volatility may limit the growth of the market. In addition, the prices of the major polyester resin, PTA, may also fluctuate. These fluctuations may result in an unfavorable drawing property of the polyester filament yarn. However, the filamentary stream is still able to achieve good processing performance. It can be produced with a thickness of 1.0 dtex or less.

The number of filament elongation-enhancing agent particles must be at least fifteen particles for every 100 mm2 of filament. The particle size must also be at least ten microns. The number of filament elongation-enhancing agents particles must also be at least ten times higher than the number of filaments in the melt-spun filament. In addition, the elongation-enhancing agent must be able to exhibit a stress-bearing effect on the melt-spun filament. It is also important to note that the stress-bearing effect of the elongation-enhancing agent may not be fully realized if the polyester resin is composed of polymers with a molecular weight greater than 200,000.