Dongguan Donghong New Materials Co., LTD. Polypropylene FDY Filament: A fully stretched fiber with stable performance!

Polypropylene FDY filament, also known as fully drawn polypropylene filament, is an important variety of polypropylene filament. "FDY" indicates that all stretching processes have been completed during its production, and it can be directly used for processing without further stretching treatment. It is made of polypropylene through a specific spinning process and plays a role in multiple fields with its stable performance.

The process of producing polypropylene FDY filament is closely linked. Firstly, the polypropylene chips are dried to remove moisture and prevent the formation of bubbles during spinning. The dried slices are fed into a screw extruder, where they melt into a uniform melt at high temperatures. After the melt flow is precisely controlled by a metering pump, it is extruded through the micro-holes of the spinneret to form filaments. After being cooled and solidified by the cooling air ring, the filaments immediately enter the multi-stage stretching device, where they are stretched to a specified multiple at a certain temperature, causing the molecular chains to be orderly arranged along the fiber axis. The stretched filament undergoes shaping treatment to eliminate internal stress, and is finally wound into a cylinder by a winding machine to form the finished polypropylene FDY filament. The entire process has strict control requirements for parameters such as temperature and stretching ratio to ensure the consistency of fiber performance.

The performance characteristics of polypropylene FDY filament are closely related to its production process. After full stretching treatment, its molecular arrangement is regular, with high breaking strength and elastic modulus. It is not prone to deformation under force and can maintain a stable shape. The linear density uniformity of the fibers is good, and the difference in thickness between single filaments is small, which is conducive to the stability of subsequent processing. Meanwhile, polypropylene FDY filament inherits the low density characteristic of polypropylene, and the products made from it are light in texture, easy to carry and use.

In terms of chemical properties, Polypropylene FDY Filament has good resistance to acids, alkalis and organic solvents, and its performance is not easily changed when in contact with common chemical substances. Wear resistance is also one of its advantages. Even after multiple frictions, it can still maintain structural integrity and extend its service life. However, it has poor hygroscopicity and hardly absorbs water. When used in a humid environment, it will not increase in weight due to water absorption, but when used directly against the skin, it may cause a stuffy and hot feeling. In terms of heat resistance, polypropylene FDY filament tends to soften at high temperatures, and the usage temperature needs to be controlled within a certain range.

Polypropylene FDY filament comes in various forms and can be made into products with different linear densities as required, ranging from fine denier to coarse denier, to adapt to different application scenarios. The cross-section of fibers is mostly circular, but can also be made into triangular, star-shaped and other special-shaped cross-sections through special-shaped spinnerets. Special-shaped cross-sections can increase the specific surface area of fibers, improve their luster and air permeability.

In terms of application directions, polypropylene FDY filament has a relatively wide range of uses. In the textile field, it can be used to weave various woven and knitted fabrics, such as casual wear fabrics and decorative fabrics, etc. By taking advantage of its crisp hand feel and good shape retention, it can enhance the appearance of products. In the industrial field, due to its strength and chemical resistance, it can be used to make filter materials and is suitable for certain liquid and gas filtration scenarios. It can also be used as an industrial thread for sewing or binding light industrial products.

In the field of decoration, polypropylene FDY filament can be used to make curtains, tablecloths, etc. Its wear resistance and color fastness can meet the long-term usage requirements. In addition, it can also be blended with other fibers to improve the overall performance of the fabric. For instance, blending with cotton fibers can enhance the stiffness of the fabric, and blending with polyester can increase its wear resistance.

When using Polypropylene FDY Filament, it is necessary to play to its strengths and avoid its weaknesses. Due to its poor moisture absorption, it can be blended with moisture-absorbing fibers when making close-fitting clothes. During the processing, the temperature needs to be controlled to prevent the fibers from softening and deforming due to high temperatures. When exposed to sunlight for a long time, the limitation of its light resistance should be considered, and anti-aging additives should be added if necessary. When storing, it should be placed in a dry and well-ventilated area to prevent dust from adhering and affecting its use.

With the advancement of process technology, the performance of polypropylene FDY filament has been continuously optimized. By adjusting the spinning parameters, varieties with special functions, such as high shrinkage and anti-static types, can be produced, further expanding its application space and maintaining its important position in the polypropylene product system.

Dongguan Donghong New Materials Co., Ltd. was founded in 1991 and is located in the 冚 lower industrial zone, Wentang brick kiln, Dongcheng district, dongguan City, guangdong Province. It is a medium-sized enterprise specializing in the production of various types of polypropylene yarn. Currently, the company has over 100 employees. Our company now has more than 20 polypropylene filament production lines, forming an annual production capacity of 10,000 tons of polypropylene yarn. The market share ranks among the top in the same industry.