What are the differences between polypropylene FDY network filament and polyester network filament?

The differences between polypropylene FDY network filament and polyester network filament are as follows:

Raw materials and production processes

polypropylene FDY network filament: It is mainly made of polypropylene, extruded by a screw extruder, spun by a spinneret, then stretched and shaped to form polypropylene FDY filament, and finally processed through a network. During the production process, polypropylene chips are melted into a liquid state at high temperatures and extruded through a spinneret to form fine filaments. Then, through stretching and other processes, the molecular chains are oriented and arranged to enhance the strength and performance of the fibers.

Polyester web filament: It is usually made from polyethylene terephthalate (PET) as raw material and processed through similar techniques such as melt spinning, stretching and web processing. After PET chips are heated and melted, by precisely controlling parameters such as spinning temperature, speed and stretching ratio, polyester fibers with specific properties are formed. Then, after network processing, polyester network filaments are obtained.

Performance characteristics

Physical properties

Polypropylene FDY network filament: It is lightweight with a density of approximately 0.91g/cm³, making it one of the lightest varieties among common chemical fibers. It has relatively high strength, with little difference in strength between the dry and wet states. However, compared with polyester, its strength is slightly lower. It has good wear resistance and dimensional stability, and a relatively low thermal shrinkage rate.

Polyester network filament: High strength, high initial modulus, crisp fibers, and excellent anti-wrinkle performance; Its wear resistance ranks first among chemical fibers. The density is about 1.38g/cm³, which is heavier than polypropylene. It has good heat resistance and can maintain stable performance at higher temperatures.

Chemical properties

Polypropylene FDY network filament: It has good chemical stability and is resistant to general acids and alkalis except for strong oxidants such as concentrated nitric acid and concentrated sulfuric acid. It does not absorb moisture and has an extremely low moisture regain rate. It can remain dry in a humid environment and is not prone to mold or insect damage.

Polyester network filament: It has good chemical stability and strong acid and alkali resistance, but it may be eroded to a certain extent under strong alkaline conditions. It has relatively low hygroscopicity and poor dyeing performance, so special dyeing techniques and dyes need to be used for dyeing.

Appearance characteristics

Polypropylene FDY network filament: It usually has a soft and smooth hand feel, with relatively low gloss, and is semi-transparent or slightly yellow. The surface of the fabric made is relatively fine, but its luster is not as bright as that of polyester fabric.

Polyester network filament: With a smooth surface and high gloss, it can present a bright luster and is often used in the production of fabrics with gloss requirements. Through different processing techniques, polyester network filaments can have various gloss effects, such as matte, semi-matte and glossy, etc.

Application field

Polypropylene FDY network filament: Due to its light weight, warmth retention, and resistance to seawater corrosion, it is often used to make sportswear and outdoor equipment, such as mountaineering suits and sleeping bags. In the field of industrial textiles, it can be used to manufacture geotextiles, ropes, fishing nets, etc. In the home textile field, it can be used to produce bedding, curtains, etc.

Polyester network filament: Widely used in the clothing industry, especially in high-end clothing, professional wear and sportswear, etc. Due to its crisp texture, anti-wrinkle properties, easy washing and quick drying, it can maintain a good wearing appearance and comfort. In the field of decoration, it can be used to make curtains, sofa covers, carpets, etc., and can provide rich color and luster effects. In industrial applications, it is often used to manufacture tire cord, industrial filter cloth, insulating materials, etc.

Price

Polypropylene FDY network filament: The raw material cost is relatively low, and the production process is also relatively simple, so the price is usually cheaper than that of polyester network filament.

Polyester network filament: Due to its wide application, large production scale and relatively low cost, however, factors such as raw materials and energy consumption during the production process make its price slightly higher than that of polypropylene FDY network filament. However, the specific price will also be affected by factors such as market supply and demand, product quality and brand.

Guangdong Modern High-tech Fiber Co., Ltd. is a professional manufacturer engaged in the development, production and sales of polypropylene fiber. Guangdong Modern High-tech Fiber Co., Ltd. has advanced production and research and development equipment, perfect process flow, scientific management framework, and a high-quality technical team, which is recognized as a national high-tech enterprise.