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What are the uses of polyester fibers in the non textile field
source：www.kingcharmgroup.com | Release time：2025-12-081. Packaging industry: core application areas
Plastic containers: PET is the core raw material for making mineral water bottles, beverage bottles, edible oil barrels, and food preservation boxes. The containers made of PET are transparent, smooth, lightweight, have good pressure resistance, and are non-toxic and odorless, meeting food contact safety standards; Some high-strength PET containers can also be used for packaging chemical reagents and cosmetics.
Polyester film (PET film): BOPET film that has undergone biaxial stretching treatment has the characteristics of high transparency, high toughness, and good temperature resistance. It is widely used as a substrate for food packaging (such as composite packaging film for instant noodles and snacks), label stickers, adhesive tape base films, and lithium battery separators.
2. Industrial manufacturing field: Structure and functional components
Tire cord: Polyester fiber cord has high strength and good dimensional stability, and can replace traditional cotton cord. It is used as the skeleton material for automotive tires, improving their wear resistance and fatigue resistance, and extending their service life.
Industrial filtration materials: filter cloth and mesh made of polyester fiber, acid and alkali resistant, high temperature resistant (can withstand high temperatures of about 130 ℃), used for dust filtration and wastewater treatment in the chemical, metallurgical, and cement industries, with high filtration efficiency and easy cleaning.
Conveyor belts and canvas: Polyester fiber canvas has high strength and tensile resistance, and is used to make industrial conveyor belts and core layers for conveyor belts. It is suitable for heavy-duty scenarios such as mines and ports, and is not easily deformed or broken.
3. In the field of electronic appliances: insulation and protective components
Insulation material: PET film has excellent insulation properties and can be used as insulation gasket and winding wrapping tape for motors, transformers, and capacitors to prevent circuit short circuits and improve electrical safety during operation.
Electronic component substrate: used for making flexible circuit boards (FPCs), mobile phone screen protectors, and backlight films for LCD displays, with both flexibility and scratch resistance.
Wire and cable sheath: polyester fiber woven sheath, wrapped in the outer layer of wire and cable, plays the role of wear resistance, aging resistance and corrosion resistance, and is suitable for outdoor or complex industrial environment cables.
4. In the field of architecture and engineering: protective and reinforcement materials
Geosynthetic materials: Geotextiles and geogrids made of polyester fibers, which have the characteristics of high strength, UV resistance, and soil corrosion resistance, are used for reinforcing highway and railway roadbeds, preventing soil erosion, and improving roadbed stability; It can also be used for dam seepage prevention and drainage in hydraulic engineering.
Building waterproofing material: PET modified asphalt waterproofing membrane is a commonly used material for waterproofing roofs and basements in buildings. It has strong weather resistance and a service life of up to 15-20 years, which is superior to traditional asphalt membranes.
Soundproofing and insulation materials: Soundproofing cotton and insulation cotton made of hollow polyester fibers can be used for filling building walls and ceilings, with the effects of sound insulation, thermal insulation, flame retardancy, and environmental protection without formaldehyde.
5. Other special fields
Aerospace: High performance polyester fiber composite material, lightweight and high strength, can be used for the production of aircraft interior components and satellite antenna brackets, reducing the weight of aircraft.
Medical field: Medical grade polyester fiber can be used to make surgical sutures and artificial blood vessel stents. It has good biocompatibility, is not prone to rejection reactions, and can be gradually degraded and absorbed by the human body (partially modified polyester).
Fisheries and Agriculture: Fishing nets and aquaculture cages made of polyester fibers are resistant to seawater corrosion and ultraviolet radiation, and have a much longer service life than traditional fishing nets; Sunshade nets and insect proof nets in agriculture are often made of polyester fibers, which are lightweight and durable.
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