Aramid 1313 sewing thread is used for stitching the flame-retardant layer of bulletproof vests and gloves.

Aramid 1313 sewing thread

The product introduced in this post is Aramid 1313 sewing thread 402.

This sewing thread is made from meta-aramid fiber, with a yarn count of 40s/2 and a basis weight of 200g.

Characteristics of aramid 1313 sewing thread:

1. Excellent high-temperature resistance and flame retardancy

Continuous heat resistance: Can maintain stable performance in long-term high-temperature environments ranging from 220°C to 250°C.

Extreme heat resistance: It can withstand short-term temperatures up to 300°C and begins to carbonize and decompose only when exposed to temperatures exceeding 370°C.

Self-extinguishing when removed from the flame: It will not continue burning once removed from the flame, and it does not drip or melt during combustion, providing better protection for personal safety.

2. Stable chemical and physical properties

It has excellent chemical corrosion resistance and radiation resistance.

High strength and durability: High strength and excellent wear resistance. Even after multiple washes, it retains more than 85% of its original strength.

3. Excellent electrical insulation and radiation resistance

Excellent electrical insulator: Aramid 1313 possesses inherent dielectric strength and maintains outstanding electrical insulation performance even under high-temperature and high-humidity conditions.

Outstanding radiation resistance: It exhibits strong resistance to alpha, beta, gamma rays, and ultraviolet radiation.

Characteristics of aramid 1313 sewing thread:

1. Special protective clothing field

Firefighting protective suits are the crucial link that serves as firefighters’ “second skin.” They must withstand direct flame exposure and intense thermal radiation at high temperatures, ensuring that they won’t melt or shrink under extreme conditions. Moreover, these suits must maintain their overall airtightness and structural integrity to safeguard firefighters’ lives.

Military and police combat uniforms and tactical gear: Used for sewing military combat uniforms, flame-retardant layers for body armor, tactical gloves, helmet covers, and more. In addition to flame retardancy, their high strength and abrasion resistance ensure the durability of the equipment even during intense tactical maneuvers.

Industrial high-temperature protective clothing: such as flame-retardant garments worn by workers in the metallurgical, power, and petrochemical industries. In hazardous situations like arc flashes and metal splashes, aramid sewing threads can prevent the garment from tearing open due to melted seams, thereby providing continuous protection.

Other specialized protective applications: such as racing suits, aviation ground crew uniforms, and other scenarios requiring long-lasting flame-retardant protection.

2. High-temperature industrial filtration field

In environmental protection and industrial production, aramid 1313 sewing thread is used to sew high-temperature flue gas filter bags (such as dust removal bags). These filter bags operate continuously in harsh environments characterized by high temperatures and highly corrosive flue gases in industries including cement, steel, carbon black, and asphalt mixing. Under these conditions, the sewing thread must withstand sustained high temperatures, acidic and alkaline corrosion, abrasive wear caused by dust particles, and repeated impact forces generated by the system’s pulse-jet cleaning process. Once the sewing thread breaks, the entire filter bag will become ineffective; therefore, its resistance to high temperatures, chemical corrosion, and tensile strength are of paramount importance.

3. Electrical Insulation and Composite Materials field

Aramid 1313 fiber itself is an excellent electrical insulating material. Although aramid paper or short fibers are more commonly used in this field, sewing thread made from aramid fiber can be employed for stitching and securing specialized insulating components, or as binding wire for high-performance coils. It maintains stable insulation performance even under harsh electrical conditions such as high temperatures and humidity, making it suitable for use in advanced manufacturing sectors including motors, transformers, and insulation systems for new-energy vehicles.

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