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Materials Used

hese four different synthetic fibers with different functions are the mainly material used for the heat resistance conveyor felt tube/conveyor felt belt/spacer sleeves/felt pads/felt strip/timing belt,can resist temperature from 180-600˚C for aluminum extrusion.


PBO, as the super-performance fiber of the 21st century, has excellent physical and mechanical properties and chemical properties, and has the strength and modulus of 2 times of the KEVLAR fiber and has the properties of meta-aramid heat-resistant and flame-retardant property, And the physical and chemical properties are well above Kevlar, which has been in the leading position in the field of high-performance fiber to date. A PBO filament with a diameter of 1 mm can be lifted to a weight of 450 kg, and the strength thereof is more than 10 times that of the steel wire fiber.

PBO fiber has four super special properties, namely strength, modulus, heat resistance and combustion resistance.


Kevlar (r) is a registered trademark of high performance fiber invented and produced by DuPont, and it is also a famous brand that DuPont is proud of. More than 30 years ago, Kevlar (r) was born in DuPont's laboratory as a kind of para-aromatic polyamide, which shows many excellent properties and a wide range of applications. The unprecedented and distinctive Kevlar (r) fiber, successfully invented by DuPont scientists, is more than five times stronger than steel at the same weight, changing the direction of industry experts and leaders looking to the future.

The product has soft feel, good fluffiness, drape, moisture absorption and permeability and high strength, wear resistance, good drape finish, color fastness, as well as fire carbonation and other excellent characteristics, so as to meet the quality requirements of high and medium grade flame retardant clothing and decorative fabrics.


Nomex is the trademark for a flame-resistant meta-aramid developed by DuPont. Nomex, like Kevlar is an aramid but Nomex is a “meta” aramid, and Kevlar is a “para” aramid. The variant “meta” just has a different location for the different compounds than the variant “para”. This makes Nomex have an good thermal, chemical and radiation resistance for a polymer material. For example the firefighters suits are made of Nomex because of its resistance to fire and chemicals… But this also makes Nomex to have a poorer strength and a lower resistance to heat than Kevlar. Nomex is made in USA and also Spain by Dupont. For the aluminum extrusion process it can withstand 450˚F / 230˚C.


Polyester is a synthetic polymer made of purified terephthalic acid (PTA) or its dimethyl esterdimethyl terephthalate (DMT) and monoethylene glycol. It doesn’t have high resistant to heat, that is why is normally used at the very end of the process where the profile is cooler. For the aluminum extrusion process it can withstand 300˚F / 150˚C.