  toby@gdcalm.com       +86-0757-85890918
You are here: HOME » MATERIALS
Materials Used
These four synthetic fibers with different functions are the main material of heat resistance conveyor felt tube/conveyor felt belt/spacer sleeves/felt pads/felt strip/timing belt, which can resist temperature at 180-600˚C for aluminum extrusion.



PBO fiber has four super special properties, namely strength, modulus, heat resistance and combustion resistance.
PBO, as the super-performance fiber of the 21st century, has excellent physical, mechanical and chemical properties. Similar to meta-aramid, it also equips heat-resistant and flame-retardant property. And it has twice the strength and modulus of Kevlar fiber. However, 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.




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 a soft feel, good fluffiness, drape, moisture absorption and permeability and high strength, wear resistance, good drape finish, colorfastness, 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 good thermal, chemical and radiation resistance for a polymer material. For example, the firefighters' suits are made of Nomex because it is resistant to fire and chemical. But this also makes Nomex have a poorer strength and a lower resistance to heat than Kevlar. Nomex is made in the USA and also Spain by Dupont. For the aluminum extrusion process, it can withstand 450˚F / 230˚C.




Polyester is a synthetic polymer, which made of purified terephthalic acid (PTA) or dimethyl ester dimethyl terephthalate (DMT) and mono ethylene glycol. It doesn’t have high resistant to heat, that is why it usually 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.

Get In Touch With Our Team

Quick Links


Need some help?
Are you working on a project, and need to discuss a solution, Let us help you find the right product, Call us on 
telephone: +86-0757-85890918,  
 email us : toby@gdcalm.com
© 2019 Foshan Calm Industrial Felt Co., Ltd. All rights reserved. 粤ICP备17033937号    Site Map   Designed by Growthofficer.cn