Nomex

'Man made' meta-aramid fibre based cover material suited to high temperature embossing.

Typical Uses

• High temperature embossing

Key Features

• Withstands high temperature embossing conditions
• Enables high production speeds
• Good marking resistance due to high modulus of elasticity
• Increased productivity through greatly extended grinding intervals

Nomex® is a man-made fibre based roll cover material suited to high temperature embossing applications. Outstanding temperature resistance, along with excellent resistance to surface damage and high nip loads ensures minimum maintenance and a very long service life.

DuPont Approved
"DuPont certify that they consider RHL to be fully technically capable to manufacture filled rolls with Nomex®. We therefore recommend this company as an excellent source for long lasting Nomex® calender rolls."
DuPont de Nemours Int. SA, Geneva, Switzerland

Construction

Nomex® is a 'man-made' fibre based material. The material has a rigid and regular (meta-aramid) molecular structure. Because of the strong structural linkages, Nomex fibres are both chemically and thermally very stable and will not flow or melt even above 350°C. For this reason Nomex is suited to high temperature embossing where alternative backing roll materials would quickly break down.  

This unique constuction also gives Nomex® excellent marking resistance. Marking resistance and recovery are closely related to Modulus of Elasticity (the ability of the material to rebound to its original shape after being dented). The Nomex® structure has a high modulus of elasticity, which is maintained at elevated temperatures.  

Operational Benefits

• Outstanding temperature resistance (enabling the heated steel roll to be run up to 360°C)
• Excellent mark resistance due to high modulus of elasticity
• Outstanding service life, leading to lower operating costs
• Nomex can withstand high nip loads up to 450kN/m

Quality Benefits

• Enables high temperature processes
• Precise emboss
• Minimal dusting avoids contamination

RHL produces complete new Nomex® rolls or can refill existing filled rolls with Nomex® material. Nomex can be resurfaced using standard equipment such as diamond tool, abrasive belt or stone grinding.

Performance

* Maximum temperatures are for guidance purposes only. Operating rolls at high temperatures, speeds and line pressures may reduce roll cover life and risk premature failure. 

Brochure