Product Description:
6640 NMN insulation paper is a three-ply flexible laminated consisting of PET film coated on both sides with Dupont nomex paper.
Product Advantage:
- Class F insulation (155°C)
- Excellent Heat Resistance, dielectric property and Mechanical Strength.
- Good cutting and overload resistance, high stiffness. Good compatibility with insulation varnish.
Product Application:
- Slot Insulation
- Phase to phase insulation
- Turn-to -turn insulation in low or medium voltage electrical motors insulation system
- Interlayer insulation in transformers and other electrical machines and appliances.
NMN6640 Nomex /Mylar/ Nomex aramid insulation paper is a kind of three-
layer flexible laminate in which the ourter-layer Dupont Nomex paper
is bonded to either side of Mylar( polyester film).
1. Descriptions
· Temp.class F (155 °C )
· Excellent heat resistance,dielectric property and mechanical strength
· Good cutting and overload resistance, high stiffness.Good compatibility with insulation varnish
· As slot, interturn and liner insulation for F-grade motors and electric appliances
1. Compositions:
Inner layer is Mylar( polyester film)
Outer layers are Dupont Nomex paper( Aromatic polyamide fiber paper)
3. Featurers:
High thermal resistance and tensile strength, Super edge tear resistance and electrical property
4. Applications
It is widely used as the slot insulaton and insulation between phases
for F- grade electric motors and other electric equipment insulaiton,based on slot, phase, interturn or liner
5. Availabilities:
· Shape: roll, sheet, strip
· Standard Thickness: 0.15mm, 0.20mm, 0.25mm, 0.30mm, 0.35mm, 0.40mm
· Standard Width: 914mm
Item | Unit | Value |
Nominal Thickness | mm | 0.15 | 0.18 | 0.20 | 0.23 | 0.25 | 0.30 | 0.35 |
Thickness Tolerance | mm | ±0.02 | ±0.03 |
Norminal Grammage | g/squaremeter | 180±25 | 210±30 | 240±30 | 260±35 | 300±40 | 350±50 | 430±50 |
Tensile Strength | Lengthwise | Not Bended | N/10mm | >150 | >160 | >180 | >200 | ≥220 | ≥270 | ≥320 |
Bended | >80 | >110 | >130 | >150 | ≥180 | ≥200 | ≥250 |
Crosswise | Not Bended | >90 | >110 | >130 | >150 | ≥180 | ≥200 | ≥250 |
Bended | >70 | >90 | >110 | ≥130 | ≥150 | ≥170 | ≥200 |
Elongation | Lengthwise | Not Bended | % | >10 | ≥12 |
Crosswise | Not Bended | >15 | ≥18 |
Breakdown Voltage | Not Bended | KV | >7 | ≥10 | ≥11 | ≥12 | ≥13 | ≥15 | ≥20 |
Bended | >6 | ≥8 | ≥9 | ≥10 | ≥12 | ≥13 | ≥16 |
Adhesive Property | Room Temperature | No delamination |
180±2°C 10min | No delamination,blister,or adhersive flow |
Temperature Index | °C | ≥155 |
Storage Life | month | 12 months,room temperature,dry and well-ventilated environment |
Remark | This product is produced in accordance with JB/T4061.1-1995 and is tested in accordance with GB/T5591.2-2002 |



