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Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper

Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper

Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper Featured Image
  • Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper
  • Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper
  • Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper
  • Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper
  • Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper

short description:

6641 Polyester film/polyester non-woven flexible laminate (Class F DMD) is a three-layer flexible composite insulation paper made of high melting-point polyester film and excellent hot-rolling polyester non-woven fabric. Each side of the polyester film (M) is bounded by one layer of polyester non-woven fabric (D) with Class F adhesive. The thermal class is F class,  It is also called as  6641 F class DMD or Class F DMD insulation paper.


Product Detail

Product Tags

With state-of-the-art technologies and facilities, strict good quality regulate, reasonable cost, exceptional assistance and close co-operation with prospects, we’re devoted to supplying the top benefit for our customers for Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper, We are keeping chasing WIN-WIN situation with our clients. We warmly welcome clients from all over the world coming over for a visit and establishing long term relationship.
With state-of-the-art technologies and facilities, strict good quality regulate, reasonable cost, exceptional assistance and close co-operation with prospects, we’re devoted to supplying the top benefit for our customers for China Insulation Paper, Insulation Materials, To make every client satisfied with us and achieve win-win success, we will continue to try our best to serve and satisfy you! Sincerely looking forward to cooperating with more overseas customers based on mutual benefits and great future business. Thank you.

6641 Polyester film/polyester non-woven flexible laminate (Class F DMD) insulation paper is a three-layer flexible laminate made of high melting-point polyester film and excellent hot-rolling polyester non-woven fabric. Each side of the polyester film (M) is bounded by one layer of polyester non-woven fabric (D) with Class F adhesive.

DMD(1)
复合6641 F-DMD(6)(1)

Product Features

6641 F-class DMD flexible composite insulation paper has excellent thermal resistance, electrical, mechanical and impregnated properties.

Applications & Remarks

6641 F-class DMD insulation paper has such advantages: lower price, excellent flexibility, high mechanical & electrical properties, convenient application. It has also good compatibility with many kinds of impregnating varnish.

It is suitable for slot insulation, inter phase insulation and liner insulation in F-class electric motors.

According to customer’ request, we can  also produce such two-layer or five-layer flexible composite as  F-class DM, F-class DMDMD,etc.

Insulation for electric motor
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Supply Specifications

Nominal width：1000 mm.

Nominal weight: 50+/-5kg /Roll. 100+/-10kg/roll, 200+/-10kg/roll

The splices shall not be more than 3 in a roll.

Color: white, blue, pink or with D&F printed logo.

Technical Performances

The standard values for 6641 are shown in Table 1 and relevant typical values shown in Table 2.

Table 1: Standard  performance values for 6641 F-class DMD  insulation paper

No.          Properties Unit                                     Standard  performance values
1 Nominal thickness mm 0.15 0.18 0.2 0.23 0.25 0.3 0.35 0.4
2 Thickness tolerance mm ±0.020 ±0.025 ±0.030 ±0.030 ±0.030 ±0.035 ±0.040 ±0.045
3 Grammage (for reference) g/m2 155 195 230 250 270 350 410 480
4 Tensile strength MD Not folded N/10mm ≥80 ≥100 ≥120 ≥130 ≥150 ≥170 ≥200 ≥300
After folded ≥80 ≥90 ≥105 ≥115 ≥130 ≥150 ≥180 ≥220
TD Not folded ≥80 ≥90 ≥105 ≥115 ≥130 ≥150 ≥180 ≥200
After folded ≥70 ≥80 ≥95 ≥100 ≥120 ≥130 ≥160 ≥200
5 Elongation MD % ≥10 ≥5
TD ≥15 ≥5
6 Breakdown voltage Room temp. kV ≥7.0 ≥8.0 ≥9.0 ≥10.0 ≥11.0 ≥13.0 ≥15.0 ≥18.0
155℃+/-2℃ ≥6.0 ≥7.0 ≥8.0 ≥9.0 ≥10.0 ≥12.0 ≥14.0 ≥17.0
7 Bonding property at room temp － No delamination
8 Bonding property at 180℃+/-2℃, 10min － No delamination,no bubble,no adhesive flow
9 Bonding property when affected by damp － No  delamination
10 Temperature index － ≥155

Table 2: Typical performance values for 6641 F-class DMD  insulation paper

No. Properties Unit Typical performance values
1 Nominal thickness mm 0.15 0.18 0.2 0.23 0.25 0.3 0.35 0.4
2 Thickness tolerance mm 0.005 0.005 0.01 0.01 0.01 0.01 0.01 0.01
3 Grammage g/m2 138 182 207 208 274 326 426 449
4 Tensile strength MD Not folded N/10mm 103 137 151 156 207 244 324 353
After folded 100 133 151 160 209 243 313 349
TD Not folded 82 127 127 129 181 223 336 364
After folded 80 117 132 128 179 227 329 365
5 Elongation MD % 14 12
TD 18 12
6 Breakdown voltage Room temp. kV 8 10 12 12 14 15 16 28
155±2℃ 7 9 11 11 13 14 14.5 25
7 Bonding property at room temp － No delamination
8 Bonding property at 180℃+/-2℃,  10min － No delamination, no bubble, no adhesive flow
9 Bonding property when affected by damp － No delamination

Test Method

As per the stipulations in Part Ⅱ: Test Method, Electrical Insulating Flexible Laminates, GB/T 5591.2-2002 (MOD with IEC60626-2: 1995). 

Packing And Storage

6641 is supplied in rolls, sheet or tape and packed in cartons or/and pallets.

6641 should be stored in clean & dry warehouse with temperature below 40℃. Keep away from fire, heat and direct sunshine.

Production Equipment

We have tow lines, the production capacity is 200T/month.

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With state-of-the-art technologies and facilities, strict good quality regulate, reasonable cost, exceptional assistance and close co-operation with prospects, we’re devoted to supplying the top benefit for our customers for Top Suppliers China Electrical Insulating Composite Foil 6641 F Class DMD Insulation Paper, We are keeping chasing WIN-WIN situation with our clients. We warmly welcome clients from all over the world coming over for a visit and establishing long term relationship.
Top Suppliers China Insulation Paper, Insulation Materials, To make every client satisfied with us and achieve win-win success, we will continue to try our best to serve and satisfy you! Sincerely looking forward to cooperating with more overseas customers based on mutual benefits and great future business. Thank you.

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