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Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F

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With dependable high quality approach, great reputation and excellent customer support, the series of products and solutions produced by our firm are exported to lots of countries and regions for Flexible Conductors, Aluminum Alloy Bus Bar, Liquid Cold Plate, We respect your enquiry and it truly is our honor to operate with each friend around the world.
Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F Detail:

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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Product detail pictures:

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F detail pictures

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F detail pictures

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F detail pictures

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F detail pictures

Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F detail pictures


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To constantly improve the management system by virtue of the rule of "sincerely, good faith and quality are the base of enterprise development", we widely absorb the essence of related products internationally, and constantly develop new products to meet the demands of customers for Excellent quality Pet Film Nomex Paper Flexible Composite - 6641 F-class DMD flexible composite insulation paper – D&F , The product will supply to all over the world, such as: Argentina, Austria, Barbados, We taking advantage of experience workmanship, scientific administration and advanced equipment, ensure the product quality of production, we not only win the customers' faith, but also build up our brand. Today, our team is committed to innovation, and enlightenment and fusion with constant practice and outstanding wisdom and philosophy, we cater to the market demand for high-end products, to do professional products.
  • In China, we have many partners, this company is the most satisfying to us, reliable quality and good credit, it is worth appreciation.
    5 Stars By Roland Jacka from Montpellier - 2017.03.28 16:34
    The goods we received and the sample sales staff display to us have the same quality, it is really a creditable manufacturer.
    5 Stars By Mona from Netherlands - 2018.12.28 15:18