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Polyester film/polyester fibre non-woven fabric flexible laminate (DMD) is a three-layer flexible laminate in which polyester fibre non-woven fabric(D) is bonded to the two sides of Polyester film(M). This product has excellent electrical insulating, heat resistance, mechanical strength and impregnated property. It is suitable for slot insulation, interphase insulation and liner insulation in Y-series electric motor and electric apparatus. Heat resistance is class B.

1 Technical requirements

1.1 DMD has two types according to the nominal thickness of the polyester fibre non-woven fabric.(Shown in Form 1)

                                                                                                      Form 1

 

Type

Nominal thickness of  polyester fibre non-woven  fabric(D) 

Usage

6630

0.05

 As per Clause 215 of IEC15C, the product consists of two-layer of polyester fibre non-woven fabric(D) and polyester film stipulated in IEC 674-3-2, it has high dielectric property.  It is suitable for the insulating process of mechanized insert slot.

6630A

0.050.10

6630A is more flexible than 6630,it is suitable for the process of handed insert slot.

1.2 General requirements

The general requirements are in accordance with Clause 2.1, 2.2, 2.3 and 2.4 in GB 5591.1-1985.

1.3 Dimension

Nominal width: 1000mm       Nominal weight: 50kg5kg

The splices should be no more than 4 in one roll.

1.4 Properties

Properties are as shown in Form 2, Form 3

                                                                           Form 2  6630 Properties

No.

Properties

Units

Values

1

Nominal thickness

mm

0.15

0.18

0.20

0.23

0.25

0.30

0.35

0.40

0.45

2

Thickness tolerance

mm

0.020

0.025

0.030

0.030

0.030

0.030

0.035

0.040

0.045

3

Nominal grammage and tolerance 

g/m2

14020

19028

22033

26039

30045

35052

42563

50075

56084

4

Film nominal thickness

µm

50

75

100

125

150

190

250

300

350

5

 

Tensile

strength

 

MD

No bending

N/10mm

Width

80

120

140

180

190

270

320

340

370

After bending

80

105

120

150

170

200

300

320

350

 

TD

No bending

80

105

120

150

170

200

300

320

350

After bending

70

90

100

120

130

150

200

220

250

6

 

Elongation

 

MD

No bending

%

15

-

 

After bending

10

5

3

 

TD

No bending

20

-

-

After bending

10

5

2

7

Breakdown voltage

kV

6

7

9

10

12

15

18

20

22

8

Bonding property  at room temp.

-

No delamination

9

Bonding property at 1552 10min

-

No delamination, no bubble, no adhesive flow

                                                                                              Form 3   6630A Properties

No.

Properties

Units

Values

1

Nominal thickness

mm

0.20

0.23

0.25

0.30

0.35

0.40

0.45

2

Thickness tolerance

mm

0.030

0.030

0.030

0.030

0.035

0.040

0.045

3

Nominal grammage and tolerance 

g/m2

20030

22030

25037

30040

34050

40057

47066

4

Film nominal thickness

µm

75

75

100

125

150

190

250

5

 

Tensile

strength

 

MD

No bending

N/10mm

Width

120

130

150

170

200

300

340

After bending

105

115

130

150

180

220

300

 

TD

No bending

105

115

130

150

180

220

300

After bending

95

100

120

130

160

200

220

6

Elongation

 

MD

No bending

%

10

-

-

After bending

10

5

3

TD

No bending

15

-

-

After bending

15

5

2

7

Breakdown voltage

kV

8

8

10

11

11

16

19

8

Bonding property  at room temp.

-

No delamination

9

Bonding property at 1552 10min

-

No delamination, no bubble, no adhesive flow

2 Testing Method

2.1 General requirements should be checked by visual observation

2.2 Measure its width with the ruler whose precision is 1mm.

2.3 Property requirements should be as per GB 5591.2-1985.

 

3 Inspection, marks, package, transportation and storage

3.1 Inspection items are as per Clause 1.1, 1.2, and 1.3, as well as Item 2, 5, 7, 8 of Form 2 or Form 3 in Clause 1.4.

3.2 The other items are as per GB 5591.1-1985

 

4 Remarks

The properties ( mechanical strength, breakdown voltage and flexibility-stiffness ) of this product are different according to the nominal thickness of the polyester film are mainly The thickness of the polyester film should be identified in purchasing order or contract.

                                                                                      TJPFTZ L.X. INTERNATIONAL TRADING CO.,LTD.  
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