6630/6630A B-class DMD flexible composite insulation paper

6630/6630A Polyester film/polyester non-woven fabric flexible laminate (DMD) is a three-layer flexible composite insulation paper in which each side of polyester film (M) is bonded with one layer of polyester non-woven fabric (D). The thermal resistance is Class B. Usually we call is as B class DMD insulation paper.

B-class DMD has two kinds of types according to the nominal thickness of the polyester fiber non-woven fabric.

 

Type	Nominal thickness of the polyester non-woven fabric	Description & Application
6630	0.05mm	As per Clause 215 of IEC15C, the product consists of two-layer of polyester non-woven fabric (D) and one-layer polyester film stipulated in IEC 674-3-2. It has high dielectric property.  It is suitable for the process of mechanized inserting slot.
6630A	0.05～0.10mm	6630A is more flexible than 6630. It is suitable for the process of hand-work inserting slot.

Product Features

B-class DMD has excellent electrical insulating properties, thermal resistance, mechanical strength and good impregnated property.

Applications

The thermal resistance is Class B. It is used for slot insulation, interphase insulation, interturn insulation and liner insulation in electric motors and electric appliances. 6630A is more flexible than 6630 and suitable for the process of handy insertion.

The properties (mechanical strength, breakdown voltage and flexibility and stiffness) of DMD are different for the different nominal thickness of polyester film. The thickness of the polyester film should be clearly indicated in purchasing order or contract.

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.

Packing, Transportation And Storage

6630 or 6630A is supplied in rolls, sheet or tape and packed in cartons or/and pallets

6630/6630A should be stored in clean & dry warehouse with temperature below 40℃. Keep away from fire, heat and direct sunshine.

The other requirements shall accord with the stipulations in Part I: Definition & General Requirement, Electrical Insulating Flexible Laminates, GB/T 5591.1-2002 (MOD with IEC60626-1: 1995).

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). 

Technical Performances

The standard values for 6630 are shown in Table 1 and relevant typical values shown in Table 2.
The standard values for 6630A are shown in Table 3 and relevant typical values shown in Table 4.

Table 1: Standard performance value for 6630 B-class DMD insulation paper

No.

Properties

Unit

Standard 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

+/-0.035

+/-0.040

+/-0.045

3

Grammage & Allowed tolerance*

g/m2

140+/-20

190+/-28

220+/-33

260+/-39

300+/-45

350+/-52

425+/-63

500+/-75

560+/-84

4

Nominal thickness for PET film

um

50

75

100

125

150

190

250

300

350

5

Tensile strength

MD

Not folded

N/10mm

≥80

≥120

≥140

≥180

≥190

≥270

≥320

≥340

≥370

After folded

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

TD

Not folded

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

After folded

≥70

≥90

≥100

≥120

≥130

≥150

≥200

≥220

≥250

6

Elongation

MD

Not folded

%

≥15

-

-

After folded

≥10

≥5

≥3

TD

Not folded

≥20

-

-

After folded

≥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 propertyat 155℃+/-2℃, 10min

-

No delamination, no bubble, no adhesive flow.

Note*: Grammage is only for reference. The actual testing value is provided when delivering the goods.

Table 2: Typical performance values for 6630  B-class DMD insulation paper

No.	Properties			Unit	Typical 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	0.005	0.005	0.010	0.010	0.010	0.010	0.010	0.010	0.010
3	Grammage			g/m2	150	190	225	260	290	355	420	510	570
4	Nominal thickness for PET film			um	50	75	100	125	150	190	250	300	350
5	Tensile strength	MD	Not folded	N/10mmwide	90	125	153	170	200	260	310	350	390
			After folded		85	125	152	170	195	260	310	330	365
		TD	Not folded		85	115	162	190	220	282	340	335	360
			After folded		80	115	160	190	220	282	340	295	298
6	Elongation	MD	Not folded	%	16					-		-
			After folded		12					7		4
		TD	Not folded		22					-		-
			After folded		13					6		3
7	Breakdown Voltage			kV	7.5	8.5	10	11	13	17	20	22	24
8	Bonding property at room temp			-	No delamination
9	Bonding propertyat 155℃+/-2℃, 10min			-	No delamination, no bubble, no adhesive flow.

Table 3: Standard performance values for 6630A B-class DMD insulation paper

No.

Properties

Unit

Standard Values

1

Nominal thickness

mm

0.18

0.20

0.23

0.25

0.30

0.35

0.40

0.45

2

Thickness tolerance

mm

+/-0.025

+/-0.030

+/-0.030

+/-0.030

+/-0.030

+/-0.035

+/-0.040

+/-0.045

3

Grammage & Allowed tolerance*

g/m2

170+/-25

200+/-30

220+/-30

250+/-37

300+/-40

340+/-50

400+/-57

470+/-66

4

Nominal thickness for PET film

um

50

75

75

100

125

150

190

250

5

Tensile strength

MD

Not folded

N/10mm

≥100

≥120

≥130

≥150

≥170

≥200

≥300

≥340

After folded

≥90

≥105

≥115

≥130

≥150

≥180

≥220

≥300

TD

Not folded

≥90

≥105

≥115

≥130

≥150

≥180

≥220

≥300

After folded

≥70

≥95

≥100

≥120

≥130

≥160

≥200

≥220

6

Elongation

MD

Not folded

%

≥10

-

-

After folded

≥10

≥5

≥3

TD

Not folded

≥15

-

-

After folded

≥15

≥5

≥2

7

Breakdown Voltage

kV

≥7

≥8

≥8

≥10

≥11

≥11

≥16

≥19

8

Bonding property at room temp

-

No delamination

9

Bonding propertyat 155℃+/-2℃, 10min

-

No delamination, no bubble, no adhesive flow.

Note*: Grammage is only for reference. The actual testing value is provided when delivering the goods.

Table 4: Typical performance values for 6630A B-class DMD insulation paper

No.	Properties			Unit	Typical Values
1	Nominal thickness			mm	0.18	0.20	0.23	0.25	0.30	0.35	0.40	0.45
2	Thickness tolerance			mm	+/-0.025	+/-0.030	+/-0.030	+/-0.030	+/-0.030	+/-0.035	+/-0.040	+/-0.045
3	Grammage			g/m2	170+/-25	200+/-30	220+/-30	250+/-37	300+/-40	340+/-50	400+/-57	470+/-66
4	Niminal thickness for PET film			um	50	75	75	100	125	150	190	250
5	Tensilestrength	MD	Not folded	N/10mm	120	145	155	180	245	283	340	350
			After folded		105	142	154	180	240	282	330	340
		TD	Not folded		100	136	161	193	263	315	350	350
			After folded		95	136	160	191	261	315	350	350
6	Elongation	MD	Not folded	%	16				-		-
			After folded		15				10		9
		TD	Not folded		20				-		-
			After folded		18				10		6
7	Breakdown Voltage			kV	9	10	10	12	13	15	21	22
8	Bonding property at room temp			-	No delamination
9	Bonding propertyat 155℃+/-2℃, 10min			-	No delamination, no bubble, no adhesive flow.

Production Equipment

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