6641 F-class DMD flexible composite insulation paper

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.

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.

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

0.20

0.23

0.25

0.30

0.35

0.40

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

Tensilestrength

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 propertyat room temp

－

No delamination

8

Bonding propertyat 180℃+/-2℃, 10min

－

No delamination,no bubble,no adhesive flow

9

Bonding propertywhen 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	0.20	0.23	0.25	0.30	0.35	0.40
2	Thickness tolerance			mm	0.005	0.005	0.010	0.010	0.010	0.010	0.010	0.010
3	Grammage			g/m2	138	182	207	208	274	326	426	449
4	Tensilestrength	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 propertyat room temp			－	No delamination
8	Bonding propertyat 180℃+/-2℃,  10min			－	No delamination, no bubble, no adhesive flow
9	Bonding propertywhen 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.