Insulation paper Class F DMD 6641

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Basic Info

Place of Origin:	Henan, China (Mainland)

Product Description

6641 F-DMD Flexible Composite Material-insulation paper 6641 F-DMD is a three-layer flexible laminate insulating material consisting of polyester fiber non-woven fabric/polyester film/polyester fiber non-woven fabric. The used adhesive is F Class and acid-free and temperature resistant. 6641 F-DMD shows excellent electric insulating properties, heat resistance,mechanical strength and impregnated properties. It can be used in insulating slots, gaskets for electric machinery and interlayer insulation in transformers.

Technical Specification	Unite	Values
Thickness	mm	0.15	0.18	0.20	0.23	0.25	0.30	0.35	0.40	0.45
Thickness Tolerance	mm	±0.02	±0.025	±0.03	±0.03	±0.03	±0.03	±0.035	±0.040	±0.045
Nominal Grammage and tolerance	g/	140±20	190±28	220±33	260±39	300±45	350±52	425±63	500±75	560±84
Thickness of polyester film	mm	0.05	0.075	0.10	0.125	0.15	0.19	0.25	0.3	0.35
Tensile Strength	MD	No Bending	N/10 mm 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
Elongation	MD	No Bending		≥15
After Bending	≥10	≥5	≥3
TD	No Bending	≥20
After Bending	≥10	≥5	≥2
Breakdown Voltage	KV	≥6	≥7	≥9	≥10	≥12	≥15	≥18	≥20	≥22
Bond strength at 25 degree C		No delamination
Bond strength at 180 degree C		No delamination,no blister,no adhesive flow
Temperature		155

Technical Specification

Unite

Values

Thickness

0.15

0.18

0.20

0.23

0.25

0.30

0.35

0.40

0.45

Thickness Tolerance

±0.02

±0.025

±0.03

±0.035

±0.040

±0.045

Nominal Grammage and tolerance

140±20

190±28

220±33

260±39

300±45

350±52

425±63

500±75

560±84

Thickness of polyester film

0.05

0.075

0.10

0.125

0.15

0.19

0.25

0.3

0.35

Tensile Strength

No Bending

N/10

mm Width

≥80

≥120

≥140

≥180

≥190

≥270

≥320

≥340

≥370

After Bending

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

No Bending

≥80

≥105

≥120

≥150

≥170

≥200

≥300

≥320

≥350

After Bending

≥70

≥90

≥100

≥120

≥130

≥150

≥200

≥220

≥250

Elongation

No Bending

≥15

After Bending

≥10

≥5

≥3

No Bending

≥20

After Bending

≥10

≥5

≥2

Breakdown Voltage

≥6

≥7

≥9

≥10

≥12

≥15

≥18

≥20

≥22

Bond strength at 25 degree C

No delamination

Bond strength at 180 degree C

No delamination,no blister,no adhesive flow

Temperature

155

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dacron/mylar/dacron , insulation paper , flexopap