6520-50 Polyester Film /Fish Paper
Flexible Laminate
Standard No.: JB 4059-1991
6520-50 polyester film /fish paper flexible laminate is a two-layer flexible laminate in which polyester film is bonded with fish paper. This product has excellent dielectric property and high mechanical property. It is suitable for slot insulation, interphase insulation and liner insulation in electric motor and electric apparatus. It is Class E insulating material.
1 Technical requirements
1.1 Specifications and types are shown in Form 1
Form 1
|
Type |
Nominal thickness of the film µm |
Nominal thickness of the flexible laminate mm |
Remark |
|
6520-50 |
50 |
0.15，0.17，0.20，0.22， 0.25，0.27，0.30，0.35， 0.45，0.60 |
Bonding one-layer polyester film with one-layer calender fish paper |
1.2 General requirements
The general requirements are in accordance with GB 5591.1-1985.
Nominal width: 1000mm Nominal weight: 50kg±5kg
The splices should be no more than 4 in one roll.
1.3 Physical, mechanical and electrical properties are as shown in Form 2
Form 2
|
No. |
Properties |
Units |
Values |
|||||||||||
|
Nominal thickness of the product (mm) |
||||||||||||||
|
0.15 |
0.17 |
0.20 |
0.22 |
0.25 |
0.27 |
0.30 |
0.35 |
0.45 |
0.60 |
|||||
|
1 |
Thickness tolerance |
mm |
±0.020 |
±0.030 |
±0.035 |
±0.045 |
±0.060 |
|||||||
|
2 |
Nominal grammage and tolerance |
g/m2 |
190±28 |
215±32 |
250±38 |
275±40 |
310±46 |
330±50 |
370±55 |
490±73 |
550±32 |
730±110 |
||
|
3 |
Tensile strength |
MD |
No bending |
N/ 10mm |
≥100 |
≥110 |
≥120 |
≥135 |
≥150 |
≥175 |
≥200 |
≥240 |
≥360 |
≥440 |
|
After bending |
≥70 |
≥75 |
≥80 |
≥85 |
≥95 |
≥100 |
≥110 |
≥180 |
≥275 |
≥320 |
||||
|
TD |
No bending |
≥80 |
≥85 |
≥90 |
≥90 |
≥95 |
≥100 |
≥105 |
≥120 |
≥180 |
≥200 |
|||
|
After bending |
≥50 |
≥50 |
≥50 |
≥55 |
≥60 |
≥70 |
≥80 |
≥115 |
≥175 |
≥190 |
||||
|
4 |
Elongation |
MD |
% |
≥2 |
≥3 |
|||||||||
|
TD |
≥8 |
≥10 |
||||||||||||
|
5 |
Breakdown voltage |
No bending |
kV |
≥8.0 |
||||||||||
|
After bending |
≥6.0 |
|||||||||||||
|
6 |
Bonding property at room temp. |
No delamination |
||||||||||||
|
7 |
Bonding property at 155℃±2℃ 10min |
No delamination, no bubble, no adhesive flow |
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2 Testing methods
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 Item 1、3、5、6 of Form 2.
3.2 It can be supplied in roll, piece and tape.
Package: Metal barrels, cartons and/or pallrts
Storage life: 12 month
3.3 The other items are as per GB 5591.1-1985.
4 Remarks
We can also supply the customers a three-layer flexible laminate which is bonded by polyester film/fish paper/ polyester film (M.P.M) or fish paper/ polyester film/ fish paper (P.M.P).