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A型：全菱形安全膜 Diamond Pattern
![]4SVDX[}[[6{2H$K1)CWM8R](http://5mrorwxhipjpiij.leadongcdn.com/cloud/irBqpKjnRinSpjinimkq/4SVDXH-K1-.png)
B型：全T形安全膜 T- Pattern
![%51@1$D5SHTT9]{AK6K9`EH](http://5prorwxhipjprij.leadongcdn.com/cloud/iiBqpKjnRinSpjinjmkq/51-D5SHTT9.png)
C型：半T形安全膜 1/2 T- Pattern
常用产品规格（宽度和留边量）Normal film Width and Margin
![)61@69U$3``_$B]4NHVSPJX](http://5prorwxhipjprij.leadongcdn.com/cloud/irBqpKjnRinSpjjnpikq/61U-_-BNHV.png)
n 金属化膜技术参数Specifications of metallized film：
金属化聚丙烯薄膜(MPP Film)：
Properties | 单位 Unit | 典型值 Typical value |
密度Density | g/cm3 | 0.905±0.005 |
厚度 Thickness | µm | 2.2 ～ 15 |
抗拉强度Tensile Strength | 纵向MD (MPa) | ≥100 |
断裂伸长率Elongation at Break | 纵向MD (%) | 20～200 |
弹性模量Elastic Modulus | 纵向MD (MPa) | 2800 |
热收缩率Heat Shrinkage | 纵向MD (%) | ≤5 ( 120°C, 10min) |
湿润张力Wetting Tension | mN/m | 38 (电晕处理面Corona treated side) |
表面粗糙度Surface Roughness | µm | 0.08 |
熔点Melting Point | ℃ | 172 |
体积电阻率Volume Resistivity | Ω.m | ＞1015 |
介电强度Break-dowm Voltage | V/µm | ≥350 ( 23°C, DC ) |
相对介电常数Dielectric Constant | 2.2 (20℃，1KHz) | |
介电损耗因数Dissipation Factor | ≤4×10-4 (20℃，1KHz ) | |
RC值 | ΩF | ≥5×104 |
金属化聚酯薄膜(MPET Film)：
性能 Properties | 单位 Unit | 典型值 Typical value | ||
密度Density | g/cm3 | 1.4 | ||
厚度 Thickness | µm | ＜5 | 5～12 | ≥12 |
抗拉强度Tensile Strength | 纵向MD (MPa) | ≥84 | ≥108 | ≥120 |
断裂伸长率Elongation at Break | 纵向MD (%) | ≥22 | ≥33 | ≥44 |
弹性模量Elastic Modulus | 纵向MD (MPa) | 3500 | ||
介电强度Break-dowm Voltage | V/µm | ≥200 ( 23°C, DC ) | ≥250 ( 23°C, DC ) | |
热收缩率Heat Shrinkage | 纵向MD (%) | ≤2.5 ( 150°C, 10min) | ||
表面粗糙度Surface Roughness | µm | 0.095 | ||
熔点Melting Point | ℃ | 256 | ||
体积电阻率Volume Resistivity | Ω.m | ＞1015 ( 23°C, 相对湿度Humidity 50%) | ||
相对介电常数Dielectric Constant | 3.2 (20℃，1KHz) | |||
介电损耗因数Dissipation Factor | - | ≤60×10-4 (20℃，1KHz ) | ||
RC值 | ΩF | ≥1×104 | ||
Ø Film rolls are packed and heat-sealed in vacuum plastic bags with desiccants inside.
Ø The Bags are marked with type labels, mark thickness width, free margin width and resistance.
Ø The bags are packed in carton cases.
The cartons are wrapped by wooden cases or reinforced carton.
Ø Metallized film should be stored in its original package with temperature 5 - 35℃ and humidity less than 85%RH before using.
Ø Metallized layer is easily oxidized when exposure to moisture. Therefore, the film should be used as soon as possible when opened.
Ø The recommended temperature is 15 -25℃ with humidity less than 60%RH after opening
Ø With original sealed package, and stored as mentioned above, the storage time can be as following:
Al metallized film: 12 months from the delivery date. Al/Zn Alloy metallized film: As zinc is quite unstable , the storage period (from delivery date) depends on the resistance of the film:
≤10 Ω/□: 6 months
10 ～30Ω/□: 3 months
＞30Ω/□: 1month
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