1、外观
胶带盘面应平整、无气泡、无流胶、胶层均匀。开卷时胶层不转移，边缘整齐无破损。
2、尺寸
2.1 胶带长度
每卷胶带长度为30m～60m或根据用户要求
2.2 胶带宽度
宽度为10mm～50mm，偏差为±0.5mm；宽度大于50mm的胶带，偏差为±1.0mm，也可根据用户的要求供给。
2.3 胶带厚度
胶带的厚度与允许偏差：根据用户的要求可供给各种厚度的胶带，允许偏差±0.008mm。
3、性能要求
|
序号
|
项目名称
|
单位
|
指标
|
|
|
拉伸强度
断裂伸长率
对底材粘着力
对钢板粘着力
工频电器强度
短期极限温度
|
MPa
％
N/10mm
N/10mm
MV/m
℃
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≥70
≥30
≥1.2
≥1.2
≥90
-70——+260
|
251 Polyimide Pressure Sensitive Adhesive Tape with Silicone Resin
This kind of tape is made of polyimide material with heat-resistant silicone adhesive, which shows excellent dielectric insulation properties, high heat resistant, excellent solvent resistant, mask-off gold finger contacts during wave soldering, short-term temp. 250c x 5sec, and is widely used for electrical insulation on motor, transformer, coils, PCB making and so on.
I requirements:
1.1 appearance
The film surface is smooth, bright and clean. It should have no defects such as folding, tearing, particulate, air bubble, pinhole and any external impurity. Its edges shall be orderly and no breakage.
1.2 dimension
The roll length is 30-60 meter or supplied according to the customer’s requirements. The width and allowable deviation: 10mm-50mm: ±0.5mm; >50mm: ±1mm.
1.3 thickness
Thickness and allowable deviation: all of the thickness is available, ±0.008mm.
