Sell Polyimide Film & Tape Polyester Film

The products are high quality but cheap. Specifications of polyimide film, polyimide adhesive tapes, and polyester film are listed as below :
Polyimide film
Our polyimide film is widely used for electrical and electronic appliances with properties of heat resistant (-60c_250c ), chemical resistant ( almost no organic or inorganic solvents except caustic alkali ), dielectric, flame retardant, physical, mechanical and compounded with many materials performances.
Size :
Thichness0.025-0.125mm, width16-1040mm
Characteristics :
1 )physical and chemical performance :
A. Thickness tolerance : Less than 10%,
B. Density : 1.40-1.44g / cm3,
C. Tensile strength : Lengthwise more than135mpa, crosswise more than 115mpa
D. Elongation ( lengthwise / crosswise ): More than 40%
2 ) dielectric performance :
A. Dielectric strength : More than 150kv/mm,
B. Dielectric coefficient : Less than 4,
C. Tangent of dielectric loss angle : Less than 0.004,
D. Volume resistance : More than ten billion (at 200centigrade ), surface resistance : More than ten trillion (at 200centigrade ).
3 ) heat resistance performance :
A. Melt point : Without,
B. Heat shrinkage (at 200centigrade ): Less than 0.4%,
C. Flammability : Difficult to burn, self quenching.
D. Thermal resolution temperature : More than 470centigrade.
Polyimide adhesive tapes
1 )size
Thickness1mil-10mil, width10-500mm, length33m
2 )physical and mechanical performance
A. Adhensive strength (n/25mm ):6.2
B. Elongation : 55%
C. Tensile strength : 115mpa
3 )dielectric performance
A. Insulation grade : H (at 200 centigrade )
B. Tolerance voltage ( kv ): 7(at 200 centigrade )
C. Insulation resistance ( ohm ): 1000000(at 200 centigrade )
6020/6021 polyester film
6020/6021 is biaxial oriented polyethelene terephthalate ( pet ) film. This product has good dielectric and high mechanical properties.
1 technical requirements
1.1 appearance
The film is supplied in roll form. Its surface should be flat and smooth. The film should be free of defects such as wrinkles, avulsions, grains, bubbles, holes, and contaminations. Edges of rolls should show clean cuts.
1.2 thickness and tolerance