Sichuan Dongfang Insulating Material Co., Ltd., make common and flame retardant (VTM_0, VTM-2) black polyester film. D250, D253 and DFD250B are biaxial oriented black polyethylene terephthalate (PET) film through melting, casting and stretching.
Type D250 ------ Appearance is glossy.
Type D253 ------ Appearance is matte.
Type DFD250---Flame retardant, VTM-2 and VTM-0 are available
-Musical instrument1. Appearance:
The film is supplied in rolls. Its surface should be flat and smooth, and should be free of defects such as wrinkles, avulsions, particulate matter, blisters, pinholes and contaminations. Edges of rolls should be tidy and clean.2. Dimension
2.1 Thickness and Tolerance: Recommended nominal thickness as following:
50um,75um, 100um, 125um, 188um, 250um.
50um~100um Tolerance +/-5%
>100um~250um Tolerance +/-4%
Special requirements for thickness could be settled upon negotiation.
2.2 Numbers of splice and minimum length: No splice in a roll.
2.3 Physical properties: Physical properties are as shown in blow table:
|Dielectric Dissipation Factor||V/um||190||165||145||140||120||95||GB/T 13542.2-2009|
|Thermal Resistance|| ||E||_|
|Storage Life||The Storage Life is 18 months at lower than 40 degree after leaving factory. The product should be stored in warehouse which is dry and clean as well as keep away from fire, heat and directly sunshine.|
|Character and Applications||This film has excellent coverage of black,the colour is even and persistent,good electrical insulating properties.D250's appearance is shining, D253's appearance is matte.It has gained SGS certificate in accordance with the RoHS Directives.It is used for adhesive tapes, electrical insulation, loudspeakers, musical drums, etc.|
|Remarks||Avoid crackles, scratches, contamination of dust and oil while being slit and/or used.|