BOPET polyester film 4.2-4.5microns BOPET Film for Thermal Transfer Ribbons type TTR 1、 Characteristics It is stretched in biaxial orientation by mean of flat film method by using imported polyethylene terephthalate in electrical grade. With good mechanical properties, and thermal characteristics, it has excellent engineering properties in coating process. 2、 Applications As a kind of substrate, it is widely applied to a variety of bar code printing, advertising banner printing, label printing, photo printing and other industries. BOPET TTR film (polyester film for transfer print) were basic film for BOPET Thermal Transfer color Ribbons film,HOT STAMPING FILM, Polyester film, BOPET TTR SERIES, BOPET film, PET film, thermal transfer film,pet thermal transfer film,TTR pet,TTR bopet film,Thermal Transfer Ribbons,carbon ribbon,carbon tape,carbon fiber tape 3、 Specifications Size(μm) WMV(μm) MMV(μm) Test method 4.0 4.0±0.1 4.2±4% GB/T 13542.2-2009/4 4.3 4.3±0.1 4.5±4% 4.5 4.5±0.1 47±4% Width of the finished film roll mm 700±2, 910±2,1010±2 oras customer’s requirement 700±2,910±2,1010±2 Inner diameter （D0） mm Φ152.4 picture Outer diameter （D） mm 350-550 Note:For special specifications, please discuss with us separately. 4、Thickness Representation The nominal value of the film thickness is indicated by the central value (integer value, such as 3,5,7,10,15) of film thickness plus mantissa (one point after decimal point) or its code. Our nominal value for BOPET film thickness is represented in WMV.