Polyester Film for PV Backsheet
|FOB Price:||US $3,000 / Ton|
|Min. Order:||10 Tons|
|Min. Order||FOB Price|
|10 Tons||US $3,000/ Ton|
|Payment Terms:||T/T, D/P, Western Union|
- Model NO.: D269, DS10, DS11, DS269UV, DX10A, DS10C
- Type: Solid
- Material: Plastic
- Maximum Voltage: 10KV~20KV
- Certification: UL, ISO9001, ISO14001,Ohsas18001,ISO10012,Cnas
- Brand: Dongfang
- Trademark: Dongfang
- Origin: Sichuan, China
- Application: PV Backsheet Base
- Chemistry: Organic Insulation
- Thermal Rating: B 130
- Classification: Organic Insulating Material
- Color: White
- Colors: Transparent
- Specification: 0.05-0.35mm
- HS Code: 39206200
Dongfang can make the milky, transparent, black PET film for PV backsheet according to customers' different requirement.
Low shrinkage, high PCT life, flame retardant, low vapor transmission.
This film is biaxial oriented polyethylene terephthalate (PET) film through melting, casting sheet, stretching and fixed form. Since modified polyethylene terephthalate and special additive be adopted, this film has excellent physical and mechanical properties, thermal resistance, dimensional stability, dielectric properties, flame resistance, low vapor transmission and good machining properties. It is used for producing backsheets of solar batteries.
DS10 ---- Milky white
DS11 ---- Opaque white
DS10C ---- Transparent
1 Technical requirements
1.1 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.
1.2 Recommended nominal thickness as following:
0.125mm, 0.15mm, 0.188mm, 0.25mm. Other requirements for thickness can be settled upon negotiation between sellers and buyers.
For 0.125mm ~0.25mm Tolerance: +/-4%
2 Testing methods
2.1 Appearance: Judge by visual observation and handle.
2.2 Thickness: As per Clauses 4.1.1 of Standard GB/T 13541-1992.
2.3 Tensile Strength and Elongation at Break
As per Chapter 11 of Standard GB/T 13541-1992.
2.4 Thermal Shrinkage
As per Chapter 22 of Standard GB/T 13541-1992.
Testing condition: Under temperature 150ºC+/-2ºC for 30min.
2.5 Surface Gloss Degree: As per ASTM D2457, testing angle is 60o.
2.6 Whiteness (Wh) and opaque degree: Test by Whiteness Testing Instrument.
2.7 Surface Wetting Tension
As per the relevant provisions in Standard GB/T 13541-1992.
2.8 Power Frequency Dielectric Strength
As per Standard GB12802.2-2004 or ASTMD149-1997.
2.9 Vapor Transmissivity
As per Standard GB/T1037-1988 or ASTMF1249-2006.
2.10 Flammability: As per Standard ANST/UL94-1985.
2.11 Ligth Transmissivity and Haze: As per Standard GB/T2410-2008
Type Approval Test should include Clause 1.1, 1.2 and 1.3, and Routine Test as per Technical Contract signed by buyer and seller.
4 Marks, packing, transportation and storage
As per the stipulations of Chapter 7 in Standard GB/T 13541-1992.
The storage life is 3 months. After 3 months, this product also can be used if its Surface Wetting Tension value still qualified or after being re-treated with corona.