Filmback MLP

Filmback MLP
Filmback MLP is the most innovative and performing PET based backsheet
available on the market; a monolayer high grade PET film ensures optimal
protection, insulation and robustness of the modules.
Characteristics
Filmcutter Filmback MLP backsheet was specially designed to combine the best properties
and features expected for a backsheet: the superior protection, safety and performance over
the module’s service life, even under challenging conditions. Filmback MLP represents a new
generation of backsheets with an innovative and performing PET monolayer high grade,
UV stable and hydrolysis resistant that is the ultimate solution in terms of durability, performance
and cost reduction.
PET has transformed itself to match the performance requirement of PV Backsheet.
Significant advances in Polyester Chemistry and Polyester Film Production Engineering have
allowed the development of a monolayer 185 micron highly UV and High Resistance durable
polyester film, combining both inner and outer layer properties in a backsheet, used in Filmcutter
Filmback MLP.
At Filmcutter we identified the most important characteristics of the backsheet and also the
weaknesses in order to develop a monolayer high-grade pet backsheet. We retain and improve
the performance, functionality, long-term resistance, but also eliminated the weak link in the current
backsheet configurations, which is the adhesive layer between two films.
Features:
– Monolayer high grade PET film, highly resistant to hydrolysis and UV; avoiding the ahesive
between the two layers of PET film of the classical configuration, Filmback MLP is the most
performant PET based backsheet on the market.
– Cell-side with a special primer for a perfect bonding with the encapsulant and highly reflectant
to increase the cell efficiency.
– Exceeds 3000 hours of DHT and the most severe endurance tests.
– High values of PDT 1100 VDC – certificato TUV - extra insulation and safety for the PV module.
– Filmback PVS is conforming with the standard IEC 61215/61730, TUV, UL e JET.
Filmback MLP is available also in a version with black primer.
Business notes
Structure
The product can be supplied in width from 500 mm to 2000 mm, cut in rolls, sheets or dye-cut
according to customer specs.
Core internal diameter 76 or 152 mm (3 or 6 inches).
BK black Primer color available upon request.
Shelf life: 2 years.
Primer
Monolayer PET 185 micron
Hydrolysis resistant /
UV resistant /
White high reflectance
Filmcutter spa
Via Giulio Natta 10 / 36075 Montecchio Maggiore / Vicenza – Italy
T +39 0444 492375 – F +39 0444 498245 / [email protected]
www.filmcutter.it
Filmback MLP
Technical Data
Properties
UnitMethod
Value
PET air side White, HR and UV resistant
microncaliper
185
Primer White colour
microncaliper
120
Laminate thickness (tolerance +/- 5%)
microncaliper
310
Unit weight (tolerance +/- 5%)g/m2
10x10 weight
385
Tensile strength (MD)
N/10mm
ASTM D-882
200
Tensile strength (TD)
N/10mm
ASTM D-882
190
Elongation at break (MD)
%
ASTM D-882
110
Elongation at break (TD) %
ASTM D-882
100
Heat shrinkage (MD) 150 °C x 30’
%
ASTM D-1204
1,0
Heat shrinkage (TD) 150 °C x 30’
%
ASTM D-1204
0,5
Layer peel strength (PET / Primer)
N/10mm
T-peel (peek value)
>5
EVA adhesion (primer side vs. EVA)
N/10mminternal
>40
Moisture barrier at 38 °C 90% RHg/m2/day
ASTM F-1249
1,7
Breakdown voltage
kV
ASTM D-149
>20
Partial discharge test
VDC
IEC 60664/61730
>1100
Reflectivity (400-550 nm)
%internal
95%
DHT (Damp Heat Test) at 85 °C 85% RH*
hours
IEC 61215
>3000
internal
>80
PCT (Pressure Cooker Test) at 121 °C 100% RH*hours
* Tests realized in laminated modules (glass/Encapsulating EVA/Filmback), DHT (Damp Heat Test at 85°C 85% RH (IEC 61215 procedure 10.13) and PCT (Pressure Cooker Test) at 121°C 100% RH (internal procedure). According
to our film technology 72h of PCT equal to approx. 3000h DHT, correlated to ETB measurement criteria.
All values stated are to be considered as typical values.The above information is liable to change due to innovation and improvement in the manufacturing process.
Note:
Primer colour Bk (black) available.
Cut sheets (sizes, drills etc.) according to customer's specifications.
Shelf life: 2 years.
Certifications
Filmback PVS is certified TUV, UL and JET, according to specific requirements.
UL recognized (UL file n. E348399).
The polyester film used in the manufacturing of Filmback MLP is completely recyclable.
Filmcutter spa
Via Giulio Natta 10 / 36075 Montecchio Maggiore / Vicenza – Italy
T +39 0444 492375 – F +39 0444 498245 / [email protected]
www.filmcutter.it

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