Lamination Diaphragms

Targray's ToughSIL lamination diaphragms are specially designed for the solar module lamination process.

Our silicone diaphragms are enhanced to achieve higher laminator uptime and decreased running costs.

Starting from base silicone materials, our diaphragm material formulation and its manufacturing process have been optimized to offer a superior product. Our solar module lamination diaphragms are available up to 3,030 mm wide without a splice. This offers module manufacturers with the advantage of not having seam marks visible on their backsheets created during the lamination process.

Do you need a wide silicone laminator diaphragm without a splice?

Targray's seamless lamination membrane enables module makers to produce modules up to 3,030 mm wide with no seam marks visible on the backsheet.

Features and Benefits:

• Seamless surface up to 3,030 mm wide
• Cycle life of over 2500 cycles *
• High temperature resistant
• Excellent elasticity and stability

ToughSIL Classic Silicone Diaphragm

ToughSIL Classic Solar Module Lamination Diaphragm
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Technical Data (Physical Property)
Material	Silicone
Color	Grey
Hardness	58 (Shore A ± 5)
Elongation	over 600%
Tensile Strength	over 100 kgf/cm2
Tear Strength	over 50 kgf/cm
Temperature (Max.)	230°C
Specific Gravity	1.15 g/cm3
Thickness	Standard: 3.0 mm and 3.5 mm
Size (Maximum)	W: 3,030 mm, L: 7,000 mm

Photovoltaic modules need to withstand harsh environmental conditions for long periods – 25 years or more. One of the keys to module longevity and reliability is the lamination process, which encapsulates solar cells while attaching front and back protective sheets.

Lamination Process

The lamination process involves pumping the air out of the module layers in a vacuum chamber, heating the layers to melt the encapsulant, and pressing the layers together with a flexible diaphragm or membrane to embed the cells in encapsulant and adhere the front and back sheets. The flexible diaphragm is attached to the top of the vacuum chamber, and a set of valves allows the space above the diaphragm to be evacuated.

There are 3 main purposes of the diaphragm in the vacuum process:

• To exert a uniform pressure throughout the solar lay-up.
• Removal of moisture, solvents and volatiles from curing composite layers.
• Allow encapsulant material to flow evenly throughout solar cell lay-up.

Contact Targray for more information on our ToughSIL Classic Solar Module Lamination Diaphragms as well as the remainder of our product portfolio and learn how Targray can help optimize your module manufacturing process.

* Cycle life is dependant on set up and operating conditions.