Migo 3.2mm Low Iron Solar Glass is mainly used to generate electricity or heat, it is a specialized glass with higher light and solar transmittance than ordinary soda lime glass (window glass).
Migo Low Iron Solar Glass increases transmittance by changing the chemical composition of the glass, in particular by reducing the iron content of the glass.
Low Iron Solar Glass can be classified into two types according to surface texture: Float Glass and Patterned Glass
Low Iron Float Solar Glass
Float glass has a perfectly smooth and even surface, is used where light needs to be transmitted without changing the angle of the light beam. This is necessary when building concentrating PV modules.
Low Iron Patterned Solar Glass
Patterned glass is used increasingly in PV modules and solar thermal collectors because of its higher transmittance. Migo patterned solar glass is formed with a prismatic pattern on one glass side and a matt pattern on the other side. This ensures the highest energy transmission over the whole solar spectrum.
Solar Glass Production at MIGO GLASS
Low-iron patterned solar glass is produced by embossing a textured surface onto molten float glass using patterned rollers, improving light transmission and reducing reflection for photovoltaic applications.
- Raw Material Preparation
High-purity silica sand, soda ash, limestone, and additives are precisely batched to ensure high transparency and low iron content, enhancing solar efficiency.
- Melting and Refining
Raw materials are melted in a furnace at 1,500–1,600°C. During refining, bubbles and impurities are removed to obtain homogeneous molten glass.
- Float Forming with Patterned Rollers
Molten glass flows onto a molten tin bath, forming a flat ribbon. While still soft, a patterned roller embosses textures (e.g., prismatic, floral, or mist patterns) on one surface to scatter light and improve absorption.
- Annealing (Lehr Process)
The glass ribbon passes through an annealing lehr for slow cooling, relieving internal stresses and improving mechanical strength.
- Cutting and Quality Control
After cooling, the glass is cut to size and undergoes strict inspections, including thickness tolerance, surface quality, pattern uniformity, and optical performance.
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