Coated Glass
Characteristics of the product
Coated glass is glass that has been coated with various substances to provide it additional qualities. The coating process is separated into two major categories, which are as follows:
1. Hard-coated Glass :
It is an online coating or pyrolytic CVD process, which means that the coating is generated while float glass is being manufactured. Spraying the coating substance on glass surface while it is heating causes the coating material to be adherent to the glass, allowing it to be tempered. However, colours of hard-coated glass are limited.
2. Soft-coated Glass:
It is an offline coating or magnetron sputtering technique which occurs after float glass manufacturing process, resulting in the coating that is less adherent to glass than hard-coated glass. This type of glass cannot be tempered or heat-strengthened; yet, due to advances in technology, certain soft-coated glass can be tempered and heat-strengthened. This kind of coated glass is available in a range of colours.
Examples of Coated Glass
Coated glass has a wide range of uses. Numerous industrial companies are always developing new coating techniques and coating materials. Following are some examples of coated glass:
1. Reflective Glass
Reflective glass is a thin metallic coating on glass surface that reflects part of the light transmittance and heat radiation. It will partially reduce heat while also reducing light entering the building. The percentage of heat radiation passing through reflective glass, on the other hand, is equivalent to that of normal clear glass. The glass on the building’s brighter side can reflect light like a mirror, while the darker side allows visibility.
Available products: Solar Tag CS120, CS130 (Zelective Grey) CS140, CS148, CS150, CS155, CS214, CS514, Sunguard Solar
How to use:
Reflective glass can be used as a single sheet of glass or further processed in the glass manufacturing process. The coated side of laminated and insulated glass should be on surface 2 to reflect heat rapidly and prevent the coating from scratches.
Application:
- Office buildings or constructions requiring privacy throughout the day
- Areas where direct sunlight should be reduced
2. Low-E Glass
A thin silver metal coating is applied to the glass surface multiple times. This glass can reduce heat radiation to the coated side while still enabling light transmission and solar heat to pass through like normal clear glass does.
Available products : Sunnergy clear, Sunnergy green, Stopray, ClimaGuard
Application:
- Areas where energy conservation is required to reduce the amount of solar radiation entering the building.
How to use:
Because the coating on Low-E glass is easily scratched, it cannot be used as a single pane of glass (Please check with us for specifications of each Low-E glass type). The issue with Low-E glass is that its emissivity is only effective when exposed to air. If the coated side is adhered to a film layer, the emissivity feature of Low-E glass is rendered ineffective, leaving only SHGC. Nonetheless, lower SHGC ratings indicate that the glass allows less solar heat to pass through it, which is essential for determining thermal insulation. Thus, Low-E glass should be manufactured into insulated glass such that the coated side exposes the air in the centre of the insulated glass rather than the outside.
3. Self-cleaning Glass
Self-cleaning glass has a layer that responds to UV radiation. When dust is deposited and subjected to UV rays from the sun, a photocatalytic reaction occurs, causing the dust to degrade and no longer attach to the glass. This glass has hydrophilic qualities as well. When the glass is wet from rain, the water spreads across it, washing away all the usual dust and leaving the glass as clean as new.
How to use:
The installation site must be exposed to sunlight and in an area where rain may completely splash.
Application:
- Roofs
- Difficult to clean areas
4. Anti-reflective Glass
Anti-reflective glass is coated with layers of opposing refractive index coating. As a result, the reflection on glass is reduced.
How to use:
Because anti-reflective glass is readily scratched, caution is required when cleaning it.
Application:
- Picture frames
- Glass display cabinets
- Showrooms where objects must be clearly visible.