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Les produits verriers

SAPPHIRE GLASS

Sapphire or crystalline corundum is artificially manufactured, unlike its precious gemstone namesake.

Sapphire is generally produced by crystallising aluminium oxide powder (Al2O3) at a very high temperature and pressure.

However, there are various sapphire crystal development processes, and the most widely used are ISM (polycrystalline), KY, HEM, EFG and CZ (monocrystalline).

Advantages :

Very good transmission in the UV range – close to IR.

Incredibly resistant compared to other optical glasses (thermal, chemical, mechanical shocks).

Very resistant to scratches and abrasion (9 on the Mohs hardness scale, just below diamond).

Very high melting temperature.

Applications :

Photoelectric sensor.

Watchmaking: watch glass (can only be scratched by diamond).

Scanner glass: often subject to scratches.

Telephone screens: used for digital fingerprint readers, smartphones, cameras and some watches.

Windows that must resist extreme temperatures or pressure: laser applications.

Disadvantages :
Its extreme hardness makes it a difficult material to machine, which therefore limits the complexity of shapes possible.

Download technical document : FICHE_VERRE_SAPHIR.pdf

CURVED GLASS

Curved glass are pieces of glass that were bent using a heating process or cold working. There are several manufacturing methods for creating curved glass: There are several manufacturing methods for creating curved glass:

Fusing or thermoforming: using glass that will be heated progressively in a kiln. Once the softening temperature is reached, the glass fits over or into the shape of a convex or concave mould by the force of gravity. Cutting of tubes or spheres: depending on the dimensions requested by the customer, we can cut sections of tube ranging from 9 mm to 465 mm in diameter and spheres from 85 mm to 420 mm in diameter. Moulding (or press moulding): process used for more complex shapes that cannot be obtained through thermorforming, or for very thick parts. Machining.

Applications :

Cameras, lenses. Protective screens (dome for cameras, store windows, light fixtures, etc.). Watchmaking. Aquariums.

Advantages of curved glass: Depending on the application(s), dimensions and finishes, there are several manufacturing possibilities. Disadvantages of curved glass: The tools required for manufacturing (templates, moulds, etc.). Types of glass that can be curved: Borosilicate glass, soda-lime glass, quartz, optical glass. Download technical document : FICHE_VERRE_BOMBÉ.pdf

LAMINATED GLASS

Laminated glass is made of 2 or more single glass sheets (annealed or tempered).

These sheets are glued together using one or more PVB films (polyvinyl butyral).

In the event of impact, laminated glass provides a protective barrier.


Applications :

Floor panels, stairs, guardrails
Automotive
Protection of buildings: anti-intrusion, bulletproof, explosion proof
Doors to industrial machines
Protection of display and advertising screens
Protection of artwork
Fire resistant or flame resistant panels

Advantages of laminated glass:

If broken, it absorbs a certain amount of the impact energy. The PVB film prevents shards from coming loose, therefore ensuring residual protection before the damaged piece can be replaced.

It also improves acoustics by attenuating certain frequencies. It can be transparent, coloured or ground.

It provides a very good level of protection against UV rays.

Disadvantages of laminated glass:

Difficult to cut and drill

We provide tempered glass in the form of:

Discs and sheets.

Download technical document : FICHE_VERRE_FEUILLETÉ.pdf

TEMPERED GLASS

Tempered (or securit) glass is glass that has undergone quick, homogeneous cooling after being heated to its softening point (between 500° and 700° depending on the type of glass). Tempered glass provides increased resistance to mechanical impact, as well as good bending strength and resistance to thermal shock. If subjected to excessive stress, the glass breaks into small pieces, which reduces the risk of injury or cuts. Applications :

Windows for rolling stock Protective glass for industrial machines, anti-intrusion, building façades, furniture Lights, explosion-proof boxes, portholes Laminated glass that has also undergone tempering can be used for applications that require compliance with specific safety standards

Advantages of tempered glass:

Relatively low cost, easy to use, possibilities for sandblasting and screenprinting.

Disadvantages of tempered glass: Once tempered, it is no longer possible to work the glass (no drilling or cutting). Technical data: On average, the theoretical values for mechanical properties of tempered glass are 3 to 5 times higher than those of glass that has not been tempered. We provide tempered glass in the form of:

Sheets, discs, curved glass (before tempering), laminated or multilayer laminated, double glazing.

Download technical document : FICHE_VERRE_TREMPÉ.pdf