Guardian Glass Polycarbonate

Modern techniques and constant research in the glass production sector have brought safety and security to levels of virtual perfection. GUARDIAN is the latest response to the needs of the world’s unbreakable and bulletproof glass market.

The type of glass selected is fundamental for protection and defeat of criminal actions. Laminated safety glass is assuredly the most immediate solution to the problem, but the limits to every product must be clearly known in advance. So-called armoured glass of even high thickness is capable of providing bulletproof protection, but often proves itself to be vulnerable to the single blow of a club. Other types of glass, defined as being unbreakable or anti-crime, are certainly incapable of resisting prolonged attempts at break-in, especially when in particular surrounding conditions, natural (such as sub-zero temperatures) or otherwise, even thick pvb films stiffen, thus making these articles easy to be destroyed. Sometimes, in order to satisfy special bullet resistance requirements, glass of extreme thickness must be used, with all the serious limitations posed by its weight – in doors for example, with their problems related to movement and wear, or in motor vehicles, where a considerable decrease in load capacity must be accepted.

The splinter effect must also be taken into careful consideration in the choice of a product. In bulletproof and unbreakable glass, this phenomenon is hard to reduce, and represents a serious risk to those in the immediate vicinity of glass itself during attack by clubs or firearms.
In order to improve its range, and in response to the limits described above, HARD GLASS has developed GUARDIAN – a special type of glass that is the result of extensive research and testing conducted in the aerospace industry as well, where the highest strength and reliability specifications are required.

GUARDIAN is a multilayered transparent laminate with extremely high ballistic protection and break-in resistance composed of one or more layers of polycarbonate assembled in a single unit with numerous panels of glass through the use of special urethane films. GUARDIAN can guarantee its extraordinary safety and bulletproof properties even under the worst atmospheric conditions with assured reliability over time,

GUARDIAN is a truly innovative, revolutionary product that makes the security offered by safety glass virtually absolute. Its special property lies in the maximum utilization of the characteristics of the polycarbonate that is inserted between the glass panels.
Polycarbonate is known as a high-performance plastic technopolymer that offers amazing elasticity, resistance to pressure, and is almost completely unbreakable.
The urethane and polycarbonate films inserted do not stiffen at lower temperatures and provide constant performance under conditions where other products fail. For these reasons, GUARDIAN may be considered to be a virtually unbreakable product.

The combination of rigid glass and resilient polycarbonate permits GUARDIAN to offer considerably reduced thickness and weight compared to glass-only solutions at equivalent levels of performance,


GUARDIAN IS LIGHTER: Te specific weight of polycarbonate is nearly half that of glass (1.2 g/cm2 compared to 2.5). For this reason, GUARDIAN can be mounted wherever glass possessing great ballistic resistance and unbreakable strength with lower weight than traditional laminated plate glass is required.
GUARDIAN ELIMINATES THE SPLINTER EFFECT: in its “S” PE version, no splinter effects occur, thanks to the application of the final layer of polycarbonate, thereby obtaining the complete protection of the people in the vicinity of the glass, such as in armoured cars and security personnel stations, etc.
GUARDIAN IMPROVES LUMINOSITY IN TRANSPARENCY: This additional feature is provided thanks to the particular transparency of its plastic components and the decreased thickness of the laminate at equivalent levels of ballistic performance.

GUARDIAN OFFERS A HIGH LEVEL OF SOUND ABSORPTION: This is possible due to the special sound absorption property of polycarbonate (considerably higher than that of glass) and the possibility to combine materials of different type and thickness.