Bridgestone EVASAFE™ - High Performance ‘Thermo-set’ Interlayer Film for Laminated Safety Glass -

In this respect, a product with a growing market offered by the Electrical Division of the ‘Diversified Products Group’ is a High Performance EVA (Ethylene Vinyl Acetate) based interlayer film – specially designed for Laminated Safety Glass Applications called EVASAFE™.


Photo: Siauliu Arena, Siauliu (Lithuania), Panevezio Stiklas, Rolandas Solovjovas


EVASAFE™ is the ‘THERMO-SET’ interlayer film in the market with the highest degree of 3-DIMENSIONALLY CROSS-Linking during the lamination cycle.

EVASAFE™ can be processed in both ways – WITH AUTOCLAVE and AUTOCLAVE-FREE - in laminating ovens/kilns with vacuum system.
 
Thanks to EVASAFE™, specialized glass processors are finally in the position to produce a wide variety of highly quality consistent products.

These products range from the Laminated Safety Glass with unique performance, to value adding products with various types of inserts.

Photo: Coffee Shop in Amman, Mansour

EVASAFE™’s excellent stability in mechanical, thermal and optical properties is due to its densely cross-linked structure. The cross-linking capability of EVASAFE™ originates from the unique production process.

With the know-how of MORE THAN 25 YEARS OF EXPERIENCE in the field of EVA films, Bridgestone can offer interlayer products satisfying the highest market requirements – in the areas of safety and security, design and multifunctional glazing – backed by an integral technical support.

Photo: Church entrance, Stone: Kaschmir Gold, Pöllauberg (Austria), Grein/Sametec


EVASAFE™ should not be mixed up with other EVA-based interlayers in the market. These generic EVA products are mainly thermoplastic materials and cannot be used in Laminated Safety Glass applications.

The ‘thermo-set’ interlayer EVASAFE™ offers great number of advantages and unique features compared to other market known thermoplastic/generic interlayer materials.
 
The first and most important point is SAFETY.
Bridgestone EVASAFE™ offers higher mechanical and structural strength over WIDE TEMPERATURE RANGE compared to main interlayers found in the market.

The shear modulus test result, mechanical durability results and the German Approval (DIBt) illustrate the high performance profiles in this respect.

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EVASAFE™ is very easy to use, to store and to handle.
 
EVASAFE™ offers SUPERIOR ADHESION and this not only to glass, but also to various insert media.

EVASAFE™’s LOW MELT VISCOSITY supports various kinds of insert applications of a value-adding and multi-functional nature.

The low melt viscosity enables good compatibility with tempered glass, kinds of applications as well as inserts with uneven/rough surfaces, e. g. some wood veneer, paper, stones etc.



Chart: Viscosity of EVASAFE™ vs. common interlayers

Optical properties, like Transparency, low Haze, low Yellow Index and a good UV cut-off are key properties for a good quality, stability and durability of the end product.

The product YOU create with Bridgestone EVASAFE™ offers EXCELLENT OPTICAL PROPERTIES, at the INITIAL STAGE and over a LONG PERIOD OF TIME, which we prove through very intensive in-house and independent testing.

Chart: Total Transparency after intensive UV-aging (200h – 100% UV – 1000W/m²)

 
Chart: Yellow Index after intensive UV-aging (200h – 100% UV – 1000W/m²) 

Chart: Haze Value after intensive UV-aging (200h – 100% UV – 1000W/m²)

EVASAFE™ provides for VERY HIGH MOISTURE RESISTANCE. It can be used in OPEN EDGE FAÇADES or other OUTDOOR applications like bus stops/balustrades and others – with or without insert or inlay.

EVASAFE™ offers excellent protection against UV aging.

EVASAFE™ does NOT contain hazardous PLASTICIZERS and offers compatibility with a wide range of sealants.
 
EVASAFE™ can be configured in special applications ensuring VERY GOOD SOUND INSULATION properties.
 
With regard to all these unique properties EVASAFE™ is an exceptional product for internal and especially external usage - even under open edge conditions.

 
EVASAFE™ is a synonym for long life durability. NO OTHER interlayer realizes such long term durability and stability.
 
EVASAFE™ shows already an eight to ten times higher shear modulus at room temperature compared to commonly found interlayers in the market.

At higher temperatures, e.g. 50°C, this difference increases to a 100 times higher value for EVASAFE™ for loads acting for more than 10…20minutes.

Chart: Shear Modulus comparison EVASAFE™ vs. common interlayers at various temperatures