EVERLAM™ PVB interlayer

 

Elastic

At impact, it absorbs the energy from a shock through impressive elongation (up to 250% longer).

Adhesive It holds glass together and ensures that shattered fragments of glass remain bound after impact.
Strong It is extremely difficult to tear.
Durable It retains its properties over a very long period of time.


Key benefits at a glance

EVERLAM™ PVB interlayer benefits from EVERLAM's long experience in producing high-quality material, its recognised technical expertise and support as well as customer service excellence.

Safety

  • Absorbs impact energy
  • Resists penetration
  • Maintains shattered glass fragments together

Security

  • Resists burglar intrusion and violent attacks
  • High performance configurations provide bullet and blast resistance

Sound protection

  • Reduces sound transmission in noisy environments

UV protection

  • Blocks UV transmittance
  • Protects people and objects from potentially damaging rays

EVERLAM™ CLEAR PVB interlayer typical properties

Physical properties

Property

Test method

Units

Test conditions

Typical value

Specific gravity

ASTM D792

 

23°C

1.066

Specific heat (Cp)

ASTM E1269

Joules/kg*K

50°C

1973

Sheet moisture

N-IR

%

 

0.45

Mechanical properties

Property

Test method

Units

Test conditions

Typical value

Tensile strength

EN ISO 527

MPa

23°C / 50% RH

23.0

Elongation at break

EN ISO 527

%

23°C / 50% RH

250

 

Optical properties

Property

Test method

Units

Test conditions

Typical value

Refractive Index

ASTM D542

 

23°C

1.48

Optical Transmission

EN 410

%

 

> 88 (NC010)

 

Yellowness

ASTM 1925

 

Normalized to
10 mm thickness

< 16.0

Haze

ASTM D1003

%

 

< 0.6

UV transmission

ISO 9050

%

Thickness 0.76mm

< 2.0

Thermal properties

Property

Test method

Units

Test conditions

Typical value

Coefficient of Thermal Expansion

TMA

m/m*°C

0-100°C

4.12 x 10-4

Melt Flow Rate

ISO 1133:2005

g/10 min

150°C/ 5.0 kg

1.3

Electrical properties

Property

Test method

Units

Test conditions

Typical value

Surface Resistivity

ASTM D257

Ohms

23°C / 30% RH

2 x 1013

Roll sizes and packaging

PVB thickness

Roll width

Roll length

0.38 mm

Increments
from 23 to 321 cm

400 m

0.76 mm

200 m

1.14 mm

166 m

1.52 mm

125 m

0.38 mm

321 cm

500 or 1,000 m

0.76 mm

250 or 500 m

1.14 mm

335 m

1.52 mm

125 or 250 m

The film is wound on 152 mm inner diameter cores. Rolls are packed and shipped as follows:

  • Roll widths of 140 cm or greater are packed and shipped in single-roll, horizontal crates.
  • Smaller width rolls are normally shipped in 4-roll package, packed vertically on a pallet.

To prevent difficulty of unwinding rolls, EVERLAM™ PVB interlayer is supplied either:

  • Refrigerated, i.e. maintained between 2 and 10 ºC;
  • Interleaved, i.e. separated with a thin PE film, to be stored between 4 and 30 ºC.

The interlayer is protected from moisture changes during shipping and storage by a moisture barrier bag. Once the package has been opened, the roll should be stored in an environment close to 30% relative humidity.