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- Solid clear
tempered safety glass in thickness of 5mm to 6mm - AS-2 designation
as per ANSI Z26.1
- Solid clear
tempered safety glass in thickness of 8mm through to 19mm AS-2
designation with option to add ISO 3254 in accordance with ISO
614 test methods.
Laminated
Glass
Laminated
glass consists of two or more pieces of float glass bonded together
with a clear layer of PVB. The process combines heat and pressure
to bond the layers together into one. This product is favored
for protection in high security areas for its retention in the
frame when broken and for its sound reduction quality when combined
with different thickness of glass. When subjected to stress, laminated
glass ruptures with a pattern similar to annealed glass with large
shards, however the PVB inner layer holds the shards together.
Most marine
applications require the addition of tempered glass to the laminated
composition to meet ISO requirements.
ISO demands
that the outside monolithic glass is to meet load requirements.
See your naval architect for detailed calculations based on the
window location on the vessel and the distance from the water
level.
Common uses
are in conjunction with heating of glass, engine rooms and most
forward facing yacht type windows.
Check with your local surveyor for restrictions [ABS, CCG, etc.]
Tinted
Safety Glass
The tint in
the standard production of float glass adds glare reduction and
a heat reducing feature to the window. The standard tints available
are green/blue, gray and bronze. Light transmission and other
requirements are available upon request.
- Solid tinted tempered safety glass in thickness from 5mm to
12mm - AS-3 designation.
- Float glass is available in certain tints up to 12mm (1/2").
- 15mm (5/8") and 19mm (3/4") only available in clear.
- Most laminated glass such as heated glass and fire-rated glass
is available in a larger selection of tints. This glass type
offers the maximum UV protection.
Hermetically Sealed Units
Any composition
that includes 2 or more pieces of glass, cleaned, drying media
and sealed using a spacebar various thicknesses to separate the
glass.
Sealing of
the glass unit is achieved using poly-ISO Butylin and silicone
secondary seal.
A standard
2 year warranty against seal fracture is offered by the glass
manufacturer.
Fritted
Glass
Fritted glass
is tempered glass with a ceramic based paint permanently bonded
onto the glass during the tempering process. This edge ceramic
'frit' prevents UV rays from penetrating the glass and is commonly
used to prevent degrading the bonding sealant.
Electrically
Heated Glass
Marine
Applications
This glass
is supplied to meet ISO Standards which require solid tempered
safety glass, laminated in multiple layers. The outer layer of
glass represents the monolithic load requirement which is determined
by the naval architect or the shipbuilder.
Heating is
achieved by supplying power to a micro-fine tungsten wire arranged
in the vinyl interlayer in a sinusoidal form (wave). The electrically
charged wire creates a heated surface able to de-mist or de-ice
in the most severe conditions. The glass surface can reach as
high as 130 degrees Fahrenheit.
In moderate
climates 7 to 8 W/Dm2 (75W/sq ft) of heating is common and does
not require a controller. 16 watts per DM2 (150 watts per square
foot) is common on vessels such as ice breakers and coast guard
ships. Anything exceeding 8 watts, requires a thermostatic control.
Electrically
heated glass consists of 2 or more layers of solid tempered safety
glass combined with any of the above glass, sandwiching PVB and
heating element. Heating element can be either resistive wire
or oxide film. Options are available to add ISO 3434 for heated
glass.
· The
glass comes with standard terminal block commonly mounted at the
top center and has spare sensors. Illustrated here, the terminal
block is mounted at the bottom.
Image
by: Dustin Boyce
Note that
all above solid tempered glass is considered under ASTM C1048
for heat-treated glass.
Off Road and Rail Applications
Heated glass
for off road or rail vehicles can be offered in lower voltage
requirements such as 12V DC.
Glass composition
is similar to marine application except chemically toughened glass
is used in some cases.
Connection
can be through surface mounted terminal block or through the edge
of the frame.
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