 Flat Glass |
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MONOLITHIC GLASS |
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FLOAT GLASS |
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FIGURED GLASS |
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WIRED GLASS (POLISHED
/ FIGURED) |
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BRONZERAL/ GRAYRAL/ GREENRAL |
MIRROR |
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MIE MIRROR |
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MIE MIRROR DELUXE |
FIRE RESISTANT GLASS |
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HEAT RESISTANT TEMPERED GLASS (FIRELEX) |
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HEAT INSULATING GLASS (FUEGOLEX) |
FUNCTIONAL GLASS |
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HEAT REFLECTIVE GLASS (SKYLEX) |
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HIGH-PERFORMANCE HEAT REFLECTIVE GLASS (SKYCOOL) |
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INSULATING GLASS UNIT (PAIRLEX) |
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LAMINATED GLASS (LAMILEX UV) |
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TEMPERED GLASS (TEMPALEX) |
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HEAT STRENGTHENED
GLASS (HS-LEX) |
| Insulating Glass Unit |
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| Hermetically sealed glass unit with an extra-low
heat-transfer coefficient |
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 JR Station in Hiroshima |
| PAIRLEX is an insulating glass manufactured from two or more (normally two) sheets of glass that are separated by a hermetically sealed dry air space. | | |
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Energy conservation |
| The hermetically sealed dry air space between the sheets of glass lowers the air-to-air heat transfer ratio, reducing the overall heat transmission coefficient to approximately half that of monolithic glass. | |
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Prevention of dew condensation |
| Because of the effect of the air space, the interior surface of PAIRLEX rarely cools to dew point. | |
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Office buildings, hotels, hospitals, laboratories and houses |
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Locations where operation of air-conditioning units is an ongoing requirement; such as plants, computer rooms and aircraft control towers |
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Refrigerated showcases |
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Follow standard glazing procedures for PAIRLEX. |
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PAIRLEX is sealed with an organic material whose service life is limited. The product offers superior performance features, but it is still susceptible to damage. The method of installation is a major factor in the length of service life. Follow standard glazing procedures. |
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The sealing compound will deteriorate under conditions of prolonged exposure to high temperatures, above 60 °C |
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The sealing compound will deteriorate if butt joints are exposed to the weather. |
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For use in locations above 1,000 meters in elevation, the pressure of the sealed air space must be adjusted before installation. |
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In normal use, the internal air pressure of PAIRLEX varies due to changes in temperature, possibly distorting the reflected image. |
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Support the two-sheet unit securely to prevent uneven shearing forces. |
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When combined with wired glass, the edges of glass units should be protected with rust-preventive treatments. |
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PAIRLEX cannot be cut after manufacture. Specify accurate size and shape when ordering. |
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Consult Central Glass or an authorized representative concerning custom combinations of different glass sheets. |
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To maximize insulating performance, select sashes of superior quality having rabbets of sufficient width and depth. |
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Sealed parts will deteriorate if they are in prolonged contact with water or if condensation foams in the air space. Three water drain holes (5 mm in diameter) must be provided at the sash bottom for draining rainwater or condensation quickly. |
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Insulating glass is two or more times as heavy as monolithic glass. Ensure that the sectional area can support the weight of the unit. |
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If the surface of the rabbets is irregular or the insulating glass unit is supported unevenly, moisture can condense in the air space. |
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Calculate thermal values when heat absorbing glass, heat reflective glass or high performance heat reflective glass is used, as a precaution against thermal cracking. |
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To ensure proper drainage, clean all sides of the sash and rabbets before mounting insulating glass units. |
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Sealing compounds for sealing insulating glass should be elastic silicone or polysulfide. |
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Store insulating glass units in a dry and well-ventilated place. The glass should not be exposed to direct sunlight. |
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Covering insulating glass units with paper or films will result in thermal cracking. |
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The glass surface should not be exposed to direct currents of air from air-conditioning units. |
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To prolong the life of insulating glass units, remove deteriorated sealants and apply new sealing compounds when necessary. |
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Efficiently insulated and weather-tight sashes should be provided to maximize the efficiency of insulating glass units. |
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When movable sashes are glazed, insulating glass units should be protected from impact, vibration or distortion caused during opening and closing of the sashes. |
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Use a superior elastic sealing compound (polysulfide or silicone). |
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Use polyethylene foam or chloroprene rubber (90° hardness) as a backup material. |
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