OKATECH Insulating Glass with Metal Insert
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INFOTEXT OKATECH – Insulating Glass with Metal Interlayer OKATECH can integrate many different designs of wire mesh, expanded metal or fabric as a design element with variable functions: • • • • • • • • efficient solar control that can also be directionally selective, depending on the type of inlay used Trough-vision from inside to outside depending on the lighting conditions Privacy screening from outside to inside Good heat insulation Lends the glass façade a visual structure, colour and textured shine Can be easily recycled Visibility for birds Individual design options Physical construction properties Thermal insulation In the standard make-up, the Ug-value is 1.0-1.2-1.5 W/(m²K) (0.18-0.21-0.27 Btu/hr/ft²/°F) depending on gas filling and coating; the mesh improves the U-value only marginal. Lower Ug values are possible by means of an additional cavity between the panes. If this is required, please consult us in advance. Sound insulation The integrated metal interlayers have no significant effect on the sound insulation. The achievable values depend on the glass assembly. Spectral properties OKATECH has directionally-selective properties, depending on the type of insert. The function of OKATECH depends on the current radiation conditions. Partial through-vision is always given, despite the solar control which differs depending on the season and time of day Integrated in a vertical façade, OKATECH functions as follows: 1. direct irradiation from high and medium solar altitude • thermal solar control with total solar energy transmittance values of as low, in particular secondary heat transfer without solar radiation transmission • glare protection 2. direct irradiation from low solar altitude • partial transmission of the direct sunlight • solar yields on south-facing façades

INFOTEXT Technical values of standard types The following information applies to standard make-ups consisting of a external pane with a thickness of 6 mm, a middle pane with a thickness of 6 mm with a coating at #4 and a inner pane with a thickness of 6 mm. Light transmission and total solar energy transmittance depend on the angle of incidence. Figure 1: Angle-selectve light transmission Tv according to DIN EN 410 from OKATECH with solar control coating Figure 2: TSET according to DIN EN 410 from OKATECH with solar control coating Table 1: Technical values for standard make-up with low-e...

INFOTEXT Data for other metal interlayer on request. Legend and related values: unit standard Ug W/(m2K) DIN EN 673 DIN EN 674 TSET % DIN EN 410 Tv % DIN EN 410 FC SC technical term Thermal transmittance Total solar energy transmittance or solar heat gain coefficient Light transmission (direct/hemispheric resp. diffuse/ hemispheric) Reduction factor of a solar control system, FC=TSET/TSETreference Shading coefficient, SC=TSET/0.86 The above data are approximate data. They are based on measurements of approved test institutes and calculations derived from these measurements. Values...

INFOTEXT Lamelle Expanded Metal Copper Project-specific solution Standard make-up External pane made of thermally treated glass Cavity 1: depending on metal inlay Intermediate pane made of thermally treated glass, coating on #4 Cavity 2: up to 12 mm with gas filling Inner pane made of thermally treated glass Dimensions OKATECH Type Lamelle 4000 mm 4000 mm Sambesi 4000 mm 4000 mm Omega 4000 mm 4000 mm Kiwi 3000 mm 4000 mm Mandarin 3000 mm 4000 mm Expanded Metal Alu 1250 mm 4000 mm Expanded Metal Copper 1250 mm 4000 mm Vision AL 260/25 2350 mm 4000 mm Vision AL 260/55 2350 mm 4000 mm Vision...

INFOTEXT ant (spacer bar + secondary seal) plus 12 mm. Otherwise the edge area has to be covered by a screen print. In the case of a polysulphide as secondary seal, it may be necessary to use a exceed cover in order to provide sufficient UV protection. In the case of a frameless glazing system, it is generally recommended that the edge areas are covered using a screen print. Depending on loading, the required sealant width can be considerably greater than that of “conventional” insulating glazing. OKATECH insulating glass uses mesh inserts made of untreated metals, so there can be...