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SGG MIRASTAR Technology

Surface Mirror with chrome coating

1. Technical Data

 
Reflection coated side 58 %*
Reflection glass side 42 %*
Transmission 4 %**
Emissivity ≤ 31 %

* The physical data given is based on calculated or measured values which may deviate by up to ± 3 %-Points as a result of tolerances in glass thickness and processing. Technical values are determined in accordance with current standards and guidelines and relate only to the describen compositions.
** ± 1 %

The following tests have been carried out successfully:

  • Condensation test to DIN 50017
  • CASS- and Salt spray test to ISO 9227 (TZO Leipzig)
  • Cyclic testing and free weathering over 3 Years
  • SO2-Test to DIN EN ISO 6988 (TZO Leipzig), NH3-, and NaOH-Test to DIN EN 1096
  • Taber-Test
  • Erichsen-Test (> 1000 Cycles)
   

2. Standard product

SECURIT MIRASTAR [>]

Thickness

4/6/8/10 mm

Dimensions

Up to max: 2000 x 4000 mm
Minimum: 100 x 300 mm
max. aspect ratio 1:20

Please note that when considering the use of maximum size of a particular thickness, it is possible that the planimetry tolerances (absolute deviance from plane) will be an important factor. The high reflection of MIRASTAR may cause distinct distortions. We recommend, particularly with square aspect ratios (1:1,15), to use the next thicker glass.

 
 

3. Special product

MIRASTAR DESIGN

Employing a special technique developed by ECKELT, all areas which are not to be coated are covered.

This covering ensures that following the Chrome mirroring process, only the free areas remain coated.

The coating appears mirror-like and with a light transmission of approx. 4 % and in sufficient light-darkness difference is also transparent.

MIRASTAR DESIGN can be normally manufactured as SECURIT, STADIP or in insulated glass combinations.

Because of the complexity of process techniques it is not possible to give general information as far as glass thickness and designs are concerned. We request that you provide us with you project-specific requirements.

 
 

4. Application technical notes

SECURIT MIRASTAR

We recommend to place the MIRASTAR coating always away from the weathered side.

The thermal tempering requires that subsequent treatments to the glass such as cutting, grinding, drilling etc. are not carried out. This can result in breakage or at least in a reduction of the material characteristics of the glass!

All finishes to the glass must therefore be carried out prior to tempering.

Notes for use as a one-way mirror:

To be used as a one-way mirror it is necessary to achieve suitable lighting conditions. We recommend a light-ratio of 1:8 between the observer room and the observed room. It is necessary to know that even the non-mirrored side of the glass has about 42% reflection and can cause unwanted reflections and glare when the lighting levels are too high or lights are poorly positioned. In observer rooms where monitors are used it is also necessary to comply with prevalent workplace regulations.

Moisture uniformity on the glass surface

The surface moisture uniformity on the outside of the glass may vary e.g. due to imprints from rollers, fingers, labels, paper residue, suction pads, sealant residue, smoothing agents, separation agents or environmental influences. Moisture on the glass surface as a result of condensation, rain or cleaning water may have differing levels of uniformity. Such appearances are inherent characteristics and cannot be considered as defects.

[PDF] Tolerances
[PDF] General Glazing Guidelines
[PDF] Cleaning- and Maintenance recommendations

 
 

5. Finishing

5.1 Edge working

Standard edges for SECURIT MIRASTAR are arrissed edges.

When edges are ordered fine ground (KGN) or polished (KPO) they will have the corners swiped matt as standard.

5.2 Drilled holes

Up to 10 mm Glass thickness

The hole diameter (D) must not be less than the glass thickness (S).

Should more than 4 holes be adjacent to each other then the distances will increase.

 
Arrissed edge (KGS)
 
 

6. Marking

MIRASTAR FT is marked acc. EN 12150.

MARKING REQUIREMENTS OUTSIDE OF STANDARDS MUST BE ADVISED PRIOR TO ORDERING.