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info@mtc.de

Die-casted acrylic window

For an optimum combination of high transmission and best properties, MTC offers shielded windows, which are usually used for visual display instruments or electronic housings.

Depending on the application, you can choose between different designs and materials to achieve the best values for e.g. transmission, electrical conductivity, breakage resistance or scratch resistance.

  • High break resistance
  • Good shielding effectiveness
  • Two types of construction available (butt edge construction or step edge construction)

More details about shielded windows

Contrary to the manufacturing process of fully laminated substrates in this version the mesh is mounted in a mould. The mould will then be filled with liquid plastic.

The phenomenon of the so-called moire applies here as well. It can be solved by mounting the mesh not in an angle of 90° but i.e. in an angle of 15°; 30° or 45°.

The electrically conductive mesh does not stand over the edge at this product. The single wires on the edge of the window serve as contact points.

To get a contact from the edge to the surface of the window, silver busbar is applied. The contact to the cabinet or the display frame is implemented by a conductive gasket.

  • Maximum size of the sheet: 1200 x 700 mm
  • Range of temperature for cast glass: - 40°C to + 70 ° C
  • Standard material thickness: 1,5 – 2,0 – 2,5 – 3,0 and 4,0 mm
  • Tolerance of material thickness: ± 0,2 mm

We differentiate two types of construction:

In this case a window with given outside dimension will be cutted out and silver busbar will be applied from the edge to one side of the window (on request silver busbar can be applied to both sides of the window).

In this case the first step is to cut out the outside dimension of the window. Then the step will be machined and a silver busbar will be applied from the edge to the surface of the step.

Two types of meshes are available:

  • Plain stainless steel 
    wire Ø: 0,025 mm
    100 opi (openings per inch)        
                       
  •  Blackened stainless steel
    wire Ø: 0,025 mm
    100 opi (openings per inch)
  • Multi-layer coating according to MIL SPEC 675 B (less than 0,6% rest of reflection)
  • Anti scratch-, anti-reflection coating
  • Diffusion influenceable by thickness of the coating

Reflexion

Description Reflexion in %
A1 64 - 65 %
A2 61 - 62 %
A3 58 - 59 %
A4 55 - 56 %
A5 49 - 50 %