L-matrix GDS | Gas Dynamic Spray

The L-matrix GDS flatbed machine applies a conductive metal powder to the glass surface by means of a high-speed gas jet in a cold process. The powder particles permanently bond to each other and to the conductive glass coating with minimal contact resistance. In this way, a resilient electrical conductor - a so-called busbar - is applied to the glass and thus enables very good conduction and dissipation of high electrical currents.

These busbars can be applied in any desired and optimised layouts to enable the desired heat distribution in the glass. The busbars applied to the glass comply with European standards and have been a product successfully used on the market for years.

Spraying system

The L-matrix GDS applies conductive busbars at a speed of 40 mm/s. This allows the machine to be used in conjunction with the L-matrix LDC without reducing the overall output of heated glass production. The time needed to apply the busbars is usually shorter than the time needed to laser process the corresponding glass panel.

The warranty period of the L-matrix GDS is normally two years (depending on the terms of the contract. Particles of metal powder of a certain size are accelerated to high speeds in a special way. The stream of these particles is then directed at the glass surface at the desired angle, causing these particles to adhere to the glass in the form of a metallic band.

A small percentage of the particles cannot adhere to the glass for various reasons, but are immediately removed by the suction system directly in the spray zone and do not get into the environment.

The L-matrix GDS meets the requirements for air and noise pollution. The operator usually does not need any special protective equipment. The L-matrix GDS can be placed in a typical glass processing plant.

Machine details

A unique and patented spraying system for applying the busbar to the glass. It enables the metal busbars to be applied to the glass at a high speed and with great precision. These busbars do not require any additional processing after application - the wires can be soldered to the busbar immediately.

3 motors move the laser in the X, Y and Z coordinates. The motors provide the machining accuracy of 300 microns (0.3 mm) and it is this value that determines the accuracy of the overall system. Should a glass pane of 6 m length be processed (the so-called "jumbo" size), the maximum possible error in positioning will not exceed 300 microns.

The work surface guarantees that the glass is not damaged and is resistant to laser radiation for a long time if the service and maintenance plan is followed. The work surface is equipped with an air cushion that serves as both a transport clamp and a suction clamp during positioning or loading/unloading. The air cushion is used for easy transport or positioning of the glass, while the suction clamp holds the plate for accurate processing.

Positioning aids (stops) move forward for positioning and are then retracted again so as not to be in the way when loading and unloading the glass. The positioners precisely align the glass edges to the coordinate grid.

The transport system is used when the table works together with a loading station and in the case of straight shaped glass sheets, these are automatically loaded and transported from the table (additional delivery).

Patented and compact dust extraction system prevents metal dust from entering the air in the work area. This allows the machine to be used in the normal working conditions of an average plant and installed next to the L-matrix LDC to create a production line.

Machining glass surfaces

Possible machine configurations

Size and power consumption


Machine LxW, mm


Height, mm

Working Area  (LxW), mm

Thickness of glass, mm

Power Consumption




910 - 950

2510x3210 max
300x300 min


23,25 kW




910 - 950

4000x3210 max
300x300 max


26,25 kW




910 - 950

6000x3210 max
300x000 min


29,25 kW

Spraying system

Spraying speed40 mm/s
Spraying materialcopper, zinc, aluminum

Busbar parameters

Widthmin 5 ± 0,5 mm
Thickness (over the glass surface)100 to 300 μm
Cross-section of the busbar0,4 mm²
Adhesion to the surfaceup to 80 Pa (kg/cm²)

* Values are given without regarding time of positioning

Serial production

Glass markingext. option

Operator’s safety

Light barrierext. option
Safety fencingext. option

Other parameters

Operating voltage3/N/РЕ—50Нz 380V
Operating pressure6±0,5 bar
Air consumption450 nl/min
Noise levelmax 80 dB(A)