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Technology

1.CUTTING:
VÁGÁS Operation, where final dimensions are achieved by cutting machines. For this purpose, numeric control cutting and detaching machines are available in our company. Rolled glass can be cut in our workshops, as well.
  • Glass thickness possible to be cut: up to 2 - 19 mm
  • Maximum size possible to be cut: 3210 mm x 6000 mm with single layer glasses
2. GRINDING:
CSISZOLÁS Rounding off the cutting edge as well as the fissures along the marginal edges of the glass, by grinding. For grinding operations half-automated grinding machines, three-head shape grinding machines, as well as computer-controlled central processing units are available in our endowment.
  • Possible glas thickness 4 - 19 mm.
    TYPICAL MARGINAL GRINDING:
    • Gross edge grinding (deburring): Bevelling the two cutting edges all around the glass margin at 0.5-1.5x45°, by grinding. Hardened glass margins must be ground for technological reasons.
    • Smooth edge grinding: Beyond bevelling the two cutting edges all around the glass margin, the glass sheet edge is re-ground over its entire cross-section, in a matt color.
    • Glossy edge grinding: The entire surface of the glass sheet is ground and polished (glazed).
    • Both smooth and glossy edge grinding can be performed in various shaped profiles such as "C", "I", etc.
3. DRILLING:
FÚRÁS Bores can be made in both sides of the glass, using special carbide drills customary in the glass industry, fitted into copper bearings as a carrying support, under permanent water cooling conditions.
  • Minimum diameter of the bores d = 4 mm, but at least the glass thickness, in cases where the glass is thicker.
  • Glass thicknesses possible to be drilled: up to 3-19 mm.
4. ETCHING:
MARÁS This is acomplished by special chemical milling machines using diamond granules (carbide) that are customary in the glass industry, in order to cut out various shapes, under permanent water cooling conditions. Surfaces etched in this way are mat. Otherwise, should requirements be different, such glasses can be further processed (polished, profile ground). Special shaped glasses featuring a small tolerance are manufactured using our computer-controlled central processing units. Maximum glass size possible to be processed: 2,000 mm x 4,000 mm.
5. CUTTING OUT:
  Processing required for frameless glass accessories. Cut-outs are made using special diamond granule (carbide) disks that are customary in the glass industry, fitted into copper bearings, as a carrying support, under permanent water cooling conditions. For such cutting out purposes special cutting machines or, in cases where high precision is a must, central processing units are used.
6. PAINTING:
FESTÉS Ceramic layer applied and hardened by pyrolysis onto the glass surface. Decorations chosen by our partners as well as designs planned by them are possible to be screen printed in one single or two colors, using half-automatic sifters as well as roll painting and drying machines. Painting can be performed using a reference template, or according to the RAL color scale.
  • Maximum size for screen printing: 1600 mm x 3400 mm.
  • Minimum size for screen printing: 100 mm x 250 mm.
  • Maximum width for parapet painting: 1600 mm.
6.1. Surface (parapet) painting: ceramic surface impressed continuously, all over the entire surface..
6.2. Raster painting: partial impression using dot or hole raster directed towards the inner side of the glass.
6.3. Decoration painting: geometrical lines in an arbitrary arrangement, logos.
7. SANDING:
FESTÉS Common corundum granules are electically spread at a high pressure over the glass, to result in a mat surface. For decoration sanding purposes, individually designed patterns are cut out from self-adhesive foils using plotters, in order to be stuck onto the glass. Then the portions left free are spread all over. After sanding, the glass is prone to collect dirt, so that a special solution is used to treat it in order to obtain an adherence-free surface, which hardly ever becomes dirty and can be cleaned easily. Sanding is performed using our NC half-automated plants
8. HARDENING:
FESTÉS The glass is heated beyond the so called transformation temperature above cca. 650°C, while the glass is in a perpetual motion (in order to avoid deformation), then it is suddenly air cooled. Due to this, its withstanding capacity increases 2-3 times and subsequently it resists even 150°C temperature variations. After the heat treatment the so hardened securite glass cannot be processed any more, falling apart into small dull- edged pieces, which do not represent any accident hazard.
  • Minimum size 100 x 250 mm
  • Maximum size: 2400 x 3900 mm (for 4-19 mm thick glasses)
9. INSULATION:
FESTÉS Insulating glasses are multi-layer structures made up of two or several, either normal or special (colored, heat-protective, sun-protective, noise-protective, securite etc.) flat glass sheets, where individual glass sheets are separated in between them along the margins by an airtightly sealed air or gas layer. Quality insulation glasses are made using our automatic manufacturing lines. Insulating glass applications may even result in U=1.1 W/m2K values.
Assembling procedure:
  • washing and rinsing in properly de-mineralized water;
  • cutting spacers to dimension, filling with vapour absorbant substance and assembling;
  • application of primary sealing substance (butyl);
  • assembling spacer frames with glasses;
  • pressing;
  • gas filling in cases of enhanced heat insulation;
  • application of secondary sealing-binding substance (two component polysulphite, or silicone).