PRESS-GLAS

There is the possibility that small micro-breaks on the edges of cut formats may occur during
the cutting process.

Thanks to the process of grinding edges, the risk of breaking as a result of increased inner
tensions under insolation (thermal stresses) or under the influence of mechanical forces

(forced compressions, physical blows and others) is lowered. Due to this characteristic, extra processing
of edges is commonly used for toughened glass. Grinding of edges is also done in order to increase
the safety of using the glass, e.g. in walls and ‘frameless doors’, where the danger of injury exists.

To practice proper aesthetics, there is the extra possibility of polishing the edges after grinding.
The use of glass as table tops, in furniture or glass shelvings, and in decora-tions of interiors,
requires high aesthetics of finishing.

Advantages

Glass with ground edges:
risk of self-breaking, resulting from micro-breaks occurring during the cutting process is lowered,
no risk of hurting anybody who comes into contact with the glass edge,
high aesthetics of finishing.

Chamfering edges

To achieve specific aesthetics of processing with regard to edges, chamfering is added.
It makes the product more at-tractive, which is of particular importance if the glass is used
as a component of interior architecture. Wide chamfers made on the edges of the glass pane
lead to the dispersion of passing light and produce coloured spectra on these surfaces.

Market offer

Window panes with ground edges:

triangular, rectangular and polygonal shapes with straight edges,
in the shape of single formats or double and triple glazing,
as tempered glass,
covered with silicon coatings and enamelled,
silk screen printed.

Applications

The characteristics of tempered and machined glass allow for a wide application
in different industries.

Building structures:

glazing the facades of buildings in columnar-transom systems,
glazing the facades of buildings in structural systems,
glazing in point fastening systems,
glazing of skylights,
glazing the partition walls,
filling of railings and balconies,
frameless glass door systems,
glass stairs.

Fittings and decorations of interior:

table tops,
components of furniture,
glass shelvings,
shower cabins.

Household appliances:

components of refrigerators and freezers,
components of cookers and cooking ovens.

	Machining type	Minimum panel dimensions [mm] concerns glass less than 20 mm thick	Maximum panel dimensions [mm]	Glass thickness [mm]
Grinding and polishing of edges Processing glass of polygonal shapes with straight edges	Trapezium cut, polishing, edges chamfering - angle 0÷60	80x150	2700x5000	3-35

Grinding and polishing of edges - horizontal grinder line Processing of glass with rectangular shapes
Type of glass	Machining type	Minimum panel dimensions [mm]	Maximum panel dimensions [mm]	Glass thickness [mm]	Colour of glass
Float glass	Trapezium cut, polishing	100 x 200	5000 x 2700	3 - 19	clear
Ornamental glass	Trapezium cut, polishing		3210 x 2000		clear, brown
Float glass with Low-e layer (Thermofloat)	Trapezium cut, polishing		5000 x 2700		clear
Solar control glass with on-line layer	Trapezium cut, polishing		5000 x 2700		gray, brown, green, blue, clear
Solar control glass with of-line layer	Trapezium cut, polishing		5000 x 2700		gray, brown, green, blue, clear
Body tinted solar control glass	Trapezium cut, polishing		5000 x 2700		gray, brown, green, blue

Grinding and polishing of edges - vertical grinder * Processing of glass with polygonal shapes with straight edges
Type of glass	Machining type	Minimum panel dimensions [mm]	Maximum panel dimensions [mm]	Glass thickness [mm]	Colour of glass
Float glass	Trapezium cut, polishing, edges chamfering***	80 x 150**	2500 x 2500	3 - 35	clear
Ornamental glass	Trapezium cut, polishing		2500 x 2000		clear, br±zowy
Float glass with Low-e layer (Thermofloat)	Trapezium cut, polishing		2500 x 2500		clear
Solar control glass with on-line layer	Trapezium cut, polishing		2500 x 2500		gray, brown, green, blue, clear
Solar control glass with of-line layer	Trapezium cut, polishing		2500 x 2500		gray, brown, green, blue, clear
Body tinted solar control glass	Trapezium cut, polishing, edges chamfering***		2500 x 2500		gray, brown, green, blue

* Maximum panel weight 400 kg
** Minimum dimension concerns glass less than 20 mm thick
*** Chamfer is possible with angles α = 0 – 60^o