Embodiments of the disclosure relate to a method of preparing a multi-piece laminated article. In the method a first glass ply and a second glass ply are co-sagged. The first glass ply is laser cut to form a first primary piece and a first secondary piece, and the second glass ply is laser cut to form a second primary piece and a second secondary piece. The first primary piece and the second primary piece each define a hole into which the first secondary piece and the second secondary piece, respectively, fit. The first primary piece and the second primary piece are laminated to each other to form a first laminated piece, and the first secondary piece and the second secondary piece are laminated to each other to form a second laminated piece. The method can be used to prepare, for example, automotive glazing.

Methods and apparatus provide for: cutting a thin glass sheet along a curved cutting line, where the curve is divided into a plurality of line segments; applying a laser beam and continuously moving the laser beam along the cutting line; applying a cooling fluid simultaneously with the application of the laser beam in order to propagate a fracture in the glass sheet along the cutting line; and varying one or more cutting parameters as the laser beam moves from one of the plurality of line segments to a next one of the plurality of line segments, wherein the one or more cutting parameters include at least one of: (i) a power of the laser beam, (ii) a speed of the movement, (iii) a pressure of the cooling fluid, and (iv) a flow rate of the cooling fluid.

Methods and apparatus provide for: cutting a thin glass sheet along a curved cutting line, where the curve is divided into a plurality of line segments; applying a laser beam and continuously moving the laser beam along the cutting line; applying a cooling fluid simultaneously with the application of the laser beam in order to propagate a fracture in the glass sheet along the cutting line; and varying one or more cutting parameters as the laser beam moves from one of the plurality of line segments to a next one of the plurality of line segments, wherein the one or more cutting parameters include at least one of: (i) a power of the laser beam, (ii) a speed of the movement, (iii) a pressure of the cooling fluid, and (iv) a flow rate of the cooling fluid.

A machine for breaking out an inner shape in a glass sheet, includes a cutting tool and a displacement system to produce a cutting line on a first side of the glass sheet that delimits an outer contour of the inner shape and an inner contour of a peripheral shape; a bearing system to bear against a second side of the sheet along the outer contour of the inner shape; a deformation system to deform one of the inner and peripheral shapes by convex bending toward the second side, the convex bending creating a differential deformation between the inner and peripheral shapes to break out the inner shape along the cutting line and separate the inner shape from the peripheral shape so that a distance needed for a contactless extraction is created, and an extraction system to extract the inner or peripheral shape while the convex bending is maintained.

A machine for breaking out an inner shape in a glass sheet, includes a cutting tool and a displacement system to produce a cutting line on a first side of the glass sheet that delimits an outer contour of the inner shape and an inner contour of a peripheral shape; a bearing system to bear against a second side of the sheet along the outer contour of the inner shape; a deformation system to deform one of the inner and peripheral shapes by convex bending toward the second side, the convex bending creating a differential deformation between the inner and peripheral shapes to break out the inner shape along the cutting line and separate the inner shape from the peripheral shape so that a distance needed for a contactless extraction is created, and an extraction system to extract the inner or peripheral shape while the convex bending is maintained.

A glass plate, containing: a first main surface and a second main surface opposite to each other, wherein an in-plane void region having a plurality of voids is arranged on the first main surface, a plurality of internal void rows each having one void or two or more voids are arranged from the in-plane void region toward the second main surface, and a cut surface obtained by cutting the glass plate to pass through the in-plane void region and the plurality of internal void rows has a compressive stress layer formed by applying a chemical strengthening treatment in the center of the cut surface.

The present disclosure relates to a decorative panel made of flat glass for electronic household appliances, in particular, for large stationary household appliances. The decorative panel comprises a base body made of thermally tempered flat glass with an operational front and an operational back and has at least one digital print on the operational back.

A glass blank is cut out from a glass plate by forming a crack starting portion inside the glass plate by moving a first laser beam relative to the glass plate such that a focal position of the laser beam is located in an inner portion of the glass plate in its thickness direction and the focal position forms a circle when viewed from a surface of the glass plate, then causing cracks to develop from the crack starting portion toward main surfaces of the glass plate, and splitting the glass plate to separate, from the glass plate, a glass blank that includes a separation surface having an arithmetic average surface roughness Ra smaller than 0.01 m and a roundness not larger than 15 m. Thereafter, main surfaces of the glass blank are ground or polished.

A glass blank is cut out from a glass plate by forming a crack starting portion inside the glass plate by moving a first laser beam relative to the glass plate such that a focal position of the laser beam is located in an inner portion of the glass plate in its thickness direction and the focal position forms a circle when viewed from a surface of the glass plate, then causing cracks to develop from the crack starting portion toward main surfaces of the glass plate, and splitting the glass plate to separate, from the glass plate, a glass blank that includes a separation surface having an arithmetic average surface roughness Ra smaller than 0.01 m and a roundness not larger than 15 m. Thereafter, main surfaces of the glass blank are ground or polished.

An electrochromic structure can include a substrate and an electrochromic residue disposed on the substrate. The electrochromic structure can include an electrochromic stack on the substrate. A process can be used to separate the structure. The process can include forming a filament in the substrate and applying a thermal treatment to the substrate. Forming a filament can be performed by applying a pulse of laser energy to the substrate. In a particular embodiment, a filament pattern including a plurality of filaments can be formed in the substrate. The substrate can include mineral glass, sapphire, aluminum oxynitride, spinel, or a transparent polymer.