A method for producing a solid body of glass is described. The method comprises providing a polymerisable composition, curing the polymerisable composition to obtain a cured body, subjecting the cured body to thermal debinding to substantially remove the organic components in the cured body, and subjecting the cured body to sintering to obtain a solid body of silica glass. The polymerisable composition one or more at least partially organic polymerisable compound(s) which form a liquid composition at operating temperature and a solid source of silica as colloidal silica particles or silica glass micro-/nanoparticles dispersed in the liquid composition. The one or more at least partially organic polymerisable compounds comprises at least one organosilicon compound as a second source of silica that is liquid or solubilisable in the liquid composition at operating temperature to thereby increase the silica loading of the cured body prior to sintering. Compositions and methods for producing solid glass objects by additive manufacturing are also described.

A method of forming a multi-colored glass substrate comprises: irradiating a first region of a glass substrate with a first high energy source to form a first irradiated glass substrate; and subjecting the irradiated glass substrate to a first heat treatment to form a first heat treated glass substrate, wherein the first heat treated glass substrate comprises a second region having a different transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, than the first region.

A method of forming a multi-colored glass substrate comprises: irradiating a first region of a glass substrate with a first high energy source to form a first irradiated glass substrate; and subjecting the irradiated glass substrate to a first heat treatment to form a first heat treated glass substrate, wherein the first heat treated glass substrate comprises a second region having a different transmittance color coordinate in the CIELAB color space, as measured at an article thickness of 1.33 mm under F2 illumination and a 10° standard observer angle, than the first region.

The present invention discloses a method for preparing a full-body marble-patterned glass mosaic, comprising mixing a glass powder with an additive to obtain a mixture; adding water to the mixture and mixing thoroughly; granulating and sieving to obtain base clay body powder; mixing a colorant and a flux according to a specific ratio to obtain a colorant mixture in powder form; distributing the base clay body powder and the colorant mixture into multiple layers via a mold; press-molding to obtain a clay body; firing the clay body to obtain the full-body marble-patterned glass mosaic. Accordingly, the present invention provides a full-body marble-patterned glass mosaic prepared by the method described above. The glass mosaic of the present invention has a strong layering texture and a well-defined structure, and it faithfully resembles the pattern and texture of natural marble.

The present invention discloses a method for preparing a full-body marble-patterned glass mosaic, comprising mixing a glass powder with an additive to obtain a mixture; adding water to the mixture and mixing thoroughly; granulating and sieving to obtain base clay body powder; mixing a colorant and a flux according to a specific ratio to obtain a colorant mixture in powder form; distributing the base clay body powder and the colorant mixture into multiple layers via a mold; press-molding to obtain a clay body; firing the clay body to obtain the full-body marble-patterned glass mosaic. Accordingly, the present invention provides a full-body marble-patterned glass mosaic prepared by the method described above. The glass mosaic of the present invention has a strong layering texture and a well-defined structure, and it faithfully resembles the pattern and texture of natural marble.

The invention relates to an arrangement of a furnace and of bulk material of glass particles, said furnace (10) comprising a pressing punch (36), a pressure, distance and/or speed sensor and a control device for controlling a pressing process based on the output signal of the sensor. The sensor detects at least a pressure, position and/or motion parameter of the pressing punch (36). The pressing punch (36) acts on the bulk material of glass particles (32)—possibly via an interposed ram (28)—, said glass particles being guided and crystallizable in a press channel (30). The trigger criterion for the process control is a change of at least a motion parameter of the pressing punch (36) upon softening of the bulk material of glass particles (32) which change is detected by the sensor.

The invention relates to an arrangement of a furnace and of bulk material of glass particles, said furnace (10) comprising a pressing punch (36), a pressure, distance and/or speed sensor and a control device for controlling a pressing process based on the output signal of the sensor. The sensor detects at least a pressure, position and/or motion parameter of the pressing punch (36). The pressing punch (36) acts on the bulk material of glass particles (32)—possibly via an interposed ram (28)—, said glass particles being guided and crystallizable in a press channel (30). The trigger criterion for the process control is a change of at least a motion parameter of the pressing punch (36) upon softening of the bulk material of glass particles (32) which change is detected by the sensor.

A glass includes a first glass portion and a second glass portion. The first glass portion has a higher ion packing density than the second glass portion (has a composition that forms a glass in which, out of plastic deformation characteristics, plastic flow is dominant). The second glass has a lower ion packing density than the first glass portion (has a composition that forms a glass in which, out of the plastic deformation characteristics, densification is dominant).

A glass includes a first glass portion and a second glass portion. The first glass portion has a higher ion packing density than the second glass portion (has a composition that forms a glass in which, out of plastic deformation characteristics, plastic flow is dominant). The second glass has a lower ion packing density than the first glass portion (has a composition that forms a glass in which, out of the plastic deformation characteristics, densification is dominant).

The present invention discloses a method for preparing a full-body marble-patterned glass mosaic, comprising mixing a glass powder with an additive to obtain a mixture; adding water to the mixture and mixing thoroughly; granulating and sieving to obtain base clay body powder; mixing a colorant and a flux according to a specific ratio to obtain a colorant mixture in powder form; distributing the base clay body powder and the colorant mixture into multiple layers via a mold; press-molding to obtain a clay body; firing the clay body to obtain the full-body marble-patterned glass mosaic. Accordingly, the present invention provides a full-body marble-patterned glass mosaic prepared by the method described above. The glass mosaic of the present invention has a strong layering texture and a well-defined structure, and it faithfully resembles the pattern and texture of natural marble.