A method includes pressing a preform with a mold including a mold body and a plurality of mold protrusions extending from the mold body at a pressing temperature and a pressing pressure sufficient to transform the preform into a shaped article including a plurality of cavities corresponding to the plurality of mold protrusions. The preform is formed from a glass material, a glass-ceramic material, or a combination thereof. The mold body is formed from a porous material. The plurality of mold protrusions is formed from a non-porous material.

The present disclosure relates to a method for manufacturing a hollow glass item and, specifically, to a method for manufacturing an item made of hollow pressed glass. The method includes a step of depositing at least one drop of molten glass into a mold intended for modelling a predetermined outer shape of the glass item to be manufactured; a step of pressing the molten glass into the mold by a shaping punch in order to shape the hollow glass item by hollowing out an inside space; a step of marking the glass item with a marking tool which is independent from the shaping punch, in order to imprint at least one raised and/or recessed pattern in the inside space of the glass item; a step of cooling the marked, pressed glass item; and a step of removing the glass item from the mold.

A glass forming furnace includes a forming zone, a cleaning zone, a plurality of sealing doors, and a conveying channel. The forming zone includes a pressure device. The pressure device includes a servo motor, a push rod, and a mold pressurizing mechanism. The push rod is connected with the servo motor. The push rod includes an end notch and an embedded structure. The mold pressurizing mechanism includes an inlet notch. The inlet notch is connected with the embedded structure. Wherein, the end notch is in contact with the inlet notch. The cleaning zone includes an active brush mechanism. The sealing doors are disposed at an inlet and an outlet of the forming zone, respectively. The sealing doors each include a valve. The valve has a cross-sectional thickness that is gradually decreased from top to bottom. The conveying channel passes through the forming zone and the cleaning zone. The conveying channel is configured to convey a plurality of glass forming molds. The beneficial effect of the present invention is that the heating zone can be sealed and the molds can be cleaned more effectively.

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block (12) of glass raw material held levitated above a forming surface (10a) of a forming die (10) by jetting gas through a gas jet hole (10b) opening on the forming surface (10a), the block (12) of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block (12) of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block (12) of glass raw material or the molten glass.

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block (12) of glass raw material held levitated above a forming surface (10a) of a forming die (10) by jetting gas through a gas jet hole (10b) opening on the forming surface (10a), the block (12) of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block (12) of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block (12) of glass raw material or the molten glass.

The present disclosure relates to a method for producing an optical element from glass, wherein a glass blank is placed on an annular contact surface of a support body with a hollow cross-section, and heated on the support body, in particular in such a way that a temperature gradient is created in the blank in such a way that the blank is cooler on the inside than in the outer region thereof, wherein the contact surface is cooled by means of a coolant flowing through the support body, wherein, after heating, the glass blank is blank-pressed, in particular on both sides, to form the optical element, wherein the contact surface spans a base area that is not circular.

The present application relates to a method for fabricating a vehicle interior trim part. The proposed method comprises the step of providing a glass panel with a backside and a first and a second region. In a further step, a first stiffener is attached to the first region of the glass panel. Thereby, a stiffened region of the glass panel is formed. The method further comprises the step of bending the second region of the glass panel by cold forming so that a bent region of the glass panel is formed in a region adjacent to the stiffened region. The method further comprises the step of holding the glass panel in shape using a means of fixation.

A system for use in glass production technology such as for production of glass packaging, glassware, glass home equipments, wherein the system allows all kinds of design additions such as color, pattern, texture, decor, seal and form changing processes to be applied to the product without requiring re-firing of the product, after removal of the product from the moulds in the production lines while the product is still hot and the temperature is kept constant.

A tool for holding at least one glass pane by means of suction in a bending process, comprising a frame-like, convex contact surface and a cover having a peripheral air guide plate that surrounds the contact surface at least in regions is described. The tool is suitable for generating a first, reduced pressure in a first pressure region between the air guide plate and the contact surface; a second pressure in a second pressure region, which is arranged in a central region inside the contact surface, wherein the second pressure is greater than the first pressure.

A method for manufacturing a mirror blank comprises: providing a primary piece of glass comprising a primary planar surface and a backing piece of glass comprising a backing planar surface; assembling a mirror blank assembly, wherein assembling the mirror blank assembly comprises interposing a plurality of glass splines between the primary glass and the backing glass. Interposing the plurality of glass splines comprises: for each glass spline, respectively abutting first and second opposed surfaces of the glass spline against the primary planar surface of the primary glass and against the backing planar surface of the backing glass. The mirror blank assembly is then heated to fuse the interposed glass splines to the primary glass and the backing glass while the primary glass and the secondary glass remain spaced apart from one another by the interposed glass splines to thereby provide the mirror blank.