Process for moulding and producing hollow glass, in particular a glass cap (A) with a hollow area (A) and a ring-shaped protuberance (A), comprising the following steps: providing a moulding apparatus (10) comprising: a preparatory mould (11), lower, composed of two parts or halves (11a, 11b) which can be separated from each other, having a moulding surface (11), and a cavity (11), formed along this moulding surface, corresponding respectively to an external shape (A.sup.Iv) and a shaped protuberance (A) of a hollow glass article (A) to be moulded and produced; a forming member (12), made up of two parts (12a, 12b) which can be separated 0 from each other, which surmounts and engages the lower preparatory mould (11); a pressing member (13) or plunger, upper; anda finishing mould (14); closing (f2) the upper pressing member (13) against the lower preparatory mould (11) with the interposition of a drop of glass (V), in the molten state, so as to form, with the surface moulding element (11) of the preparatory mould (11) and with the respective cavity (11), the external shape (AIv) and the protuberance (A, A), and, with the pressing member (13) the hollow area (A) of the hollow glass article; lifting and extracting (f3) the upper pressing member (13); opening (f4) the two parts (12a, 12b) of the forming member (12), so as to 0 disengage it from the preparatory mould (11) which holds the hollow glass article (A), thus formed; turning (f5) the hollow glass article (A) upside down, holding it and moving it in free air with the preparatory mould (11), and transferring it (f5) to the finishing mould (14); opening the two parts (11a, 11b) of the preparatory mould (11), in order to free the hollow glass article (A); andextracting and removing (f7) the hollow glass article (A), after it has cooled, from the finishing mould (14). The process advantageously allows to produce an article (A) of hollow glass without 0 resorting to the blow moulding technology, as in the conventional processes of the blow-blow and press-blow type.

The present disclosure relates to a mold for manufacturing a glass container including a left mold and a right mold, wherein the left mold includes a left fixed mold; and a left separated mold positioned on a side surface of the left fixed mold, the right mold includes a right fixed mold; and a right separated mold positioned on a side surface of the right fixed mold, the left separated mold is movable forwardly and backwardly while the left fixed mold is stationary, and the right separated mold is movable forwardly and backwardly while the right fixed mold is stationary.

The present disclosure relates to a mold for manufacturing a glass container including a left mold and a right mold, wherein the left mold includes a left fixed mold; and a left separated mold positioned on a side surface of the left fixed mold, the right mold includes a right fixed mold; and a right separated mold positioned on a side surface of the right fixed mold, the left separated mold is movable forwardly and backwardly while the left fixed mold is stationary, and the right separated mold is movable forwardly and backwardly while the right fixed mold is stationary.

A system for forming a glass article includes a mold assembly and a burner assembly. The mold assembly includes a mold body that defines an open cavity configured to receive a glass-containing material in a molten state. The mold assembly further includes a plunger configured to be actuated towards the mold body and into the open cavity to press the glass-containing material into a closed volume defined by the mold body and the plunger. The mold assembly further includes (i) first surfaces that define the closed volume and (ii) one or more pairs of second surfaces that make sliding contact when the plunger is actuated. The burner assembly is configured to form a solid lubricant on active surfaces of the mold assembly. The active surfaces include all the first surfaces and at least one second surface of each of the one or more pairs of second surfaces.

A curved glass and a preparation method is provided. The preparation method for curved glass includes: melting a glass batch into a glass liquid, and clearing the glass liquid; introducing the cleared glass liquid into a mold cavity with a preset shape, and forming, by using a compression molding process, a glass product with a shape corresponding to that of the curved glass, where a size of the glass product is greater than a size of the curved glass; annealing the molded glass product; and processing the annealed glass product into the curved glass based on the shape and the size of the curved glass.

A curved glass and a preparation method is provided. The preparation method for curved glass includes: melting a glass batch into a glass liquid, and clearing the glass liquid; introducing the cleared glass liquid into a mold cavity with a preset shape, and forming, by using a compression molding process, a glass product with a shape corresponding to that of the curved glass, where a size of the glass product is greater than a size of the curved glass; annealing the molded glass product; and processing the annealed glass product into the curved glass based on the shape and the size of the curved glass.