An apparatus for molding a window, the apparatus includes: a first molding part; a jig disposed below the first molding part, the jig including a bottom surface and a plurality of side surfaces configured to support and seat a work piece to be processed into a window; and an second molding part disposed on the bottom surface, wherein the second molding part includes: a lower surface adjacent to the bottom surface; an upper surface facing the lower surface; a first cavity having a first curved surface generally concave in a direction facing the lower surface; a plurality of second cavities extending from the first cavity, the plurality of second-cavities having second curved surfaces; and a plurality of movable molds disposed on the second-cavities supported for movement along the second curved surfaces, respectively.

The invention relates to a method for producing a glass stopper with a head portion for sealing bottles, more particularly bottles for wine and sparkling wine, wherein an upper mould and a lower mould are provided.

There are provided a glass container that includes mouth portions formed at both end portions thereof facing each other and a manufacturing method of the glass container. Since the glass container is integrally molded by a one-press manufacturing method, the glass container may be more easily manufactured and the mechanical strength of the glass container may be improved in comparison with a case in which portions including mouth portions are separately manufactured and then are integrated with each other. Further, since the glass container is obtained by a one-press manufacturing method, the glass container is thick and has a high-class feeling. A glass container, which is integrally molded by a one-press manufacturing method, includes a first mouth portion and a second mouth portion that are formed at both end portions of the glass container facing each other.

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.

An optical element manufacturing device includes a mold set including: a first shaping mold and a second shaping mold facing each other with a shaping-target material between the first and second shaping molds, and a sleeve located around the first and second shaping molds; and a plurality of stages on which the mold set is conveyed and which heat, press or cool the shaping-target material. The sleeve is conveyed to the stages in such a manner that a conveyance-direction front side of the mold set in an arrangement direction of the plurality of stages has a heat insulation portion with a heat insulation property that is higher than that on a conveyance-direction rear side of the mold set in order to reduce a temperature distribution in the shaping-target material.

The present disclosure provides a suitable method for producing a headlight lens for a vehicle headlight, for example for a motor-vehicle headlight, wherein the headlight lens comprises an integral body made of glass, wherein the integral body comprises at least one light tunnel and one light-passage section having at least one optically active light exit surface, wherein the light tunnel comprises at least one light entry surface and, with a bend, transitions into the light-passage section in order to image the bend as a bright-dark-boundary by means of light directed into the light entry surface.

A method for texturing a substrate includes 3-D printing a pattern onto a substrate to form a texture. The pattern has a root mean square roughness between 40 to 1000 microns and an autocorrelation function greater than 0.5 for distances less than 50 microns.

The present disclosure provides a suitable method for producing a headlight lens for a vehicle headlight, for example for a motor-vehicle headlight, wherein the headlight lens comprises an integral body made of glass, wherein the integral body comprises at least one light tunnel and one light-passage section having at least one optically active light exit surface, wherein the light tunnel comprises at least one light entry surface and, with a bend, transitions into the light-passage section in order to image the bend as a bright-dark-boundary by means of light directed into the light entry surface.

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.

Provided is a method of molding an optical element. The method includes: inserting a neck portion provided in each of an upper mold and a lower mold into a hole portion provided in a side surface mold; replacing an atmosphere in the hole portion of the side surface mold with an inert gas through a groove communicating between either an upper end surface or a lower end surface of the side surface mold and the hole portion of the side surface mold; heating a molding material disposed in the hole portion of the side surface mold; and bringing the upper mold and the side surface mold, and the lower mold relatively close to each other to press molding the molding material to obtain an optical element.