A method of producing a glass vessel includes holding a borosilicate glass tube with a first holding device, and holding an open end portion of the glass tube with a second holding device such that the second holding device is spaced apart from the first holding device. Heat is applied to the glass tube by a burner to separate the open end portion and form a bottom portion on the open end portion. Fire-blast treatment of an inner surface of the open end portion with a flame from a point burner is performed during at least a part of (i) applying heat to the borosilicate glass tube for separation, (ii) applying heat to the separated open end portion for bottom portion formation, and/or (iii) a period applying heat to the separated open end portion and prior to releasing the glass vessel from the second holding device.

A curved glass manufacturing method includes: successively stacking a lower mold, flat glass, and an upper mold, thereby forming a mold assembly; moving the mold assembly to a first chamber and then heating the same; moving the mold assembly from the first chamber to a second chamber and then pressurizing the upper mold so as to move the upper mold downward, thereby molding the flat glass in a curved shape; moving the mold assembly from the second chamber to a third chamber and then slowly cooling the molded glass; and moving the mold assembly from the third chamber to a fourth chamber and then cooling the molded glass. An elastic member is arranged between the lower mold and the upper mold and configured to define a space between the upper mold and the flat glass, and the elastic member is compressed when the upper mold is pressurized.

There is provided a method for manufacturing a method for manufacturing an optical element, wherein a mold-press molding is performed by use of a material body having a prismatic shape to form a light transmission part and a flange of the optical element, the flange extending outward from the light transmission part. In the manufacturing method, only a corner of the material body to be subjected to a mold transfer to provide an edge face of the flange.

A system for improving transparency and/or smoothness and/or adhesion of layers of a 3D printed object, comprising: a base plate; a 3D printed object mounted on the base plate; a controller; a motion system connected with the base plate and controlled by the controller for enabling movement in Z axis and at least one more axis; and at least one treating device; the at least one treating device configured to be directed towards the 3D printed object for heating a target spot area on one of the outer surface and the inner surface of the 3D printed object during the movement of the base plate.

A method for producing a vial with low alkali elution by removing a deteriorated region caused by processing on an internal surface of a vial is disclosed. The method involves forming vials from borosilicate glass tubes including a first step of forming a borosilicate glass tube into a cup-shaped body by formation of a bottom of a vial, and a second step of forming the cup-shaped body into the vial by formation of a mouth of the cup-shaped body.

A method for producing a vial with low alkali elution by removing a deteriorated region caused by processing on an internal surface of a vial is disclosed. The method involves forming vials from borosilicate glass tubes including a first step of forming a borosilicate glass tube into a cup-shaped body by formation of a bottom of a vial, and a second step of forming the cup-shaped body into the vial by formation of a mouth of the cup-shaped body.

A glass vial including a boron-containing multicomponent glass includes constituents and is partially filled with a pharmaceutical ingredient formulation having a pH in a range from 5 to 9. The glass vial has a total volume of <4.5 mL, a filling level of the glass vial with the formulation is not more than 0.25, and an inner wall of the glass vial has chemical resistance to leaching-out of at least one of the constituents of the multicomponent glass. A ratio of a concentration of a leached-out constituent at a fill volume of 0.5 mL and a concentration of the leached-out constituent at a fill volume of 2 mL is not more than 3 and a ratio between a concentration of the leached-out constituent at a fill volume of 1 mL and the concentration of the leached-out constituent at a fill volume of 2 mL is not more than 2.

A glass vial including a boron-containing multicomponent glass includes constituents and is partially filled with a pharmaceutical ingredient formulation having a pH in a range from 5 to 9. The glass vial has a total volume of <4.5 mL, a filling level of the glass vial with the formulation is not more than 0.25, and an inner wall of the glass vial has chemical resistance to leaching-out of at least one of the constituents of the multicomponent glass. A ratio of a concentration of a leached-out constituent at a fill volume of 0.5 mL and a concentration of the leached-out constituent at a fill volume of 2 mL is not more than 3 and a ratio between a concentration of the leached-out constituent at a fill volume of 1 mL and the concentration of the leached-out constituent at a fill volume of 2 mL is not more than 2.

The present disclosure relates to a method for manufacturing an optical element out of glass, wherein a blank made of glass is laid on an annular contact face of a supporting body having a hollow cross section, and is heated on the supporting body, in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region, wherein the contact face is cooled by means of a cooling medium flowing through the supporting body, wherein following heating the glass blank is press molded to form the optical element.

A technical object of the present invention is to devise a glass sheet that is suitable for supporting a substrate to be processed to be subjected to high-density wiring and has high end surface strength, and a method of manufacturing the glass sheet, to thereby contribute to an increase in density of a semiconductor package. The glass sheet of the present invention has a total thickness variation of less than 2.0 m, all or part of an end surface of the glass sheet including a melt-solidified surface.