To provide a method for manufacturing a medical glass container prevented from breakage and deformation and a fire blasting device. A method for manufacturing a medical glass container includes a processing process of placing a glass container 10 on the outer peripheral surface of each of a first roller 61 and a second roller 62, which are disposed side by side in such a manner that the axis lines are parallel to each other, so that the axis line of the glass container 10 is parallel to the axis lines of the first roller 61 and the second roller 62 and the entire outer peripheral surface in an inner surface 15 of the glass container 10 corresponding to a region deteriorated by processing is made to abut on the outer peripheral surface of each of the first roller 61 and the second roller 62, and then applying a flame ejected from a point burner 30 to the region deteriorated by processing in the inner surface 15 of the glass container 10 while rotating the glass container 10 by rotating the first roller 61 and the second roller 62 around the axis lines.

A hot-forming tool for producing glass containers is provided. The tool includes a forming roller, a holder, and a heat sink. The forming roller has a forming surface. The holder receives the forming roller with the forming roller rotatably mounted on the holder. The heat sink is directly or indirectly connected to the holder. The forming roller is in thermal contact with the heat sink and the heat sink has an internal cooler so that process heat can be transferred from the forming roller to the heat sink.

An apparatus for producing a glass workpiece includes: a device configured to heat a glass until it softens; an inner molding tool configured to mold inner lateral surfaces of the workpiece; an outer molding tool configured to mold outer lateral surfaces of the workpiece, the outer molding tool having a shaping roller with a shaping surface; an accommodating device configured to accommodate the shaping roller, the shaping roller being mounted in a freely rotatable manner in the accommodating device and is fixable during a shaping process by a lockable locking device, the shaping roller being locked with a releasable connection such that the shaping roller can be released and rotated through an angle α in the locking device between individual shaping processes; and an apparatus configured to apply a lubricating oil to the shaping surface of the shaping roller and having an outlet opening configured to dispense the lubricating oil.

Disclosed is an apparatus for manufacturing a glass article obtained by heat-processing a glass tube. The apparatus includes a rotation mechanism that rotates the glass tube, a heating device that heats a portion of the glass tube located toward an end of the glass tube rotated by the rotation mechanism, a gripping mechanism that grips the end of the glass tube heated by the heating device, a movement mechanism that moves the gripping mechanism; and a blower that blows air into the glass tube. The glass tube is melt-cut by moving the gripping mechanism, which is gripping the end of the glass tube, with the movement mechanism in a direction that pulls off the end of the glass tube. The glass tube is melt-cut while the blower is operating to form an opening in a melt-cut end surface of the glass tube.

Disclosed is an apparatus for manufacturing a glass article obtained by heat-processing a glass tube. The apparatus includes a rotation mechanism that rotates the glass tube, a heating device that heats a portion of the glass tube located toward an end of the glass tube rotated by the rotation mechanism, a gripping mechanism that grips the end of the glass tube heated by the heating device, a movement mechanism that moves the gripping mechanism; and a blower that blows air into the glass tube. The glass tube is melt-cut by moving the gripping mechanism, which is gripping the end of the glass tube, with the movement mechanism in a direction that pulls off the end of the glass tube. The glass tube is melt-cut while the blower is operating to form an opening in a melt-cut end surface of the glass tube.

A quartz glass container is shown and described herein. The quartz glass container exhibits a low concentration of surface defects on an inner surface of the container. In aspects hereof, the container may have a surface defect density of 50 or fewer surface defects per square centimeter within a 1 cm band centered 1 cm from the base of the container.

A forming tool for use during a process of converting a glass tube into a glass container, includes a base portion comprising a fluid cavity for containing a fluid and an insertion portion extending from the base portion. The insertion portion includes an external surface sized to fit into an opening of the glass tube. In embodiments, the insertion portion comprises a fluid opening extending from an interior surface thereof to the external surface, the fluid opening configured to deliver the fluid from the fluid cavity between the insertion portion and the glass tube. In embodiments, the forming tool comprises a thermally conductive insert extending through the base portion and the insertion portion, the thermally conductive insert extending through the fluid cavity such that the fluid in the fluid cavity regulates a temperature of the thermally conductive insert.

Methods for providing feedback control of converters for converting glass tubes to glass articles include a model predictive control framework. The methods include operating the converter, providing target values for attributes of the glass articles or glass tubes, measuring the attributes for the glass articles and glass tubes, conditioning the measurement data to remove outlier data points and calculating statistics representative of the measured attributes, and determine updated settings for one or more process parameters from the previous settings, the statistical properties, and the target values, where the updated settings are those that minimize an objective control function for the converter. The methods further include adjusting the process parameters to the updated settings. The model predictive control framework enables feedback control of the converter that compensates for disturbances that act on the process.

Methods for providing feedback control of converters for converting glass tubes to glass articles include a model predictive control framework. The methods include operating the converter, providing target values for attributes of the glass articles or glass tubes, measuring the attributes for the glass articles and glass tubes, conditioning the measurement data to remove outlier data points and calculating statistics representative of the measured attributes, and determine updated settings for one or more process parameters from the previous settings, the statistical properties, and the target values, where the updated settings are those that minimize an objective control function for the converter. The methods further include adjusting the process parameters to the updated settings. The model predictive control framework enables feedback control of the converter that compensates for disturbances that act on the process.

Methods for controlling a converter for converting glass tubes to glass articles include preparing condition sets including settings for a plurality of process parameters, operating the converter to produce glass articles, measuring attributes of the glass articles, operating the converter at each of the condition sets, associating each glass article with a condition set used to produce the glass article and the attributes measured, developing operational models from the attributes measured and the condition sets, determining run settings for each of the plurality of process parameters based on the operational models, and operating the converter with each of the process parameters set to the run settings determined from the operational models.