A mold system is provided for use in a glass container mold assembly that includes a base, a first plunger containing cylinder having a first cross-sectional area configured and sized to fit upon the base, and a male mold merger movable between a retracted and extended positioned that is configured tor insertion into a gob of molten glass to form an interior cavity in the gob to form a parison capable of be big blown into a glass container. The mold system comprises an alignment cylinder coaxially coupled to the plunger containing cylinder and having a second cross-sectional area larger than the first cross-sectional area of the plunger containing cylinder for accommodating and receiving a male mold member having a cross-sectional area too large to be accommodated by the first cross-sectional area of the plunger containing cylinder. The alignment cylinder includes an interior passageway.

There are provided a one-press manufacturing method for a glass container that can form uneven shapes on an inner peripheral surface of a glass container and a glass container that is obtained by the one-press manufacturing method. The one-press manufacturing method for a glass container includes the following steps (A) to (E); (A) a step of putting a gob in a pressing mold and then inserting a plunger, which includes an unevenness forming member provided so as to be capable of being received in the plunger, into the gob while the unevenness forming member is received in the plunger, (B) a step of forming a glass container having a finished shape, which includes an uneven shape on an inner peripheral surface thereof, by pressing the unevenness forming member against the surface of the gob, which comes into contact with the unevenness forming member, to the outside from the inside of the plunger, (C) a step of receiving the unevenness forming member in the plunger, (D) a step of extracting the plunger, in which the unevenness forming member is received, from the glass container having a finished shape that includes the uneven shape on the inner peripheral surface thereof, and (E) a step of transporting the glass container having a finished shape, which includes the uneven shape on the inner peripheral surface thereof, to a cooling mold and cooling the glass container having a finished shape.

A method of forming a mould assembly (10) is provided. The method includes providing a mould body (12) defining a mould insert receiving zone (14). The method includes providing a mould insert (16), defining opposed sides (18, 20). One side (18) defines a mould cavity surface (21), against which an article is to be moulded, and the opposed side (20) defines a mould body seating arrangement (22) for seating the mould insert (16) in the mould insert receiving zone (14). The method further includes positioning the mould insert 16 in the mould insert receiving zone (14) of the mould body (12).

A white glass container derived from a phase separation phenomenon of a halogen-free glass composition includes a neck portion and a body portion. The glass composition includes as ingredients at least SiO.sub.2, P.sub.2O.sub.5, Al.sub.2O.sub.3, B.sub.2O.sub.3, R.sub.2O (R=Na or K), MgO, CaO and the like. The neck portion and the body portion respectively have a white multilayer structure formed to successively include a white transparent layer of relatively low white coloration and a white opaque layer of relatively high white coloration from the outer surface side. The contents of P.sub.2O.sub.5 in the white transparent layer are made smaller than the contents of P.sub.2O.sub.5 in the white opaque layer.

The invention relates to a closing mechanism for the mold halves (5) of an I.S. machine, consisting of two yoke-like mold holders (3, 4) which are mounted on parallel guides (1, 2) and can be moved along said guides between a closed position and an open position by means of a drive. A spindle transmission (13) is provided laterally to the guide (1) so as to extend parallel to said guide, consisting of a threaded spindle that is connected to the drive via a transmission (15) and is in engagement with two threaded sleeves, each of which is connected to one of the two mold holders (3, 4), via two threaded sections running in opposite directions for the purpose of producing an opening or closing movement of the mold holders (3, 4). By means of the drive, a servomotor, the opening and closing movement of the mold holders (3, 4) is carried out. Two pneumatically actuated piston-cylinder units (22) are provided in order to apply the clamping force required between the mold holders (3, 4) or the mold halves (5) in the closed position, said units likewise being connected to the mold holders (3, 4) via an interposed toggle lever mechanism. A more structurally simple and reliable design is provided for the closing mechanism, said design also being free of thermal stresses on the basis of a coolant network integrated at least into the mold holders (3, 4).

In a glass product forming machine having molds 1A and 1B each composed of a pair of split molds 11 and 12, and a mold cooling device X for cooling the molds 1A and 1B to control the temperatures thereof, in order to prevent the occurrence of a defect such as deformation or cracks in a formed article due to a temperature difference between the split molds 11 and 12, the mold cooling device X is configured to include: cooling mechanisms 3R and 3L provided to the respective split molds, the cooling mechanisms each individually applying cooling air to each of the split molds 11 and 12 of the molds 1A and 1B; valve mechanisms 30R and 30L for individually opening and closing each of paths for introducing cooling air to the respective cooling mechanisms 3R and 3L; temperature detection means for detecting the temperature of at least one of the split molds; and a temperature control device 9 for generating and outputting control signals for controlling the opening and closing operations of the respective valve mechanisms 30R and 30L on the basis of the detected temperature value by the temperature detection means.

Disclosed is a method of blow molding glass containers that includes blow molding a first glass container with a first lower portion configuration using a common mold body and a first interchangeable mold bottom plate corresponding to the first lower portion configuration of the first glass container; and blow molding a second glass container with a second lower portion configuration different from the first lower portion configuration and using the common mold body and a second interchangeable mold bottom plate different from the first mold bottom plate and corresponding to the second lower portion configuration of the second glass container. Also disclosed are interchangeable mold bottom plates, a mold body common to the mold bottom plates, and blow molds including the plates and the common mold body.

A closed loop blank mold temperature control system and method for use in the operation of an I.S. machine is disclosed for automatically adjusting machine timing to maintain desired blank mold temperature/heat extraction. The closed loop blank mold temperature control system uses measured blank mold temperatures to automatically control the supply of coolant air to the blank molds, which may be done independently to each blank mold half as well as independently to the plunger for each blank mold. The closed loop blank mold temperature control system can provide temperature setpoint commands, balance left and right parison temperatures, and maintain parison temperatures as a setpoint, all of which contribute to enhanced final glass container quality.

An apparatus to sense temperature in a glassware forming machine. A mold body includes an exterior surface, a mold cavity having an interior mold surface, and a blind hole having a closed end including a closed end surface adjacent to and spaced outwardly from the interior mold surface, wherein the blind hole extends outwardly from the closed end surface toward the exterior surface. The mold body is removably carried on a mold hanger, and a light collector is carried by the mold hanger to collect infrared light emitted within the blind hole.

A glass forming machine includes a blank mold hanger and a blank mold. The blank mold hanger includes a blank mold hanger half that supports a blank mold half and provides cooling fluid to at least one axial cooling channel defined in the blank mold half. The blank mold hanger half defines at least one cooling fluid outlet, which is in fluidic communication with the at least one axial cooling channel of the blank mold half. The blank mold hanger half additionally includes at least one flow control valve that is remotely controllable and configured to selectively adjust a flow of cooling fluid through the at least one axial cooling channel of the blank mold half. A method of cooling a blank mold is also described.