Method and apparatus for manufacturing glass articles

A process for the production of glass molded articles comprising the steps of manufacturing a bath of molten glass by heating said glass with at least one oxygen enriched air-fuel burner, forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, said cooling gas being cooled at least partly by indirect heat exchange contact with liquid oxygen, wherein it further comprises the step of vaporizing said liquid oxygen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized oxygen to use it at least partly in said at least one oxygen enriched air-fuel burner.

A process for the production of glass molded articles comprising the steps of manufacturing a bath of molten glass, refining said molten glass with at least one oxygen enriched air-fuel burner, forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, said cooling gas being cooled at least partly by indirect heat exchange contact with liquid oxygen, wherein it further comprises the step of vaporizing said liquid oxygen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized oxygen to use it at least partly in said at least one oxygen enriched air-fuel burner.

A process for the production of glass molded articles comprising the steps of forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, sooting the mold cavity with at least one oxy-fuel burner through the flame of which is injected a fluid generating carbonaceous particles by cracking, said cooling gas being cooled at least partly by indirect heat exchange contact with liquid oxygen, wherein it further comprises the step of vaporizing said liquid oxygen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized oxygen to use it at least partly in said at least one oxy-fuel burner.

A process for the production of glass molded articles comprising the steps of forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, polishing the surface of the formed and/or expanded glass article with at least one oxyfuel burner, said cooling gas being cooled at least partly by indirect heat exchange with liquid oxygen, wherein it further comprises the step of vaporizing said liquid oxygen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized oxygen to use it at least partly in said at least one oxyfuel burner.

A process for the production of glass molded articles comprising the steps of forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, polishing the surface of the formed and/or expanded glass articles with at least one oxygen-hydrogen burner, said cooling gas being cooled at least partly by indirect heat exchange with liquid hydrogen, wherein it further comprises the step of vaporizing said liquid hydrogen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized hydrogen to use it at least partly in said at least one oxygen-hydrogen burner.

A process for the production of glass molded articles comprising the steps of forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, providing a flow of pressurized cooling gas to cool the internal and/or external walls of the formed and/or expanded glass article, conveying the formed and/or expanded glass articles on a conveyor belt, sooting said conveyor belt with at least one oxy-fuel burner through the flame of which is injected a fluid generating carbonaceous particles by cracking, said cooling gas being cooled at least partly by indirect heat exchange contact with liquid oxygen, wherein it further comprises the step of vaporizing said liquid oxygen by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized oxygen to use it at least partly in said at least one oxy-fuel burner.

A process for the production of glass molded articles comprising the steps of forming and/or expanding a quantity of molten glass in a mold cavity to form a hollow glass article and conform its wall to the contour of said mold, provinding a flow of pressurized cooling gas to cool the internal and/or external walls, partly filing the hollow glass article with a beverage, inerting said beverage by introducing over the liquid level an inert gas, closing the hollow glass articles, said cooling gas being cooled at least partly by indirect heat exchange contact with an inert liquid, wherein it further comprises the step of vaporizing said inert liquid gas by maintaining an appropriate indirect heat exchange contact with said cooling gas, then recovering said vaporized inert gas to use it at least partly in said inerting step.

An installation for the production of molded glass articles which are pressed and/or blown comprising means for forming and/or expanding a quantity of molten glass in a mold cavity to conform its wall to the contour of said mold, means for blowing cooled air about the mold and/or the glass article walls, means for compressing air, means for drying the compressed air, heat exchanging means for cooling the compressed air before delivering it to the said means for cooling the compressed air before delivering it to the said means for blowing cooled air, means for storing a cryogenic liquid chosen among oxygen, nitrogen and/or hydrogen, means for using a gas chosen among oxygen gas and/or nitrogen gas and/or hydrogen gas, wherein said means for storing a cryogenic liquid are connected to said heat exchanging means which comprises at least one duct adapted to receive the cryogenic liquid at the inlet of the duct connected to said means for storing a cryogenic liquid and to deliver gas at the outlet of said duct which is connected to said means for using a gas.