The present application includes an injection molding step and a stretch blow molding step. The stretch blow molding step is configured to include: a first step in which preliminary blow air is introduced into a preform to stretch the preform in a state in which a stretching rod does not contact the bottom of the preform; a second step which is executed after the first step, and in which the preliminary blow air is introduced into the preform and the stretching rod is moved at a set speed and pressed against the bottom of the preform to stretch the preform; and a third step which is executed after the second step, and in which final blow air is introduced into the preform to stretch the preform.

Method of manufacturing containers by blow-molding preforms, comprising a phase of heating the preforms (3) followed by a phase of forming the containers (this phase comprising a pre-blowing step followed by a blowing step), this method comprising the operations consisting in: detecting a pressure spike during the pre-blowing and comparing it against a reference spike, if the pressure in the pressure spike is below the reference pressure, checking an event history to determine whether a heating instruction and/or a forming instruction has been modified; if the result of this check is positive, commanding at least one of the following actions: o generating an alert alarm, o stopping the supply of preforms to the oven, o ejecting the containers derived from the affected preforms.

Method of manufacturing containers by blow-molding preforms, comprising a phase of heating the preforms (3) followed by a phase of forming the containers (this phase comprising a pre-blowing step followed by a blowing step), this method comprising the operations consisting in: detecting a pressure spike during the pre-blowing and comparing it against a reference spike, if the pressure in the pressure spike is below the reference pressure, checking an event history to determine whether a heating instruction and/or a forming instruction has been modified; if the result of this check is positive, commanding at least one of the following actions: o generating an alert alarm, o stopping the supply of preforms to the oven, o ejecting the containers derived from the affected preforms.

A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

The present invention relates to a pressure vessel, comprising a connecting element, an inner vessel and a support shell which surrounds the inner vessel, wherein the pressure vessel has the following features: the connecting element comprises a neck section in the form of a sleeve and a shoulder section; the connecting element is bonded via its outer face to an inner face of the inner vessel; the inner vessel is bonded to the support shell in such a way that the inner vessel is arranged in a sandwich-like manner at least in sections between the connecting element and the support shell; and the pressure vessel has at least one orifice delimited by the neck section of the connecting element, wherein the pressure vessel is characterized in that the outer face of the connecting element facing the inner vessel at least partly has a mean roughness of more than 50 m.

The present invention relates to a pressure vessel, comprising a connecting element, an inner vessel and a support shell which surrounds the inner vessel, wherein the pressure vessel has the following features: the connecting element comprises a neck section in the form of a sleeve and a shoulder section; the connecting element is bonded via its outer face to an inner face of the inner vessel; the inner vessel is bonded to the support shell in such a way that the inner vessel is arranged in a sandwich-like manner at least in sections between the connecting element and the support shell; and the pressure vessel has at least one orifice delimited by the neck section of the connecting element, wherein the pressure vessel is characterized in that the outer face of the connecting element facing the inner vessel at least partly has a mean roughness of more than 50 m.

A blow molding device for blow molding preforms into a predetermined shape. The blow molding device includes a batch-type mold provided with cavities, a heating furnace that heats preforms while the preforms are arranged in series, a transfer machine that simultaneously transfers the preforms as a batch to the cavities of the mold after the preforms are heated and sent out sequentially from the heating furnace, and a pressurized liquid feeder that feeds pressurized liquid to the preforms after the preforms are arranged in all of the cavities of the mold and the mold is closed.

The present application includes an injection molding step and a stretch blow molding step. The stretch blow molding step is configured to include: a first step in which preliminary blow air is introduced into a preform to stretch the preform in a state in which a stretching rod does not contact the bottom of the preform; a second step which is executed after the first step, and in which the preliminary blow air is introduced into the preform and the stretching rod is moved at a set speed and pressed against the bottom of the preform to stretch the preform; and a third step which is executed after the second step, and in which final blow air is introduced into the preform to stretch the preform.

The present application includes an injection molding step and a stretch blow molding step. The stretch blow molding step is configured to include: a first step in which preliminary blow air is introduced into a preform to stretch the preform in a state in which a stretching rod does not contact the bottom of the preform; a second step which is executed after the first step, and in which the preliminary blow air is introduced into the preform and the stretching rod is moved at a set speed and pressed against the bottom of the preform to stretch the preform; and a third step which is executed after the second step, and in which final blow air is introduced into the preform to stretch the preform.