A liquid blow molding method molds a bottomed tubular-shaped preform into a liquid-containing container in which a content liquid is held. The liquid blow molding method includes: a first molding step of liquid blow molding the preform into a halfway shape by supplying, into the preform that has been heated to a predetermined temperature, a first liquid at a predetermined pressure through a nozzle unit; and a second molding step, performed after the first molding step, of liquid blow molding the preform by supplying a second liquid into the preform at a predetermined pressure through the nozzle unit.

A configuration including: a primary blow molding station including: an injection molding part configured to injection-mold a plurality of preforms simultaneously; a primary blow molding part configured to blow-mold the preform to form a first blow-molded article; and a first transport device including a first transport path and configured to intermittently circulate and transport a plurality of the preforms and the first blow-molded article along the first transport path at a predetermined interval; and a secondary blow molding station installed independently of the primary blow molding station, the secondary blow molding station including: a secondary blow molding part configured to blow-mold the first blow-molded article to form a resin container; and a second transport device configured to hold the first blow-molded article at a downstream side of the primary blow molding part in the first transport path and transport the first blow-molded article to the secondary blow molding part.

A configuration including: a primary blow molding station including: an injection molding part configured to injection-mold a plurality of preforms simultaneously; a primary blow molding part configured to blow-mold the preform to form a first blow-molded article; and a first transport device including a first transport path and configured to intermittently circulate and transport a plurality of the preforms and the first blow-molded article along the first transport path at a predetermined interval; and a secondary blow molding station installed independently of the primary blow molding station, the secondary blow molding station including: a secondary blow molding part configured to blow-mold the first blow-molded article to form a resin container; and a second transport device configured to hold the first blow-molded article at a downstream side of the primary blow molding part in the first transport path and transport the first blow-molded article to the secondary blow molding part.

A blow molding device includes: a base; an injection molding unit manufacturing a bottomed preform made of resin; a blow molding unit; a support part supporting the preform; and a conveying unit conveying the support part to the blow molding unit. The blow molding unit includes: a blow mold; a movement unit capable of moving the blow mold relative to the support part; one mold opening and closing mechanism; and a pair of mold opening and closing plates connected to the mold opening and closing mechanism. The moving unit is configured to move the blow mold in a non-coupling state to a position between the pair of mold opening and closing plates, the blow mold in the non-coupling state being not coupled to the pair of mold opening and closing plates and not located between the pair of mold opening and closing plates.

A blow molding device includes: a base; an injection molding unit manufacturing a bottomed preform made of resin; a blow molding unit; a support part supporting the preform; and a conveying unit conveying the support part to the blow molding unit. The blow molding unit includes: a blow mold; a movement unit capable of moving the blow mold relative to the support part; one mold opening and closing mechanism; and a pair of mold opening and closing plates connected to the mold opening and closing mechanism. The moving unit is configured to move the blow mold in a non-coupling state to a position between the pair of mold opening and closing plates, the blow mold in the non-coupling state being not coupled to the pair of mold opening and closing plates and not located between the pair of mold opening and closing plates.

A manufacturing device of the present invention includes an intermediate molded body mold having a first accommodating space capable of accommodating a plurality of preforms, each preform having a mouth portion and a trunk portion; an intermediate molded body blowing unit configured to blow gas into the plurality of preforms arranged in the first accommodating space to inflate the plurality of preforms, thereby manufacturing an intermediate molded body having a connection portion formed by the trunk portions of the plurality of preforms welded to each other; a final molded body mold having a second accommodating space larger than the first accommodating space; and a final molded body blowing unit configured to blow gas into the intermediate molded body arranged in the second accommodating space to inflate the intermediate molded body, thereby forming an exterior shape of a multiple-chamber container.

A manufacturing device of the present invention includes an intermediate molded body mold having a first accommodating space capable of accommodating a plurality of preforms, each preform having a mouth portion and a trunk portion; an intermediate molded body blowing unit configured to blow gas into the plurality of preforms arranged in the first accommodating space to inflate the plurality of preforms, thereby manufacturing an intermediate molded body having a connection portion formed by the trunk portions of the plurality of preforms welded to each other; a final molded body mold having a second accommodating space larger than the first accommodating space; and a final molded body blowing unit configured to blow gas into the intermediate molded body arranged in the second accommodating space to inflate the intermediate molded body, thereby forming an exterior shape of a multiple-chamber container.

This method for manufacturing a resin container includes injection molding a plurality of preforms in an arrangement direction, a adjusting the temperature of the preforms, and molding containers from the preforms. The manufacturing method includes, between the injection molding and the temperature adjusting, changing the orientation of the preforms aligned in the arrangement direction to an orientation aligned in a conveying direction.

A method for producing a blow molded plastic bottle starting from a preform comprises providing a preform with a specific wall thickness distribution and a blow mold are provided, the cavity of the mold having at least one channel at the locations of the plastic bottle that are to be strengthened. Subsequently, the preform is heated in such a way that the portion of the preform that correlates with the channel of the cavity is thinned to a lesser extent during the stretching and/or blow, and an accumulation of plastics material is brought about in the channel during the main blow molding operation. A plastic container produced by this process has strengthening elements formed as at least one outwardly protruding bead of material and have a wall thickness that is at least 30%, greater than the wall thickness of a portion of the wall adjacent to the bead of material.

A method for producing a blow molded plastic bottle starting from a preform comprises providing a preform with a specific wall thickness distribution and a blow mold are provided, the cavity of the mold having at least one channel at the locations of the plastic bottle that are to be strengthened. Subsequently, the preform is heated in such a way that the portion of the preform that correlates with the channel of the cavity is thinned to a lesser extent during the stretching and/or blow, and an accumulation of plastics material is brought about in the channel during the main blow molding operation. A plastic container produced by this process has strengthening elements formed as at least one outwardly protruding bead of material and have a wall thickness that is at least 30%, greater than the wall thickness of a portion of the wall adjacent to the bead of material.