Abstract: In a manufacturing method for a delamination container, in a first injection molding, a first recess portion is formed by a first protrusion portion in at least part of a first layer. In a second injection molding, a second recess portion which penetrates the first layer and through which a surface of a second layer is exposed is formed in a preform by inserting a second protrusion portion into the first recess portion. During a blow molding, the second recess portion is stretched to form an air introduction hole in an outer layer of the delamination container.

Abstract: A resin container manufacturing device includes: an injection molding part configured to injection-mold a first number of bottomed resin preforms by using an injection molding mold including an injection core mold and an injection cavity mold; a temperature adjustment part including a housing member configured to receive and perform temperature adjustment on the preforms demolded from the injection core mold in a high-temperature state; and a blow molding part configured to receive the preforms from the temperature adjustment part and blow-mold the preforms into resin containers. The injection core mold is configured to reciprocate between an injection molding position and a demolding position of the preforms. The temperature adjustment part is configured to perform the temperature adjustment by dividing the preforms housed in the housing member into a third number of groups each including a second number of preforms smaller than the first number.

Abstract: A preform including: an opening portion; a body portion; and a bottom portion, the preform having a two-layer structure in which the body portion and the bottom portion include an inner layer made of a virgin material and an outer layer made of a recycled material, in which a weight ratio of the recycled material to a total weight of the preform is 50% by weight or more, a ratio of a thickness of the outer layer to a thickness of the inner layer in the body portion is 1.5 or more, and a haze of a body portion of a container molded from the preform is 1.8% or less.

Abstract: In a configuration in which a guide member that guides an intermediate member to be slidably movable is provided on an upper surface of side support plates, a bending buffer portion is provided in a first region of the side support plates which is located more outward than a part of the side support plates on which the guide member is provided. The bending buffer portion is configured to be bent and deformed easier than a second region of the side support plates in which the guide member is provided.

Abstract: A temperature adjustment mold for a blow molding apparatus provided with at least an injection molding unit that injection-molds a preform made of a resin and having a bottomed shape, a temperature adjusting unit that adjusts a temperature of the preform manufactured by the injection molding unit, and a blow molding unit that blow-molds the preform to manufacture a resin container, the temperature adjustment mold including a cavity mold that accommodates the preform, and an air introduction member that includes a fitting core and a rod member with a multiple-tube structure to form at least three concentric air flow paths.

Abstract: A blow molding machine includes a support member that supports a mold component and a moving mechanism that moves the support member to a projecting position toward the outside of the machine and to a storing position. The machine includes a first fixed fulcrum shaft. The support member includes a base end portion rotatably supported by the first fixed fulcrum shaft and a free end portion having a first movable fulcrum shaft. The moving mechanism has rotatably interconnected links. One link is rotatably supported by the movable fulcrum shaft. In the projecting position, the links are maintained linearly by a first angle fixing tool to serve as a leg portion that supports the support member's free end portion.

Abstract: A method for manufacturing a resin container includes a first step of accommodating an injection-molded bottomed resin preform in a temperature-adjusted mold and adjusting a temperature of the preform by the mold, a second step of moving the mold by a predetermined amount in an axial direction with respect to the preform by a lifting and lowering device and then stopping the mold, and causing an air ejection part arranged on an upper surface side of the mold to face a portion of the preform to be cooled, a third step of ejecting air from the air ejection part to locally cool the portion to be cooled of the preform positioned in the axial direction, and a blow molding step of blow molding the preform whose temperature has been adjusted through the first to third steps and manufacturing a resin container.

Abstract: A double-walled resin container includes: an outer container made of resin and having a tapered shape in which an upper surface is opened, a bottom surface is closed, and a diameter is reduced from an upper surface side to a bottom surface side; and an inner container made of resin and inserted into the outer container from the upper surface side, the double-walled resin container including a heat insulating space in a gap between the outer container and the inner container. The outer container and the inner container are each formed by a biaxial stretch blow method.

Abstract: A temperature adjustment device and a temperature adjustment method for a preform in a blow molding device with which it is possible to reduce a molding cycle time is provided. A temperature adjustment device for a preform in which a hollow rod member is inserted into an injection-molded, bottomed preform retained by a retention member, and a first air circulation path is formed between the preform and the hollow rod member to adjust the temperature of the preform. The temperature adjustment device is characterized in that a flow path adjustment member is fitted and attached to the outer periphery of the hollow rod member, whereby the cross-sectional area of the first air circulation path is partially adjusted and changed.

Abstract: This resin-made container is provided with: a neck portion having a content inlet-outlet portion; a lateral surface portion connected to the neck portion; and a bottom portion that is disposed on the side opposite to the neck portion and that is connected to the lateral surface portion. The resin-made container is produced by a stretch blow molding process. The bottom portion has formed therein a bulge section that protrudes downward in the vertical direction. The bulge section is disposed in an eccentric region, of the bottom portion, positioned outside a region demarcated by perpendicularly projecting an opening plane of the inlet-outlet portion of the neck portion.

Abstract: Provided is a resin container manufacturing method including: an injection molding process of injection molding a plurality of preforms along a predetermined arrangement direction; a temperature adjustment process of adjusting a temperature of the preform; and a blow molding process of molding a resin container from the preform. After the injection molding process, the preform and the container are conveyed along a conveying direction intersecting the arrangement direction over the temperature adjustment process and the blow molding process. The temperature adjustment process includes a first temperature adjustment process of adjusting the temperature of the preform, a second temperature adjustment process of adjusting the temperature of the preform under a condition different from that of the first temperature adjustment process, and a fine adjustment process of finely adjusting the temperature of the preform.

Abstract: A manufacturing apparatus for manufacturing a resin molded article includes: an injection molding part configured to inject resin into an injection mold and injection-mold the resin molded article; a control unit configured to control the injection by the injection molding part; a calculation unit configured to calculate a pressure reduction curve for reducing a pressure generated by the injection; and an input unit via which a user inputs a condition of the pressure reduction curve, in which the control unit is configured to control the injection based on the pressure reduction curve.

Abstract: A blow molding mold in which a holding mechanism is independently provided to a bottom mold and is configured to be capable of gripping a protruding portion provided to a bottom portion of a preform independently of a gate portion, and a rotation mechanism is configured to be capable of rotating the bottom mold, relative to a neck portion of the preform which is in a stationary state held by neck molds, in a state where the protruding portion is gripped by the holding mechanism.

Abstract: A temperature adjustment mold for a blow molding apparatus provided with at least an injection molding unit that injection-molds a preform made of a resin and having a bottomed shape, a temperature adjusting unit that adjusts a temperature of the preform manufactured by the injection molding unit, and a blow molding unit that blow-molds the preform to manufacture a resin container, the temperature adjustment mold including a cavity mold that accommodates the preform, and an air introduction member that includes a fitting core and a rod member with a multiple-tube structure to form at least three concentric air flow paths.

Abstract: There is provided a resin container manufacturing apparatus configured to stretch a preform disposed in a stretch blow molding mold by a stretching rod and stretch the preform by introducing blow air into the preform so as to form a resin container. The resin container manufacturing apparatus includes detection means for detecting an actual position of the stretching rod inserted into the preform, and supply control means for controlling a supply state of the blow air based on a detection result of the detection means.

Abstract: A manufacturing apparatus for manufacturing a resin container including an injection molding part configured to injection-mold a preform, and a temperature adjustment part configured to adjust a temperature of the preform molded in the injection molding part. The manufacturing apparatus is configured to blow-mold the preform whose temperature has been adjusted in the temperature adjustment part. The injection molding part includes an injection core mold and an injection cavity mold, and both the injection core mold and the injection cavity mold include a flow path connected to a chiller in which coolant is configured to flow to cool the preform such that the preform is inserted into the temperature adjustment part in a state where an outer surface temperature of the preform is higher than a glass transition temperature of a material constituting the preform by 30° C. or higher and 60° C. or lower.

Abstract: 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.

Abstract: A temperature adjustment device and a temperature adjustment method for a preform in a blow molding device with which it is possible to reduce a molding cycle time is provided. A temperature adjustment device for a preform in which a hollow rod member is inserted into an injection-molded, bottomed preform retained by a retention member, and a first air circulation path is formed between the preform and the hollow rod member to adjust the temperature of the preform. The temperature adjustment device is characterized in that a flow path adjustment member is fitted and attached to the outer periphery of the hollow rod member, whereby the cross-sectional area of the first air circulation path is partially adjusted and changed.

Abstract: A blow molding device in which a preform is injection-molded, the injection-molded preform is temperature-controlled by a temperature adjusting unit, and the temperature-adjusted preform is blow-molded, wherein the temperature adjusting unit has a multistage structure in which an uppermost stage has the highest temperature structure, and the mold surface temperatures of lower stages and other than the uppermost stage are set to be 10° C. or more lower than the glass transition temperature of the preform.

Abstract: A method of manufacturing a resin container having a flat cross-sectional shape includes a temperature adjusting step of preliminarily blowing a resin preform in a first mold to mold an intermediate molded body having a diameter larger than a diameter of a container short diameter side and adjusting a temperature of the intermediate molded body in the first mold, and a blow molding step of bringing the temperature-adjusted intermediate molded body into contact with a second mold to compress the intermediate molded body in a container short diameter direction, and then stretching and blow molding the intermediate molded body in the second mold to manufacture the resin container.