Abstract: A method for producing a delamination container, wherein the delamination container includes an outer layer body constituting an outer shell of the container and an inner layer body that is laminated on an inner side of the outer layer body in a manner such that the inner layer body is peelable from the outer layer body. The inner layer body comprises an ethylene-vinyl alcohol copolymer resin, and is deformable to undergo volume reduction and the outer layer body includes an outer layer body's inside sub-layer that is located adjacent to the inner layer body and that is made of a polypropylene resin and an outer layer body's outside sub-layer that is located on an outer side of the container relative to the outer layer body's inside sub-layer and that is made of a polyethylene resin. The method comprises a process to form the delamination container by co-extruding resins in a molted state to prepare a cylindrical laminated parison and blow molding the prepared laminated parison.

Abstract: An application container includes a container main body, an inner plug, and a cap detachably mounted on a container body, the inner plug includes a holding cylinder section, and an application ball, the holding cylinder section has a holding cylinder main body, and a soft seal part, the soft seal part has an annular shape extending around a center axis and is elastically deformable, and the application ball is pushed downward by the cap and pushed into the soft seal part as the cap is mounted on the container body.

Abstract: A liquid-filled container manufacturing method including: the air discharge step of discharging air from an inside of a preform, by supplying a liquid at a level of pressure that does not cause stretching of the preform to the inside of the preform through an intra-tube channel formed between an inner peripheral surface of a spare supply tube extending through a blow nozzle and an outer peripheral surface of a spare supply rod provided radially inward thereof; and the liquid blow molding step of molding the preform into a container with a shape conforming to an inner surface of a mold, by stretching the preform downward using the spare supply rod and supplying a pressurized liquid to the inside of the preform through an intra-nozzle channel formed between an inner peripheral surface of the blow nozzle and the outer peripheral surface of the spare supply rod.

Abstract: A preform assembly includes: an outer preform that includes an outer mouth portion and a stretch portion connected to the outer mouth portion and in which a recess extending in a vertical direction is provided on an inner surface of the stretch portion; and an inner preform that includes an inner mouth portion and a stretch portion connected to the inner mouth portion, wherein an outside air introduction port communicating with a part between the outer preform and the inner preform is provided in a mouth portion composed of the outer mouth portion and the inner mouth portion located on an inner side of the outer mouth portion.

Abstract: A double container has an outer layer body and an inner layer body mainly made of a polyester resin and is formed by biaxial stretch blow molding, and includes: a mouth portion; a shoulder portion, gradually increasing in diameter in a downward direction, and having an outward protruding curved shape over a length in a vertical direction in a longitudinal section; a barrel portion; and a bottom portion, wherein the mouth portion has an outside air introduction port for introducing outside air between the outer layer body and the inner layer body, and the double container includes a shoulder rib that is concave or convex as seen from outside and at least extends from an upper end of the shoulder portion to the lower end of the shoulder portion.

Abstract: A trigger-type liquid sprayer includes a vertical supply tube, a reservoir cylinder into which a liquid that has passed through the inside of the vertical supply tube is supplied, and a reservoir plunger disposed inside the reservoir cylinder and configured to move toward one side in an axial direction in response to supply of a liquid into the reservoir cylinder while being biased toward the other side, and the vertical supply tube has a recovery path disposed in a rear end portion of the vertical supply tube, extending downward from the reservoir cylinder, and having a lower end portion closed from below, a communication path extending in a circumferential direction of the vertical supply tube from the recovery path, and a communication opening disposed in front of the recovery path and configured to allow the communication path and an inside of a container body to communicate with each other.

Abstract: The present invention relates to a bottle having a cylindrical shape with a bottom and formed of a synthetic resin material. In the bottle, a bottom portion includes a bottom wall portion, and a cylindrical heel portion. A plurality of recessed portions are provided in the bottom portion at equal intervals in a circumferential direction. A bottom surface of each of the plurality of recessed portions has a rectangular shape extending in the radial direction when viewed from below. When an interval in the circumferential direction between upper end portions located at the heel portion, among bottom surfaces of recessed portions adjacent to each other in the circumferential direction of the plurality of recessed potions, is defined as A, and a size in the circumferential direction of the upper end portions of the bottom surfaces of the recessed portions is defined as B, 1.0<A/B<3.2 is satisfied.

Abstract: A trigger-type liquid sprayer includes a sprayer main body mounted on a container body, and a nozzle member having a spray hole, the sprayer main body includes a vertical supply tube, a trigger mechanism having a trigger portion, a reservoir cylinder into which a liquid that has passed through the inside of the vertical supply tube is supplied in response to rearward movement of the trigger portion, and a reservoir plunger movably disposed inside the reservoir cylinder and configured to move toward one side in response to supply of the liquid into the reservoir cylinder while being biased toward the other side, and a displacement curbing portion is provided between a rear cylinder portion of the reservoir cylinder protruding rearward beyond the vertical supply tube and the vertical supply tube and configured to curb displacement of the rear cylinder portion with respect to the vertical supply tube.

Abstract: A preform assembly includes: an outer preform that includes an outer mouth portion and a stretch portion connected to the outer mouth portion and in which a recess extending in a vertical direction is provided on an inner surface of the stretch portion; and an inner preform that includes an inner mouth portion and a stretch portion connected to the inner mouth portion, wherein an outside air introduction port communicating with a part between the outer preform and the inner preform is provided in a mouth portion composed of the outer mouth portion and the inner mouth portion located on an inner side of the outer mouth portion.

Abstract: A blow molding apparatus including: a mold; a blow nozzle; a pressurized fluid supply unit; and a blow nozzle moving unit configured to cause a relative movement of the blow nozzle between a connected position and a standby position, wherein a preform is molded into a container by supplying a pressurized incompressible fluid into the preform. The blow molding apparatus includes: a drawing member including a drawing port; a drawing pump configured to be connected to the drawing member; and a drawing member moving unit configured to move the drawing member so that the drawing port is positioned below the blow nozzle, after the container has been molded and the blow nozzle has been moved from the connected position to the standby position.

Abstract: A double container pouring cap that can abut an air valve in an intended state and stably exhibit performance related to the air valve, and a double container includes: an air valve that can abut on and separate from a back surface of a cap body, and blocks air flow from a vent to an outside air inlet, while allowing air flow from the outside air inlet to the vent; and an inner plug provided to face the back surface of the cap body with the air valve interposed between, and including a regulation part that abuts on a part of the air valve and limits separation of the air valve from the back surface of the cap body. A first abutting surface of the air valve where the regulation part abuts is a flat surface.

Abstract: A container with separable laminated layers includes an outer layer body, an inner layer body separably laminated on an inner surface of the outer layer body and capable of undergoing volume reduction and deformation, and an ambient air inlet extending between the outer layer body and the inner layer body. The container has a bottle shape with a tubular mouth, a shoulder that is continuous with the mouth, a trunk that is continuous with the shoulder, and a bottom that is continuous with the trunk. The trunk includes a squeeze area. The squeeze area has a substantially polygonal tubular shape with three or more panel-shaped portions, and three or more corner portions that each connect adjacent panel-shaped portions.

Abstract: A synthetic resin-made laminated peelable container, formed by blow molding a preform assembly in which an inner preform is assembled into an outer preform, includes: an outer layer body including a tubular-shaped outer mouth and a closed-bottom tubular-shaped trunk contiguous from the outer mouth; an inner layer body including a tubular-shaped inner mouth arranged on inner side of the outer mouth and a containing chamber laminated on inner surface of the trunk in peelable manner for volume reduction and deformation; and an ambient air inlet configured to introduce ambient air between the outer and inner layer bodies. The containing chamber is integrally provided with at least two thick ribs extending along axis line of the trunk to increase thickness of the containing chamber compared with remaining portions.

Abstract: A synthetic resin-made container has an outer layer body and an inner layer body separably laminated on an inner surface of the outer layer body and is formed by stretch blow molding, and has: a tubular mouth portion; a shoulder portion located below the mouth portion and increasing in diameter downward; a barrel portion connected to and located below the shoulder portion; and a bottom portion closing a lower end of the barrel portion, wherein the mouth portion has an outside air introduction hole for introducing outside air into a space between the outer layer body and the inner layer body, and the inner layer body is made of a crystalline resin, and has, in at least a part of the mouth portion in the inner layer body, a crystallized region having a higher degree of crystallinity than other regions.

Abstract: A double-layered container including an inner and outer container. A mouth, body and bottom portion respectively extend from top to bottom along a bottle axis. An outside air introduction hole is provided. A diameter of an intermediate portion between an upper and lower end of the body portion is smaller than a diameter of the lower end portion. The intermediate and lower end portions are connected via a step portion. A bottom wall portion includes a ground contact portion and depressed portion. A distance of the outer container inner surface from a connection portion to an outer peripheral edge portion of the ground contact portion in a vertical cross-sectional view along the bottle axis is 1.15 times or less a distance along the outer container inner surface and the bottle axis to an inner peripheral edge portion of the ground contact portion in the vertical cross-sectional view.

Abstract: A preform for molding a dual container, in which an inner preform is inserted into an outer preform in a state in which a mouth portion of the inner preform is fitted into a mouth portion of an outer preform, the inner preform is formed of a crystalline resin, a crystallized region is provided in at least a portion of the inner preform, the crystallized region having a degree of crystallization greater than that of the other portion, the portion of the inner preform adjacent to the mouth portion from below the mouth portion and located below the outside air introduction hole, a step portion facing upward and a rib extending upward from the step portion are formed on an inner circumferential surface of the inner preform, and at least a part of the rib is adjacent to the crystallized region from above the crystallized region.

Abstract: A double container includes an inner container and an outer container, has a mouth portion, a body portion and a bottom portion disposed in this order from top to bottom along a direction of a bottle axis, and includes an outside air introduction hole. The bottom wall portion of the bottom portion includes a ground contact portion and a recessed portion. A peripheral wall portion of the depressed portion extends inward in a radial direction as it goes upward. A plurality of ridge portions protruding radially inward are provided on the peripheral wall portion of the depressed portion at intervals in a circumferential direction. The peripheral wall portion of the depressed portion or the ridge portion extends inward in the radial direction via a step portion as it goes upward.

Abstract: A cap configured to be detachably attached to a mouth portion of a container body having a containment space for contents and close the mouth portion, includes: a transparent or semitransparent topped tubular outer lid portion; and a topped tubular inner lid portion located in close contact with an inner side of the outer lid portion so as to be relatively non-rotatable. A retaining protrusion having an inclined surface that is inclined inward in a downward direction and extends to a lower end of the outer lid portion is provided on an inner peripheral surface of the outer lid portion. The retaining protrusion engages with a retaining depression provided on an outer peripheral surface of the inner lid portion, to suppress separation between the outer lid portion and the inner lid portion.

Abstract: A decompression absorption bottle is formed of a synthetic resin material and has a cylindrical shape with a bottom. A bottom wall part of a bottom part includes a ground contact part; an upright peripheral wall part; and an annular movable wall part, the movable wall part is disposed to be freely rotatable in a vertical direction, the movable wall part is provided with an annular recess, and the annular recess is configured that an inner corner part having a V-shape or a U-shape protruding inward in the radial direction of the bottle when viewed from below, and an outer corner part having a V-shape or U-shape protruding outward in the radial direction of the bottle are alternately continued to each other in the circumferential direction of the bottle.

Abstract: A container production method by liquid blow molding has a liquid blow molding step of supplying a pressurized liquid into a preform disposed in a metal mold to mold the preform into a container having a trunk that has a flat shape in a plan view and holds the liquid; and a transferring step of taking the container out from the mold and transferring the container in an approximate short axis direction of the trunk.