YOSHINO KOGYOSHO CO., LTD.

The present invention is a cap which includes an inner cap ( 11 ) and an outer cap ( 12 ), in which the inner cap ( 11 ) is formed in a topped cylindrical shape in which it has an inner peripheral wall ( 21 ) and an inner top wall ( 22 ), the outer cap ( 12 ) is formed in a topped cylindrical shape in which it has an outer peripheral wall ( 23 ) and an outer top wall ( 24 ), the outer peripheral wall ( 23 ) includes an inner cylinder ( 25 ) and an outer cylinder ( 26 ), a plurality of elastic projection pieces ( 27 ) are provided at intervals in a circumferential direction at a lower end opening edge of the inner cylinder ( 25 ), and the plurality of elastic projection pieces ( 27 ) include first elastic projection pieces ( 27 A) in which support protrusions ( 28 ) are formed at lower ends.

A preform for forming a double container configured to form a double container including an inner container and an outer container. The preform includes a bottomed cylindrical inner preform configured to form the inner container and a bottomed cylindrical outer preform configured to form the outer container. The inner preform is inserted into the outer preform, a longitudinal groove is formed in an inner peripheral surface of a mouth portion of the outer preform, an outside air introduction hole opens in a longitudinal groove, and a flange portion is provided in a mouth portion of the inner preform.

A trigger-type liquid sprayer including a sprayer body mounted on a container body, a nozzle member having a spray hole, and an invertible adapter. The sprayer body includes a longitudinal supply cylinder part, a trigger mechanism having a trigger part, a storage cylinder, and a storage plunger. The invertible adapter includes an adapter main body configured to form a first and second space, the first space configured to bring the container body in communication with an inside of the longitudinal supply cylinder part through an upright introduction port, and the second space configured to bring an inside of the container body in communication with the first space through an inverted introduction port, and a changeover valve configured to block communication between the first and second spaces when the container body is upright and bring the first and second spaces in communication with each other when the container body is inverted.

A liquid filling apparatus that fills a filled object with a liquid, the liquid filling apparatus includes: a liquid supply portion; a nozzle that includes a supply port and a sealing surface; a driving rod arranged inside a liquid supply channel so as to be freely movable in a vertical direction; and a sealing member fixed to the driving rod, wherein a gap is provided between a support surface of the driving rod and a facing surface of the sealing member.

The present invention provides a bottle with a handle in which a handle is attached to a body portion of a bottle having a center axis line extending in an upward-downward direction. The handle includes a fixed portion, a holding portion, an upper joint portion, and a lower joint portion. The holding portion is formed in a plate shape, front and rear surfaces of the holding portion being directed in a forward-rearward direction. The holding portion is curved so as to exhibit a curved shape projecting forward in a vertical cross-sectional view in the upward-downward direction and exhibit a curved shape projecting forward in a cross-sectional view orthogonal to the upward-downward direction.

A method of injection molding a test tube-shaped preform for biaxial stretch blow molding includes supplying a major material resin from outer and inner flow paths to a combined flow path for a predetermined time and rate. For a period of time within a range of the predetermined time period during which the major material resin is supplied, the intermediate layer resin is simultaneously supplied from the middle flow path to the combined flow path at a second predetermined supplying rate. A columnar laminated molten resin is injected into a cavity of a metal mold connected to a tip of the nozzle through a gate to fill the cavity, the columnar laminated molten resin being composed of the major material resin and the intermediate layer resin formed in the major material resin in a laminated manner that are combined into a columnar shape at the combined flow path.

A liquid filling apparatus that fills a filled object with a liquid, the liquid filling apparatus includes: a liquid supply portion; a nozzle that includes a supply port and a sealing surface; a driving rod arranged inside a liquid supply channel so as to be freely movable in a vertical direction; and a sealing member fixed to the driving rod, wherein a gap is provided between a support surface of the driving rod and a facing surface of the sealing member.

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.

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.

A trigger-type liquid ejector including an ejector main body and a nozzle member. The ejector main body includes: a longitudinal supply tube portion; a trigger mechanism including a trigger portion; a reservoir cylinder; a reservoir plunger; and a reservoir valve. The longitudinal supply tube portion includes an outer tube and an inner tube. A recovery passage is provided between the outer tube and the inner tube. The reservoir valve is provided in the inner tube and configured to allow supply of a liquid from the longitudinal supply tube portion into the reservoir cylinder by being elastically deformed in the vertical direction.