Patents Assigned to Yoshino Kogyosho Co., Ltd.
  • Patent number: 11123912
    Abstract: By coating an inner surface of a preform, in which at least an inner surface is made of polyester and which has transparency, with a coating layer, which has elongation capacity and water insolubility, the inner surface of the preform is protected against a pressurized liquid by the coating layer when the pressurized liquid is supplied to the preform, and occurrence of cloudiness on an inner surface of a container after molding is prevented even in a case where a liquid having properties of eroding polyester and causing cloudiness on a polyester surface is used as the pressurized liquid during liquid blow molding.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: September 21, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Yuichi Okuyama
  • Publication number: 20210269193
    Abstract: A delamination container formed by blow molding a preform assembly includes: an outer layer body including a tubular outer mouth portion and a bottomed tubular barrel portion; an inner layer body including a tubular inner mouth portion fixed to an inner side of the outer mouth portion, and a containing portion separably laminated on an inner surface of the barrel portion and capable of volume-reduction deformation; an outside air introduction port; and a plurality of protrusions integrally provided in an upper end part of the barrel portion at intervals in a circumferential direction centering on an axial center of the outer mouth portion, the plurality of protrusions each projecting from an outer surface of the barrel portion and being recessed with respect to the inner surface of the barrel portion.
    Type: Application
    Filed: March 1, 2021
    Publication date: September 2, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Tadayori NAKAYAMA
  • Patent number: 11097871
    Abstract: A synthetic resin container includes a mouth portion and body, the body being squeezed to discharge contents. The body has a flattened shape with a width larger than a thickness. An end on one side in an axial direction along a center axis line of the body is connected to the mouth portion, and an end on another side is closed and formed in a curved shape protruding toward the other side in the axial direction. Each widthwise ends of the body is provided with a bent portion extending in parallel with the axial direction. When the body is squeezed in the thickness direction to discharge the contents, the bent portion is configured to be a starting point when one of a front side wall and a rear side wall opposed to each other in the thickness direction of the body is inverted and deformed toward the other.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: August 24, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Naoki Tsuda
  • Publication number: 20210245930
    Abstract: Proposed is a tube container in which generation of scratches on a surface of the container can be prevented. The present tube container includes a tube body that defines a container space for contents and that has a laminated structure. The tube body includes: a cylindrical laminated sheet in which both edges of the sheet are butted together; and a reinforcing tape portion provided on an inner surface of the laminated sheet. The laminate sheet includes a high hardness protective layer constituting an outermost layer, an outer polyethylene-based resin layer formed on an inner side of the high hardness protective layer, and an inner polyethylene-based resin layer constituting an innermost layer, and the high hardness protective layer has a pencil hardness of 3B or greater than 3B. The reinforcing tape portion includes a polyethylene-based resin layer as an outermost layer abutting against the inner surface of the laminate sheet.
    Type: Application
    Filed: June 19, 2019
    Publication date: August 12, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Kazuhiro HASHIMOTO, Takashi MIYA
  • Patent number: 11077601
    Abstract: A liquid-containing container manufacturing method includes: an air discharge step of discharging air inside a preform, by opening a preliminary supply path by an opening-closing body in a state in which a seal body is at a closed position to supply a liquid into the preform; and a liquid blow molding step of molding the preform into a liquid-containing container, by moving the seal body from the closed position to a open position to supply the liquid pressurized into the preform through a seat part.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: August 3, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Yuichi Okuyama, Mitsuru Shiokawa, Shigeki Morikami
  • Patent number: 11077455
    Abstract: A trigger-type liquid sprayer in which a spring member urging an operation lever is less likely to be fatigued. A trigger-type liquid sprayer includes a sprayer main body attached to a container, an operation lever held to be swingable in a front-back direction with respect to the sprayer main body, and a spring member urging the operation lever forward. The spring member includes a fixed part that is located in front of a swing center of the operation lever and is fixed and held to the sprayer main body, and a projection that is located below the fixed part. The operation lever includes an inclined surface that is inclined upward from downward and frontward from backward and is urged by the projection abutting against the inclined surface.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: August 3, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Kotaro Fujiwara, Kazuhisa Yoshimura
  • Patent number: 11072450
    Abstract: A laminated bottle formed in a cylindrical shape with a bottom includes: an outer layer; and a flexible inner laminated onto an inner surface of the outer layer and being separable from the inner surface. A bottom section of the outer layer positioned at a bottle bottom portion is provided with: an intake slit allowing outside air to be imported into a space between the outer layer and the inner layer, and a projecting part projecting inward of the laminated bottle. At least part of the projecting part extends in a cross direction crossing a direction in which the intake slit extends, and the projecting part is arranged next to the intake slit in the cross direction.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: July 27, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Mitsuo Furusawa, Takayuki Abe
  • Patent number: 11059636
    Abstract: A discharge container includes: a double-walled container body including an inner layer body and an outer layer body; a discharge cap having a discharge outlet, the discharge cap being attached to a mouth of the double-walled container body; and a check valve structure. The check valve structure has a tubular partition wall defining a flow path of the content and a valve body which is provided on the partition wall with a hinge portion and has a single swing structure, and space inside the partition wall rather on the discharge outlet side than on the valve body side serves as a liquid reservoir space where part of remaining content is stored after the discharge of the content.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: July 13, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Shinya Maeda
  • Patent number: 11059215
    Abstract: A liquid-containing container manufacturing method includes: a liquid blow molding step of, in a state in which a reversal panel formation part forms a convex surface projecting toward inside of a cavity, supplying a pressurized liquid into a preform placed inside a cavity, to mold the preform into a container including a reversal panel; and a headspace formation step of pressing the container by a press part to reverse the reversal panel, and thereafter releasing press by the press part to increase a volume of the container and thereby form a headspace.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: July 13, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Toshimasa Tanaka
  • Publication number: 20210197996
    Abstract: According to the present invention, there is provided a bottle formed of a synthetic resin material in a cylindrical shape with a bottom, the bottle includes a bottom portion which includes a bottom wall portion and a heel portion, in which the bottom wall portion includes an inner peripheral wall portion and a depressed wall portion, a plurality of concave portions are formed on the inner peripheral wall portion, the plurality of concave portions are located on the inner peripheral wall portion at least in a portion including a lower end edge of the inner peripheral wall portion, a plurality of convex portions are formed at a connecting portion between the inner peripheral wall portion and the depressed wall portion, and the plurality of concave portions and the plurality of convex portions are provided alternately in the circumferential direction.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Tadayori NAKAYAMA
  • Patent number: 11045821
    Abstract: A trigger type liquid ejector includes an ejector main body having a vertical supply pipe, an ejection barrel, a trigger mechanism having a main piston and a main cylinder, a reservoir cylinder, a reservoir plunger, a first check valve configured to block communication between a container body and the vertical supply pipe when the main cylinder is pressurized and allow communication when the main cylinder is decompressed, and a second check valve configured to allow communication between an ejection hole and the vertical supply pipe when the main cylinder is pressurized and block communication when the main cylinder is decompressed, and a communication path is provided between the main piston and the main cylinder and is configured to bring the main cylinder in communication with the container body when the main piston is moved to a position deviated rearward from a frontmost position.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 29, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Yoshiyuki Kakuta
  • Patent number: 11045992
    Abstract: A liquid blow molding method includes: a preliminary pressurizing step of operating a pressure feeding source to preliminary pressurize a liquid between the pressure feeding source and a blow nozzle; an operating condition setting step of setting an operating condition of the pressure feeding source on the basis of data acquired by the preliminary pressurizing step; a blow molding step of liquid blow molding a preform into a container of a predetermined shape; and a suck-back step of operating the pressure feeding source in a reverse direction on the operating condition set in the operating condition setting step to suck back the liquid from inside of the container molded into a predetermined shape in the blow molding step toward inside of the blow nozzle.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: June 29, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Yuichi Okuyama, Kenichi Suyama
  • Publication number: 20210188525
    Abstract: A dispenser for aerosol containers includes: a nozzle; and a cover including an operating portion. One of the operating portion and the nozzle includes a sliding portion capable of depressing the nozzle to a predetermined depression position together with a plurality of stems while sliding on a slid portion provided at an other one of the operating portion and the nozzle to a termination, with a depression operation on the operating portion. A vibration generation portion that generates vibration as a result of entry of the sliding portion is provided at the termination of the slid portion.
    Type: Application
    Filed: September 3, 2018
    Publication date: June 24, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Mitsuo FURUSAWA
  • Publication number: 20210188474
    Abstract: A double container includes: an outer layer body including an outer mouth portion and a barrel portion; an inner layer body including an inner mouth portion and a containing portion; an outside air introduction port for introducing outside air; and a plurality of vertical ribs arranged with spacing in a circumferential direction on an inner surface of the outer layer body or an outer surface of the inner layer body, and each extending over the outer mouth portion to the shoulder portion or extending over the inner mouth portion to the containing portion, wherein at least one of the plurality of vertical ribs faces the outside air introduction port.
    Type: Application
    Filed: August 10, 2018
    Publication date: June 24, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Masato SUZUKI, Junichi CHIBA, Masaaki SASAKI
  • Patent number: 11040803
    Abstract: The laminated tube container has a tube body that includes a light blocking layer between an innermost layer and an outermost layer made of resin. The tube body has a butted portion in which both side edges of a laminated sheet constituting the tube body butt against each other and a reinforcing tape portion provided on an inner surface of the tube body along the butted portion. The reinforcing tape portion has a pair of resin layers and an intermediate layer that includes an aluminum layer and is disposed between the pair of resin layers.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 22, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Kazuhiro Hashimoto
  • Publication number: 20210178652
    Abstract: A liquid container manufacturing method includes: a liquid blow molding step of molding a preform into a liquid container having a shape conforming to an inner surface of a blow-molding mold, by supplying a pressurized liquid to an interior of the preform through a supply path in a state where a blow nozzle is engaged to a mouth of the preform; and a headspace forming step of forming a headspace in the liquid container, by discharging the liquid from an interior of the liquid container through a discharge port in a discharge rod extending to the interior of the liquid container through the blow nozzle, by introducing a pressurized gas to the interior of the liquid container through a gas inflow path in a state where the supply path is closed.
    Type: Application
    Filed: June 25, 2019
    Publication date: June 17, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Hideaki HOSHINO, Mitsuru SHIOKAWA
  • Publication number: 20210178651
    Abstract: A liquid blow molding method of molding a liquid container containing a content liquid from a preform, includes a nozzle engagement step of engaging a blow nozzle with a mouth portion of the preform; a molding step of molding the preform into a container of a predetermined shape by supplying a pressurized liquid into the preform; a suck-back step of sucking back a predetermined amount of liquid from the inside of the container to a supply channel by operating a pump in a reverse direction with the container put in the upside-down posture while the blow nozzle is engaged with the mouth portion; and a nozzle separation step of separating the blow nozzle from the mouth portion with the container put in the upright posture.
    Type: Application
    Filed: October 3, 2018
    Publication date: June 17, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Mitsuru SHIOKAWA, Yuichi OKUYAMA
  • Publication number: 20210154907
    Abstract: A method of manufacturing a liquid container in which a liquid is stored in a storage space of the container including a mouth, a body and a bottom, the body having a lateral folding line portion being foldable when the body is flattened in a thickness direction and extending in a circumferential direction of the body, the method including a liquid blow molding step of molding a container filled full with a liquid in a storage space by placing a preform in a mold and performing liquid blow molding; and a headspace forming step of forming a headspace in which, by separating the container filled with a liquid from the container, the body is deformed in a direction in which a thickness is increased in an area of the lateral folding line portion and a volume of the storage space is increased.
    Type: Application
    Filed: May 7, 2018
    Publication date: May 27, 2021
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventor: Toshimasa TANAKA
  • Patent number: 11014281
    Abstract: A liquid blow molding method molds a bottomed tubular-shaped preform into a liquid containing container. The method includes a nozzle engaging step of engaging a blow nozzle with a mouth of the preform; a molding step of molding the preform into a container of a predetermined shape by supplying a pressurized liquid from a pump into the preform; a suck-back step of sucking back a predetermined volume of liquid out of the container into a supply path; a nozzle closing step of closing the blow nozzle by a sealing body; and a discharge step of discharging a liquid in the supply path by a predetermined volume from a discharge port by operating, after the nozzle closing step, a pump in a positive direction with the discharge port connected to the supply path opened.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: May 25, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Masato Suzuki, Mitsuru Shiokawa
  • Patent number: 11008155
    Abstract: A double container includes an outer layer body constituting an outer shell; an inner layer body including an upper opening communicating with a containing space, accommodated in the outer layer body, and deformable to undergo volume reduction; an inside plug including a tubular wall extending toward the containing space, a spherical body serving as a valve body being disposed inside the tubular wall; and a dispensing plug fitted to a mouth portion of the outer layer body and including a dispensing tube connected to the tubular wall. The tubular wall includes an inclined wall having a diameter decreasing toward the containing space and configured to abut against the spherical body over an entire circumference and including a protruding wall protruding from the inclined wall to the containing space. The protruding wall includes a liquid holding member holding a pool of liquid medium of the content formed below the spherical body.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 18, 2021
    Assignee: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Takayuki Abe, Mitsuo Furusawa