公开(公告)号：US20220134386A1

公开(公告)日：2022-05-05

申请号：US17433843

申请日：2020-02-25

Applicant: Kao Corporation

Inventor： Takehiko TOJO ,  Takehiko UEMATSU ,  Masahiko SUZUKI

IPC: B08B1/00 ,  D01D5/04 ,  D04H1/4382 ,  D04H1/728

Abstract: A cleaning member includes a nonwoven structure whose shape is retained by entanglement between single fibers having a median fiber diameter of from 100 to 2000 nm. The nonwoven structure has an apparent density of from 0.05 to 0.60 g/cm3. Preferably, the cleaning member may further include a support, and the support and the nonwoven structure may be arranged in contact with one another. Preferably, the single fiber may be an electrospun fiber. A method for manufacturing a cleaning member includes: a step of performing spinning by electrospinning, and thereby forming a deposit of a single fiber; and a step of pressing the deposit, and thereby forming a nonwoven structure having an apparent density of from 0.05 to 0.60 g/cm3.

公开(公告)号：US20220287923A1

公开(公告)日：2022-09-15

申请号：US17633499

申请日：2021-02-05

Applicant: KAO CORPORATION

Inventor： Naomi AMARI ,  Takuji KUME ,  Makoto ONOO ,  Takehiko TOJO ,  Rui TAKAHASHI

IPC: A61K8/02 ,  A61K47/32 ,  A61K47/36 ,  A61K9/00 ,  A61K8/04 ,  A61K8/49 ,  A61K8/63 ,  A61K8/68 ,  A61K8/73 ,  A61K8/81

Abstract: Provided is a liquid skin external composition which allows a poorly water-soluble component to be applied to a skin in a liquid state.
An assembly of fiber for use in production of a liquid skin external composition, the assembly of fiber comprising (a) a polymer soluble in water and an alcohol or a ketone in a content of 50 mass % or more and 98 mass % or less with respect to the whole assembly of fiber and (b) a poorly water-soluble component in a content of 2 mass % or more and 40 mass % or less with respect to the whole assembly of fiber.

公开(公告)号：US20210355605A1

公开(公告)日：2021-11-18

申请号：US17286264

申请日：2019-10-16

Applicant: KAO CORPORATION

Inventor： Shinji KODAMA ,  Susumu FUJINAMI ,  Haruomi ENOMOTO ,  Takahiro HIRANO ,  Takehiko TOJO

IPC: D01D5/00

Abstract: An electrostatic spinning device including a nozzle that sprays spinning liquid that has been charged; a switch that controls spray operation of the spinning liquid; and a housing that includes a bulging portion and a grip portion for grip of the user, the bulging portion bulging outward from a virtual line connecting a tip of the nozzle and an end of the switch on a side of the nozzle, an angle formed by an axis of the nozzle and an axis of the grip portion being 45 degrees or more.

公开(公告)号：US20220372658A1

公开(公告)日：2022-11-24

申请号：US17772472

申请日：2020-10-26

Applicant: Kao Corporation

Inventor： Tomonari OKADA ,  Masayuki UCHIYAMA ,  Naomi AMARI ,  Yuko WAKAHARA ,  Takehiko TOJO ,  Hideo KOBAYASHI

IPC: D01D5/00 ,  D01D5/04 ,  D01D7/00 ,  D04H1/728 ,  A61Q19/00 ,  A45D44/22

Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in its interior, an electroconductive section. Preferably, the fiber collection tool further includes a surface section outside the electroconductive section. In a fiber deposit production method, a user collects, with the fiber collection tool, a fiber spun by the user by performing electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

公开(公告)号：US20220024172A1

公开(公告)日：2022-01-27

申请号：US17296881

申请日：2019-11-25

Applicant: Kao Corporation

Inventor： Suguru IKEYAMA ,  Hideo KOBAYASHI ,  Takehiko TOJO ,  Koji SAITO ,  Yuting YANG ,  Shunetsu YONAIYAMA ,  Ikuo FUKUDA

IPC: B32B3/26 ,  B32B5/02 ,  D01D5/04 ,  D04H1/4374 ,  D04H1/728

Abstract: A nanofiber sheet includes: a substrate layer; and a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound. A peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 μm. The nanofiber layer includes a gradation region having a thickness that gradually increases inward from the peripheral edge. The distance W1 between the peripheral edge of the nanofiber layer and a maximum thickness portion where the thickness becomes the greatest in the gradation region is at least 3 mm. A nanofiber sheet manufacturing method involves depositing nanofibers onto a collecting unit by moving at least either a nozzle or the collecting unit, to thereby manufacture a predetermined nanofiber sheet including a gradation region.

公开(公告)号：US20160168755A1

公开(公告)日：2016-06-16

申请号：US14910356

申请日：2014-08-07

Applicant: KAO CORPORATION

Inventor： Koji TOYODA ,  Shinji KODAMA ,  Takehiko TOJO ,  Kenji IWANE ,  Tomohiro ONDA

IPC: D01D5/00 ,  C08B37/00

CPC classification number: D01D5/0069 ,  C08B37/0018 ,  D04H1/728

Abstract: A nanofiber producing apparatus 10 includes a spinning solution jetting means 11 having a conductive nozzle 13 for jetting a stock spinning solution for nanofiber production, an electrode 14 located away from the nozzle 13, a voltage generating means 101 generating a voltage between the nozzle 13 and the electrode 14, an air jetting means 15 located at such a position as to direct an air jet between the nozzle 13 and the electrode 14, and a nanofiber collecting means. The voltage generating means 101 generates a voltage so that the nozzle 13 serves as a positive pole and the electrode 14 as a negative pole. The electrode 14 is covered, on almost the entire area of its side facing the nozzle 13, with a covering 17 having a dielectric exposed on the surface thereof. The dielectric exposed on the surface of the covering has a thickness of 0.8 mm or greater.

Abstract translation: 纳米纤维制造装置10具有纺丝溶液喷射装置11，其具有用于喷射用于纳米纤维生产的原纺丝溶液的导电喷嘴13，位于远离喷嘴13的电极14;电压产生装置101，其在喷嘴13和 电极14，位于喷嘴13和电极14之间的空气射流的位置的空气喷射装置15和纳米纤维收集装置。 电压产生装置101产生电压，使得喷嘴13用作正极，电极14用作负极。 电极14在其面向喷嘴13的一侧的几乎整个区域上被覆盖在其表面上的电介质17。 暴露在覆盖物表面上的电介质的厚度为0.8mm以上。

公开(公告)号：US20230228001A1

公开(公告)日：2023-07-20

申请号：US18011213

申请日：2021-06-14

Applicant: Kao Corporation

Inventor： Yuta ABE ,  Takatoshi NIITSU ,  Takehiko TOJO

IPC: D01D5/00 ,  D04H1/728 ,  D01D5/14 ,  D04H1/4382 ,  D04H1/732 ,  D04H1/4291

CPC classification number: D01D5/0092 ,  D01D5/0038 ,  D04H1/728 ,  D01D5/14 ,  D04H1/43835 ,  D04H1/732 ,  D01D5/0023 ,  D04H1/4291 ,  D10B2321/022

Abstract: An electrospinning device includes: a plurality of nozzles that discharge a spinning solution containing a resin; and a plurality of power sources for applying charge to the solution. The power sources are connected such that different charges are applied to the solutions discharged from the nozzles, respectively. The fiber sheet is a long fiber nonwoven fabric including first fibers and second fibers that are different from the first fibers. In a histogram based on fiber diameter distributions and frequencies of the numbers of fibers, the fiber sheet has a peak where a ratio P1 of a frequency of the number of fibers of the first fibers to a frequency of the number of fibers of the second fibers is 0.01 or more and 100 or less. Alternatively, the fiber sheet has two or more peaks in the histogram, in which a ratio P2 of a frequency of the number of fibers of the first fibers at a highest peak in a range of a fiber diameter of 3 μm or less to a frequency of the number of fibers of the second fibers at a highest peak in a range of a fiber diameter of more than 3 μm is 1 or more and 1 000 or less.

公开(公告)号：US20220372662A1

公开(公告)日：2022-11-24

申请号：US17772480

申请日：2020-10-26

Applicant: Kao Corporation

Inventor： Naomi AMARI ,  Masayuki UCHIYAMA ,  Yuko WAKAHARA ,  Tomonari OKADA ,  Takehiko TOJO ,  Hideo KOBAYASHI

IPC: D01D7/00 ,  D01D5/00

Abstract: A fiber collection tool for collecting a fiber spun by electrospinning is described. The fiber collection tool has a size holdable by the hand of a user, and includes, in at least a portion of the surface thereof, an electroconductive section having a surface electrical resistivity of 1011 Ω/cm2 or less, or a hydrophilic section having a water contact angle of preferably from 15° to 90° at 25° C. A user collects, with the fiber collection tool, a fiber spun by the user by electrospinning using an electrospinning device having a size holdable by the hand of the user, and thereby produces a film including a deposit of the fiber on a surface of the fiber collection tool. The fiber collection tool, having the deposit formed thereon, is pressed against a surface of an object, and the deposit is transferred onto the surface of the object, to form a film including the fiber deposit on the surface of the object.

公开(公告)号：US20220022617A1

公开(公告)日：2022-01-27

申请号：US17297187

申请日：2020-01-22

Applicant: KAO CORPORATION

Inventor： Jens HEILMANN ,  Takehiko TOJO ,  Nicole ARNOLD

IPC: A45D7/00 ,  A45D2/14

Abstract: A hair treatment method for curling a lock of hair using a hair holder is provided. The hair holder includes a tubular body into which a lock of hair can be inserted from an opening at a first end of the tubular body toward an opening at a second end thereof, and the tubular body is configured to be capable of being rolled up. The hair treatment method includes inserting a lock of hair into the hair holder, rolling up the tubular body together with the lock of hair inserted in the tubular body so that a large diameter portion that has a tubular shape and forms an outer circumferential portion and a small diameter portion that is located inside the large diameter portion and has a space between the small diameter portion and the large diameter portion are formed, and performing curling while maintaining this wound state.

公开(公告)号：US20230270632A1

公开(公告)日：2023-08-31

申请号：US18247572

申请日：2021-09-29

Applicant: Kao Corporation

Inventor： Ryota SHIIBA ,  Miyuki SUDO ,  Takehiko TOJO ,  Takashi FUKUI

IPC: A61K8/02 ,  A61Q17/04 ,  G01J1/50

CPC classification number: A61K8/0208 ,  A61Q17/04 ,  G01J1/50 ,  A61K2800/45

Abstract: A skin-attaching sheet including an attaching portion configured for attaching to skin. The attaching portion includes a color-changeable layer that changes color following exposure to ultraviolet rays, and the attaching portion has a color difference (ΔE*ab) in an L*a*b* color system between before exposure and 10 seconds after exposure of 5 or more and 300 or less in a standard exposure test in which the attaching portion is exposed to ultraviolet rays in a moist state.