Manufacturing method for solid personal care product

Patent metadata

Field	Value
Publication number	US-2024358607-A1
Application number	US-202418768004-A
Country	US
Kind code	A1
Filing date	Jul 10, 2024
Priority date	Jun 15, 2022
Publication date	Oct 31, 2024
Grant date	—

Abstract

A manufacturing method for a solid personal care product having a three-dimensional pattern comprises a cutting process of cutting a solid base material provided on a target object such that the base material is not penetrated. In the cutting process, the base material can be cut such that a stepped portion can be formed, where the stepped portion can include a plurality of layered stairs each having a stair width in a height direction of 0.001 mm or more and 1 mm or less, and a difference in height between a topmost portion and a bottommost portion of a surface of the base material can be 1 mm or more.

First claim

1 . A manufacturing method for a solid personal care product having a three dimensional pattern, comprising:
a cutting process of cutting a solid base material provided on a target object such that the base material is not penetrated, wherein in the cutting process, the base material is cut such that a stepped portion is formed, the stepped portion including a plurality of layered stairs each having a stair width in a height direction of 0.001 mm or more and 1 mm or less, and a difference in height between a topmost portion and a bottommost portion of a surface of the base material is 1 mm or more.

2 . The manufacturing method for a solid personal care product according to claim 1 , wherein
in the cutting process, the base material is cut by relatively moving the target object and a cutting tool, which comes into contact with the base material to cut the base material.

3 . The manufacturing method for a solid personal care product according to claim 2 , wherein
in the cutting process, a first step of moving the cutting tool by a predetermined amount along the height direction and a second step of moving the cutting tool in a plane direction orthogonal to the height direction are alternately repeated to form the stepped portion.

4 . The manufacturing method for a solid personal care product according to claim 2 , wherein
the stepped portion includes a plurality of layer surfaces orthogonal to the height direction, and in the cutting process, the layer surfaces are sequentially formed from a higher position in the height direction.

5 . The manufacturing method for a solid personal care product according to claim 2 , wherein
a cut amount with respect to the base material in the height direction by the cutting tool is 0.001 mm or more and 1 mm or less, and a cut amount with respect to the base material in a plane direction orthogonal to the height direction by the cutting tool is 0.001 mm or more and 1 mm or less.

6 . The manufacturing method for a solid personal care product according to claim 2 , wherein
a cut amount with respect to the base material in the plane direction orthogonal to the height direction by the cutting tool is 0.8 mm or less, and a cut amount with respect to the base material in the plane direction orthogonal to the height direction by the cutting tool is 0.1 mm or more.

7 . The manufacturing method for a solid personal care product according to claim 2 , wherein
the cutting tool includes a rotary blade, and the rotary blade has a blade diameter of 0.1 mm or more and 5 mm or less.

8 . The manufacturing method for a solid personal care product according to claim 2 , wherein
the cutting tool includes a rotary blade, and the rotary blade has a blade diameter of 0.1 mm or more and 2 mm or less.

9 . The manufacturing method for a solid personal care product according to claim 2 , wherein
the cutting tool includes a rotary blade, and the rotary blade has a blade diameter of 2 mm or more and 5 mm or less.

10 . The manufacturing method for a solid personal care product according to claim 1 , wherein
the base material is provided with the three dimensional pattern such that at least a part of the surface of the base material cut in the cutting process is included in a surface of a final product.

11 . The manufacturing method for a solid personal care product according to claim 1 , wherein
the base material is a powder cosmetic pressed on the target object.

12 . The manufacturing method for a solid personal care product according to claim 11 , wherein
the base material is pressed such that a surface of the powder cosmetic exposed on the target object is a flat surface.

13 . The manufacturing method for a solid personal care product according to claim 1 , wherein
a cutter that performs the cutting process includes:
a stage on which the target object is placed,
a cutting tool that cuts the target object,
a driver that drives the cutting tool,
a support that supports the driver with respect to the stage, and
a cutting controller that controls an operation of the cutter.

14 . The manufacturing method for a solid personal care product according to claim 1 , wherein
the stair width in the height direction of one or more of the layered steps is restricted according to a first restriction range of 0.2 mm or less, and a stair width in a plane direction orthogonal to the height direction of each of said one or more layered steps is restricted according to a second restriction range of 0.001 mm or more and 1 mm or less.

15 . A solid personal care product having a three dimensional pattern, comprising:
a solid base material on which the three dimensional pattern is formed; and a stepped portion that is formed as the three dimensional pattern on the base material and includes a plurality of layered stairs each having a stair width in a height direction of 0.001 mm or more and 1 mm or less.

16 . The solid personal care product having a three dimensional pattern according to claim 15 , wherein
a difference in height between a topmost portion and a bottommost portion of a surface of the base material is 1 mm or more.

17 . The solid personal care product having a three dimensional pattern according to claim 15 , wherein
the base material has a hardness of 0.1 N or more and 100 N or less.

18 . The solid personal care product having a three dimensional pattern according to claim 15 , wherein
the base material includes powder, and the powder has a mean particle size of 0.01 μm or more and 1 mm or less.

19 . The solid personal care product having a three dimensional pattern according to claim 15 , wherein
the stair width in the height direction of one or more of the layered steps is restricted according to a first restriction range of 0.2 mm or less, and/or a stair width in a plane direction orthogonal to the height direction of each of said one or more layered steps is restricted according to a second restriction range of 0.001 mm or more and/or 1 mm or less.

20 . A solid personal care product having a three dimensional pattern, comprising:
a solid base material on which the three dimensional pattern is formed, wherein the three dimensional pattern has a stepped portion that is formed as the three dimensional pattern on the solid base material and that includes a plurality of layered stairs each having a stair width in a height direction of 0.001 mm or more and 1 mm or less, a difference in height between a topmost portion and a bottommost portion of a surface of the solid base material is 1 mm or more.

Assignees

• Kao Corp

Inventors

• Hirano Takahiro
• Natsui Shohei
• Motegi Tomoyuki

Classifications

• B23C5/10

  Shank-type cutters, i.e. with an integral shaft · CPC title

• A61K2800/10

  General cosmetic use · CPC title

• A45D2040/0012

  with special decorative arrangements or form · CPC title

• A61K2800/805

  Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95 · CPC title

• A45D40/00

  Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks (features common to containers for handling powdery or liquid toiletry or cosmetic substances A45D33/00-A45D37/00; cosmetic or like preparations A61K8/00, A61Q; sample tables or the like G09F5/00) · CPC title