IPC分类号：
A43B1/02 | A43B23/02 | A43D3/02 | A43D3/04 | A43D3/14 | B33Y80/00 | A43D1/02
国民经济行业分类号：
C1954 | C1953 | C1952 | C1951 | C2444 | C1761 | O8192 | C1959
当前申请(专利权)人：
ASICS CORPORATION
原始申请(专利权)人：
ASICS CORPORATION
当前申请(专利权)人地址：
1-1, Minatojima-Nakamachi 7-chome Chuo-ku, Kobe-shi, Hyogo, JP
发明人：
BESSHO, AYU | ABE, SATORU | TANIGUCHI, NORIHIKO | KOZUKA, YUYA
代理机构：
STOLMÁR & PARTNER PATENTANWÄLTE PARTG MBB
摘要：
An object of the present invention is to provide a recyclable last, a method for producing the last, and a method for producing a shoe upper. Provided is a last for shaping a shoe upper. The last includes at least an outer peripheral portion composed of a plastic material that is reversibly transformed between a solid state where the plastic material has a certain shape when the shoe upper is shaped, and a plasticized state where the plastic material has fluidity and is thereby deformable.
技术问题语段：
The technical problem in this patent text is to find a solution for recycling lasts that are no longer used in the production of custom-made shoes, as they are typically exclusive to the user.
技术功效语段：
This patent is about a method for making a shoe upper by using a last. The invention provides a last that can help to shape the shoe upper, and a method for making the last. This method can help to produce a shoe upper that fits better and is more comfortable. The technical effect of this invention is to improve the quality and comfort of shoes.
权利要求：
1. A last (1) for shaping a shoe upper (2), the last (1) comprising: a central part (12) formed in advance as a core and constantly held in the solid state; and a peripheral part (13) that is formed on an outer peripheral portion of the central part (12) and that is formed of a plastic material, wherein a portion of the last coming into contact with the shoe upper (2) when the shoe upper is shaped is composed of the plastic material, wherein the plastic material is reversibly transformable between a solid state where the plastic material has a certain shape when the shoe upper (2) is shaped, and a plasticized state where the plastic material has fluidity and is thereby deformable, wherein the plastic material comprises a pulp aggregate in which a plurality of pulp materials are aggregated, and a shaping material for solidifying the pulp aggregate into the certain shape, and the shaping material is configured to be dissolved from the solid state to thereby cause the plastic material to have fluidity, wherein the shaping material is water-soluble.
2. The last (1) according to claim 1, wherein the last (1) is formed of the pulp aggregate layered in an inward and outward direction with reference to a foot of a shoe wearer.
3. The last (1) according to claim 1 or 2, wherein the central part (12) is hollow inside thereof.
4. The last (1) according to any one of claims 1 to 3, wherein the central part (12) is formed of a material having a higher heat conductivity than that of the peripheral part (13).
5. The last (1) according to any one of claims 1 to 4, comprising: a body (11) comprising the plastic material; and a protective part (14) covering an outer periphery of the body (11).
6. The last (1) according to claim 5, wherein the protective part (14) is capable of being removed from the body (11).
7. A method for producing a last (1) for shaping a shoe upper (2) according to any one of claims 1 to 6, the method comprising: forming the last (1) by layering a pulp aggregate in which a plurality of pulp materials are aggregated, in an inward and outward direction with reference to a foot of a shoe wearer, by 3D printing, wherein the last (1) comprises: a central part (12) formed in advance as a core; and a peripheral part (13) that is formed on an outer peripheral portion of the central part (12), so that a portion to be formed by the 3D printing is limited to the peripheral part (13).
8. The method for producing the last (1) according to claim 7, comprising: a data acquiring step of acquiring a user's foot shape data; a data generating step of generating 3D printing data from the user's foot shape data; and a last forming step of layering the pulp aggregate based on the 3D printing data.
9. The method for producing the last (1) according to claim 8, comprising: creating the 3D printing data based on the user's foot shape data individually generated for each of a plurality of users.
10. The method for producing the last (1) according to claim 9, comprising: generating the user's foot shape data from image data obtained by capturing an image of the user's foot.
11. A method for producing a shoe upper (2), the method comprising: a first shaping step of placing an unshaped upper (2A) on the last (1) according to any one of claims 1 to 6, the unshaped upper (2A) composed of a fiber sheet comprising heat-shrinkable yarns; and a second shaping step of shaping the unshaped upper (2A) in conformity with the shape of the last by heating to obtain a shaped upper (2).