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 650-8555,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 of this patent is how to recycle lasts that are no longer used in the production of custom-made shoes.
技术功效语段：
The present invention provides a recyclable last for shaping a shoe upper. The last is made of a plastic material that can be transformed between a solid state and a plasticized state. The plastic material has fluidity and is thus easier to shape the shoe upper. The method of producing the last involves layering a pulp aggregate in a 3D printing process. The technical effects of this invention include improved recycling of shoes and reduced waste during shoe production.
权利要求：
1. A last for shaping a shoe upper, wherein the last comprises a hind portion and a remaining portion, at least the hind portion or at least the remaining portion being formed of an aggregate of a plurality of beads formed of a plastic material and each smaller than the last.
2. The last according to claim 1, wherein each of the plurality of beads has a spherical shape or a cylindrical shape.
3. The last according to claim 1, wherein each of the plurality of beads has a cylindrical shape, the last being formed of the plurality of beads arranged with their axial direction oriented in a vertical direction, or arranged with their axial direction oriented in a horizontal direction.
4. The last according to any one of claims 1 to 3, the last being meltable by adding water thereto or heating.
5. The last according to any one of claims 1 to 4, the last being formed so that each adjacent ones of the plurality of beads abutting each other adhere to each other.
6. The last according to any one of claims 1 to 5, wherein the hind portion is constituted by an integrated portion composed of the plastic material layered by 3D printing.
7. The last according to any one of claims 1 to 6, wherein the last is hollow inside thereof.
8. The last according to any one of claims 1 to 7, comprising: a body comprising the plastic material; and a protective part covering an outer periphery of the body.
9. The last according to claim 8, wherein the protective part is capable of being removed from the body.
10. A method for producing a last for shaping a shoe upper, the method comprising: forming the last by placing a plurality of beads in a mold to allow each adjacent beads abutting each other to adhere to each other by adding water thereto or heating.
11. A method for producing a shoe upper, the method comprising: a first shaping step of placing an unshaped upper on the last according to any one of claims 1 to 9, the unshaped upper composed of a fiber sheet comprising heat-shrinkable yarns; and a second shaping step of shaping the unshaped upper in conformity with the shape of the last by heating to obtain a shaped upper.