A last for forming an upper of an article of footwear includes an exterior surface, where the exterior surface includes a plurality of three dimensional structural surface components disposed over at least 50% of the exterior surface of the last.

A last for forming an upper of an article of footwear includes an exterior surface, where the exterior surface includes a plurality of three dimensional structural surface components disposed over at least 50% of the exterior surface of the last.

There is provided a method for knitting a shoe upper that can allow the reinforcement degree of the shoe upper to be changed with a small number of yarn feeders. A method for knitting a shoe upper (1) including an instep cover section (3) that covers a portion on an instep side of a wearer and a sole cover section (2) that covers a sole of the wearer is provided. The instep cover section (3) and the sole cover section (2) are three-dimensionally knitted in a seamless manner; and in the knitting process, at least one base section (10) configuring a part of the shoe upper (1) is knitted using a base knitting yarn containing a non-thermal adhesive yarn and a thermal adhesive yarn, and a reinforcement knitting yarn containing a thermal adhesive yarn is interwoven in the base section (10) to reinforce the base section (10). In this case, the number of knitting with the reinforcement knitting yarn with respect to the base section (10) is changed.

There is provided a method for knitting a shoe upper that can allow the reinforcement degree of the shoe upper to be changed with a small number of yarn feeders. A method for knitting a shoe upper (1) including an instep cover section (3) that covers a portion on an instep side of a wearer and a sole cover section (2) that covers a sole of the wearer is provided. The instep cover section (3) and the sole cover section (2) are three-dimensionally knitted in a seamless manner; and in the knitting process, at least one base section (10) configuring a part of the shoe upper (1) is knitted using a base knitting yarn containing a non-thermal adhesive yarn and a thermal adhesive yarn, and a reinforcement knitting yarn containing a thermal adhesive yarn is interwoven in the base section (10) to reinforce the base section (10). In this case, the number of knitting with the reinforcement knitting yarn with respect to the base section (10) is changed.

A method of manufacturing a shoe upper according to the present invention includes: three-dimensionally forming an upper member; pre-heating the upper member such that a portion-to-be-reinforced of the three-dimensionally formed upper member is heated to a temperature equal to or higher than a melting point of thermoplastic resin powder; adhering the thermoplastic resin powder to the upper member so as to at least cover the portion-to-be-reinforced of the pre-heated upper member; further heating the upper member to which the thermoplastic resin powder is adhered and melting the thermoplastic resin powder adhered to the upper member; and hardening the melted thermoplastic resin powder to firmly adhere the reinforcing portion to the upper member.

A method of manufacturing a shoe upper according to the present invention includes: three-dimensionally forming an upper member; pre-heating the upper member such that a portion-to-be-reinforced of the three-dimensionally formed upper member is heated to a temperature equal to or higher than a melting point of thermoplastic resin powder; adhering the thermoplastic resin powder to the upper member so as to at least cover the portion-to-be-reinforced of the pre-heated upper member; further heating the upper member to which the thermoplastic resin powder is adhered and melting the thermoplastic resin powder adhered to the upper member; and hardening the melted thermoplastic resin powder to firmly adhere the reinforcing portion to the upper member.

A method of forming an arch member comprising an arch member body and an arch member coupling integral with the body, comprising: providing a substrate comprising a resilient material; and removing a portion of the substrate to form the arch member. The arch member body including a cross-sectional geometry that varies along a length of the body. Also a method of designing an orthodontic appliance comprising: providing a proposed specification of the orthodontic appliance, wherein the orthodontic appliance comprises an arch member comprising an arch member body and an arch member coupling integral with the body, and a set of anchors, providing a first digital image representing a first dental arrangement associated with the orthodontic appliance; deriving a target digital image representing a target dental arrangement; revising the proposed specification of the orthodontic appliance based in part on the target digital image; and forming the orthodontic appliance based on the revised proposed specification.

A method of forming an arch member comprising an arch member body and an arch member coupling integral with the body, comprising: providing a substrate comprising a resilient material; and removing a portion of the substrate to form the arch member. The arch member body including a cross-sectional geometry that varies along a length of the body. Also a method of designing an orthodontic appliance comprising: providing a proposed specification of the orthodontic appliance, wherein the orthodontic appliance comprises an arch member comprising an arch member body and an arch member coupling integral with the body, and a set of anchors, providing a first digital image representing a first dental arrangement associated with the orthodontic appliance; deriving a target digital image representing a target dental arrangement; revising the proposed specification of the orthodontic appliance based in part on the target digital image; and forming the orthodontic appliance based on the revised proposed specification.

A last for forming an upper of an article of footwear includes a first portion including a lateral side and a medial side that opposes the lateral side, and a second portion connected with and extending upward and transversely outward in an angled manner away from the first portion such that a terminal end of the second portion is distanced from the first portion. An exterior surface of the last can include a plurality of three dimensional structural surface components disposed over at least 50% of the exterior surface of the last.

A last for forming an upper of an article of footwear includes a first portion including a lateral side and a medial side that opposes the lateral side, and a second portion connected with and extending upward and transversely outward in an angled manner away from the first portion such that a terminal end of the second portion is distanced from the first portion. An exterior surface of the last can include a plurality of three dimensional structural surface components disposed over at least 50% of the exterior surface of the last.