Articles and methods of manufacture of articles
Various articles, such as footwear, apparel, athletic equipment, watchbands, and the like, and methods of forming those articles are presented. The articles are generally formed, in whole or in part, using rapid manufacturing techniques, such as laser sintering, stereolithography, solid deposition modeling, and the like. The use of rapid manufacturing allows for relatively economical and time efficient manufacture of customized articles. The articles may include one or more reinforcements configured to provide added durability to various regions of the articles. In addition, the articles may be formed from two or more materials in a single rapid manufacturing process. The rapid manufacturing additive fabrication technique may also include using of varying intensities of the laser to fuse material to form the articles.
1. A method of manufacturing an article of footwear, comprising:
fuse bonding successive layers of a first thermoplastic elastomer material together in a shape so as to form a first portion of an upper from the first thermoplastic elastomer material using a rapid manufacturing additive fabrication technique;
fuse bonding successive layers of a second thermoplastic elastomer material together in a shape so as to form a second portion of the upper from the second thermoplastic elastomer material using the rapid manufacturing additive fabrication technique, the second thermoplastic elastomer material being different from the first thermoplastic elastomer material;
forming a sole structure including a midsole and an outsole;
connecting the sole structure to the upper, wherein the upper includes the first portion of the upper and the second portion of the upper; and
applying a colored resin to the first portion of the upper, wherein the step of applying the colored resin alters mechanical properties of the first portion of the upper.
2. The method of claim 1 , wherein the fuse bonding step for forming the first portion of the upper and the fuse bonding step for forming the second portion of the upper are performed in a single process.
3. The method of claim 1 , wherein the rapid manufacturing additive fabrication technique is laser sintering.
4. The method of claim 1 , wherein the rapid manufacturing additive fabrication technique is stereolithography.
5. The method of claim 1 , wherein the rapid manufacturing additive fabrication technique is solid deposition modeling.
6. The method claim 1 , wherein the first portion of the upper is a toe region and the second portion of the upper is a lateral side and a medial side of the upper.
7. The method of claim 6 , wherein the toe region has greater flexibility than the lateral side and the medial side of the upper.
8. A method of manufacturing an article of footwear, comprising:
fuse bonding successive layers of a thermoplastic elastomer material together using a laser at a first laser intensity in a rapid manufacturing additive fabrication technique to form a first portion of an upper;
fuse bonding successive layers of the thermoplastic elastomer material together using the laser at a second laser intensity in the rapid manufacturing additive fabrication technique to form a second portion of the upper, wherein the second laser intensity is different from the first laser intensity;
forming a sole structure including a midsole and an outsole; and
connecting the sole structure to the upper, wherein the upper includes the first portion of the upper and the second portion of the upper.
9. The method of claim 8 , wherein the fuse bonding step for forming the first portion of the upper and the fuse bonding step for forming the second portion of the upper are performed in a single process.
10. The method of claim 8 , wherein the sole structure is formed using a non-rapid manufacturing additive fabrication technique.
11. The method of claim 8 , wherein the fuse bonding step for forming the first portion of the upper includes forming the first portion of the upper with a first set of mechanical properties.
12. The method of claim 11 , wherein the fuse bonding step for forming the second portion of the upper includes forming the second portion of the upper with a second set of mechanical properties, the second set of mechanical properties being different from the first set of mechanical properties.
13. The method of claim 8 , wherein the rapid manufacturing additive fabrication technique is a technique selected from the group consisting of: laser sintering, stereolithography, and solid deposition modeling.
14. The method of claim 8 , wherein the rapid manufacturing additive fabrication technique is laser sintering.
15. The method of claim 8 , wherein the rapid manufacturing additive fabrication technique is stereolithography.
16. The method claim 8 , wherein the first portion of the upper is a toe region and the second portion of the upper is a lateral side and a medial side of the upper.
17. The method of claim 16 , wherein the toe region has greater flexibility than the lateral side and the medial side of the upper.
18. The method of claim 8 , wherein the first portion has greater flexibility than the second portion.
19. The method of claim 8 , wherein the first laser intensity is lower than the second laser intensity, and wherein the first portion has greater flexibility than the second portion.
20. The method of claim 8 , wherein the first laser intensity is lower than the second laser intensity, and wherein the second portion forms an eyelet region of the article of footwear.