Upper for an article of footwear
An upper for an article of footwear is disclosed. The upper can include a plurality of layers, such as an inner layer, a middle knit layer, and an outer layer. Each of the plurality of layers can provide different functionalities to the upper. The combination of the inner layer, middle knit layer, and the outer layer can be effective at transferring a load from the underfoot region to a position above the biteline.
1. An upper for an article of footwear, the upper having a toe end, a heel end, a medial side, a lateral side, and a bite line extending around the toe end, the medial side, the heel end, and the lateral side, the upper comprising:
an inner layer extending to at least the toe end, the heel end, the medial side, and the lateral side of the upper;
a middle knit layer extending to an underfoot portion of the upper, wherein the middle knit layer covers the inner layer at least at the medial side, the lateral side, the toe end, and the heel end of the upper, and wherein the middle knit layer extends, in the underfoot portion of the upper, between the lateral side and the medial side, and between the toe end and the heel end; and
an outer layer coupled with the middle knit layer, wherein the outer layer compositionally comprises at least one thermoplastic material, wherein the outer layer extends from a first position below the bite line at the underfoot portion of the upper to a second position above the bite line, and wherein the second position above the bite line is at least one selected from a midfoot region of the upper and the toe end of the upper.
2. The upper according to claim 1 , wherein the inner layer comprises an inner surface and an opposing outer surface, wherein the inner layer has a first thickness between the inner surface and the outer surface in the midfoot region and a second thickness between the inner surface and the outer surface in the heel end, and wherein the first thickness is less than the second thickness.
3. The upper according to claim 1 , wherein the inner layer comprises an inner surface and an opposing outer surface, and wherein the inner layer has a first aperture extending through the inner surface and the outer surface at one selected from the medial side and the lateral side.
4. The upper according to claim 3 , wherein the second position of the outer layer corresponds with the first aperture.
5. The upper according to claim 1 , wherein the middle knit layer is formed utilizing a circular knitting technique.
6. The upper according to claim 1 , wherein the middle knit layer is formed utilizing a flat knitting technique.
7. The upper according to claim 1 , wherein the outer layer extends from the medial side to the lateral side across the toe end of the upper.
8. The upper according to claim 1 , wherein the outer layer of the upper includes a continuous thermoplastic layer.
9. The upper according to claim 1 , wherein the outer layer compositionally comprises a first thermoplastic material and a second thermoplastic material, the second thermoplastic material being different from the first thermoplastic material.