Smooth shoe uppers and methods for producing them
View Patent ↗Shoe uppers having smooth seams and methods for producing them are disclosed. In one embodiment the upper uses thermoplastic seam tape which forms bonds between contiguous upper sections after being subjected to heat and/or pressure. In another embodiment, different parts of the shoe can be joined using hidden seams. Close seams can also be covered with a transfer material adapted to give the interior and/or exterior of the upper a smooth surface. In yet another embodiment, a method is disclosed which allows three-dimensional upper sections to be bonded on a last using thermoplastic seam tape.
1. An upper for an article of footwear comprising:
an interior portion of the upper having an interior side, wherein the interior portion further comprises a forward interior panel and an interior panel rearwardly adjacent the forward interior panel, wherein the forward interior panel and the adjacent interior panel are joined at least partially to one another by at least one stitchless seam, and wherein an edge portion of the forward interior panel overlaps an edge portion of the adjacent interior panel along the stitchless seam; and
a thermoplastic seam tape disposed on the interior side of the interior portion and substantially covering the stitchless seam,
wherein overlapping area of the forward interior panel and the adjacent interior panel is less than non-overlapping area of the forward interior panel and the adjacent interior panel.
2. The upper according to claim 1 , wherein the forward interior panel defines at least a portion of a toe area of the upper, and wherein the adjacent interior panel defines a midfoot area of the upper.
3. The upper according to claim 1 ,wherein the at least one stitchless seam comprises a curved seam extending between the forward interior panel and the adjacent interior panel from a sole area of the upper to a tongue opening of the upper.
4. The upper according to claim 1 , wherein the adjacent interior panel is thicker than the forward interior panel.
5. The upper according to claim 1 , wherein the thermoplastic tape comprises a material selected from the group consisting of polyurethane, polyamide, polyester, nylon, polyolefin, vinyl, polypropylene, thermoplastic urethane, tricot, acrylic, and PVC.
6. The upper according to claim 1 , wherein the interior portion comprises a compliant material.
7. The upper according to claim 1 , further comprising an exterior portion having an exterior upper edge, and wherein the interior portion has an interior upper edge and wherein the exterior portion is attached to the interior portion at least partially by stitching at a hidden seam located along the juncture of the interior upper edge and the exterior upper edge.
8. The upper according to claim 1 , further comprising a lower edge defining a lower perimeter of the upper, wherein the lower edge is configured to be coupled to a sole.
9. The upper according to claim 1 , wherein the forward interior panel and the adjacent interior panel have different thicknesses.
10. The upper according to claim 1 , wherein the forward interior panel and the adjacent interior panel comprise different materials.
11. The upper according to claim 1 , wherein the upper is coupled to a sole at a lower portion of the upper.
12. The upper according to claim 1 , wherein the upper is coupled to a sole at a lower edge of the upper.
13. An article of footwear, comprising:
the upper according to claim 1 , and
a sole coupled to the upper.
14. The article of footwear according to claim 13 , wherein the sole comprises an outsole.
15. The article of footwear according to claim 13 , wherein the sole comprises a midsole and an outsole.