Article with directional tensioning
An article of footwear with an upper including a ribbon structure is disclosed. The ribbon structure comprises ribbon sections running in at least two different directions. Ribbon sections are connected at nodes that may move substantially independently of other nodes. The ribbon structure can provide strength along one of the directions and may simultaneously remain slack in the other direction.
1. An article of footwear comprising:
a sole structure; and
an upper coupled to the sole structure, the upper defining a sole edge facing the sole structure, wherein the upper comprises:
a backing layer;
a border element extending along the sole edge of the upper, the border element comprising a plurality of threads stitched to the backing layer, each thread of the plurality of threads having a one-dimensional appearance; and
a ribbon structure extending through at least 50% of the upper, the ribbon structure comprising:
a first ribbon layer including a first flexible ribbon having a width that is greater than its thickness to give the first flexible ribbon a two-dimensional appearance;
a second ribbon layer including a second flexible ribbon having a width that is greater than its thickness to give the second flexible ribbon a two-dimensional appearance;
wherein the first flexible ribbon crosses the second flexible ribbon at a first crossing location and a second crossing location; and
wherein the first flexible ribbon is stitched to the second flexible ribbon at the first crossing location to form a first node, and wherein the first flexible ribbon is stitched to the second flexible ribbon at the second crossing location to form a second node.
2. The article of footwear of claim 1 , wherein:
the first node is adjacent to second node; and
the first flexible ribbon includes a ribbon portion extending from the first node to the second node, the ribbon portion defining a link configured to become taught under tension and fold under compression.
3. The article of footwear of claim 2 , wherein the first flexible ribbon of the first ribbon layer and the second flexible ribbon of the second ribbon layer each possesses a width between approximately 2 millimeters and approximately 6 millimeters.
4. The article of footwear of claim 3 , wherein the first flexible ribbon of the first ribbon layer comprises a woven textile possessing less than 20% stretch.
5. The article of footwear of claim 2 , wherein the first node is configured to move independently of the second node.
6. The article of footwear of claim 2 , wherein the link is configured to transfer forces between the first node and the second node.
7. The article of footwear of claim 1 , wherein the ribbon structure is comprised of a single, continuous ribbon.
8. The article of footwear of claim 2 , wherein:
the upper defines a first direction and a second direction;
the first direction is a longitudinal direction of the upper; and
the second direction is different than the first direction.
9. The article of footwear of claim 2 , wherein the ribbon structure further comprises a third ribbon layer including a third flexible ribbon having a width that is greater than its thickness to give the third ribbon a two-dimensional appearance; and
wherein the third flexible ribbon overlaps the first flexible ribbon, the second flexible ribbon, or both the first flexible ribbon and the second flexible ribbon.
10. The article of footwear of claim 9 , wherein the backing layer is a dissolvable backing layer.