Footwear incorporating a tensile element with a deposition layer
An article of footwear may have an upper and a sole structure secured to the upper. The upper includes a base layer, a plurality of strand segments, and a deposition layer. The base layer has a first surface and an opposite second surface. The strand segments are located adjacent to the first surface and extend substantially parallel to the first surface for a distance of at least five centimeters. The deposition layer is deposited upon the first surface and the strand segments, and the deposition layer is joined with the first surface and the strand segments. The deposition layer is applied using a screen printing process. Different inks can be used during the screen printing process to form the deposition layer and an indicia layer.
1. A method of manufacturing an article of footwear, the method comprising:
laying a plurality of strand segments adjacent to a base layer, at least a portion of the strand segments extending substantially parallel to, and being unsecured to, the base layer for a distance of at least five centimeters;
depositing an at least partially liquid material onto the base layer and the strand segments, while the at least a portion of the strand segments is unsecured to the base layer, by screen printing to form a deposition layer, the strand segments being located between the base layer and the deposition layer, the deposition layer being bonded to, and securing, the base layer and the strand segments; and
incorporating the base layer, strand segments, and deposition layer into an upper of the article of footwear.
2. The method recited in claim 1 , wherein the at least partially liquid material builds up directly upon the base layer and the strand segments through screen printing to form the deposition layer such that the deposition layer is bonded and secured to both the base layer and the strand segments.
3. The method recited in claim 1 , wherein the step of depositing by screen printing further comprises screen printing multiple coats of the at least partially liquid material onto the base layer and the strand segments.
4. The method recited in claim 1 , wherein the step of depositing by screen printing further comprises:
screen printing onto the base layer using a first ink with a first color; and
screen printing onto the base layer using a second ink with a second color.
5. The method recited in claim 4 , wherein the first ink comprises the deposition layer; and
wherein the second ink comprises an indicia layer defining indicia on an exterior of the article of footwear.
6. The method of claim 1 further comprising orienting the base layer strand segments and deposition layer on the upper such that the strand segments extend from a lacing area of the upper toward a sole structure area of the upper.
7. The method of claim 1 wherein the depositing step includes applying powdered thermoplastic polymer particles to the base layer.
8. The method of claim 7 wherein the thermoplastic polymer particles are applied using a static charge.
9. The method of claim 1 wherein the deposition layer has a variable thickness.
10. The method of claim 9 wherein the deposition layer has a greater thickness in the areas of the strand segments.
11. The method of claim 1 further comprising, prior to the depositing step, locating the strand segments on the base layer by stitching first and second portions of the strand segments to the base layer, the at least a portion of the strand segments being intermediate the first and second portions of a respective strand.
12. The method of claim 1 wherein the liquid material is one of a polymer resin, melted polymer, adhesive or combination thereof.
13. The method of claim 1 wherein the depositing step includes applying the liquid material simultaneously with polymer filaments to the base layer.
14. The method of claim 13 wherein the polymer filaments are in a partially melted or softened state when applied to the base layer.
15. The method of claim 1 , wherein the deposition layer secures the plurality of strands against movement relative to the base layer.
16. A method of manufacturing an article of footwear, the method comprising:
laying a plurality of strand segments adjacent to a base layer, at least a portion of the strand segments extending substantially parallel to the base layer and being unsecured to the base layer:
depositing an at least partially liquid material including polymer filaments on to the base layer and the strand segments,
while the at least a portion of the strand segments is unsecured to the base layer, to form a deposition layer, the strand segments being located between, and secured to, the base layer and the deposition layer; and
incorporating the base layer, strand segments, and deposition layer into an upper of the article of footwear.
17. The method of claim 16 wherein the polymer filaments are in a partially melted or softened state when applied to the base layer.
18. The method of claim 17 wherein the liquid material is one of a polymer resin, melted polymer, adhesive or combination thereof.
19. A method of manufacturing an article of footwear, the method comprising:
laying a plurality of strand segments adjacent to a base layer, at least a portion of the strand segments extending substantially parallel to, and being unsecured to, the base layer for a distance of at least twelve millimeters;
depositing powdered thermoplastic particles onto the base layer while the at least a portion of the strand segments is unsecured to the base layer to form a deposition layer, the strand segments being located between the base layer and the deposition layer and secured by the deposition layer at least against orthogonal movement relative to the base layer; and
incorporating the base layer, strand segments, and deposition layer into an upper of the article of footwear.
20. The method of claim 19 further including orienting the base layer strand segments and deposition layer on the upper such that the strand segments extend from a lacing area of the upper toward a sole structure area of the upper.